MDSSL HUBO 7500DWT Chemical tanker Specification

Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 1 of 118
TECHNICAL SPECIFICATION
For
7500 DWT OIL PRODUCT/CHEMICAL TANKER
BUYER: Unifleet B.V. (or a company nominated Unifleet B.V.)
SELLER: Taixing Guanghua Shipbuilding Co., Ltd.

Table of Contents
100 General Guidance and Administration...................................................................................8
101 Intent, Scope and General Guidance......................................................................................8
102 General Description .............................................................................................................10
103 Class Notation and Flag .......................................................................................................12
104 Regulations ..........................................................................................................................12
105 Certificates ...........................................................................................................................13
106 Material................................................................................................................................14
107 Workmanship.......................................................................................................................15
108 Spare Parts, tools and Accessories.......................................................................................15
109 Unit of Measure ...................................................................................................................15
110 Operating Temperature ........................................................................................................15
111 Definitions Used In This Specification ................................................................................16
112 Language..............................................................................................................................16
113 Buyers Supplied Items .........................................................................................................16
114 Hull Form & Model Test .....................................................................................................19
115 Trim And Stability ...............................................................................................................19
116 Determination Of Deadweight .............................................................................................21
117 Building Process ..................................................................................................................22
118 Dry Docking.........................................................................................................................22
119 Inspection Tests and Trials...................................................................................................22
1191 General ........................................................................................................................22
1192 Progress .......................................................................................................................23
1193 Tests and Inspection ....................................................................................................24
1194 Mooring Trial ..............................................................................................................24
1195 Sea Trial.......................................................................................................................25
120 Plans For Approval ..............................................................................................................26
121 Finished Plan And Instruction Books...................................................................................27
122 Name Plates And Identifications..........................................................................................27
123 Delivery ...............................................................................................................................28
124 Exemption............................................................................................................................28
200 General Particulars...............................................................................................................28
201 Principle Dimensions ...........................................................................................................28
202 Speed and Endurance...........................................................................................................28
203 Installed Power.....................................................................................................................28
204 Deadweight and Capacity ....................................................................................................29
205 Cargo List.............................................................................................................................30
206 Bow Thruster .......................................................................................................................30

207 Deck Heights, Sheer And Camber .......................................................................................30
2071 Height Between Decks At Centerline..........................................................................30
2072 Shear On Main Deck............................................................................................................30
2073 Camber of Decks..................................................................................................................30
208 Complement.........................................................................................................................31
300 Hull Structure.......................................................................................................................32
301 General.................................................................................................................................32
302 Material and Welding...........................................................................................................33
303 Main Hull.............................................................................................................................33
304 Stem and Stern .....................................................................................................................34
305 Keel Plate.............................................................................................................................35
306 Shell Plating.........................................................................................................................35
307 Bottom Structrue..................................................................................................................35
308 Side Shell Structure..............................................................................................................35
309 Decks ...................................................................................................................................35
310 Pillars ...................................................................................................................................36
311 Bulkhead ..............................................................................................................................36
312 Peak Tanks...........................................................................................................................36
313 Superstructure and Deck House...........................................................................................36
314 Rudder..................................................................................................................................37
315 Miscellaneous ......................................................................................................................38
3151 Foundations .................................................................................................................38
3152 Bulwark and Hand Rails..............................................................................................38
3153 Catwalk and Sidewalk .................................................................................................38
3154 Bilge Keel....................................................................................................................38
3155 Chain Locker ...............................................................................................................39
3156 Hawse Pipes.................................................................................................................39
3157 Sea Chests and Box Cooler..........................................................................................39
3158 Bottom Plug.................................................................................................................40
3159 Funnel..........................................................................................................................40
400 Paint and Corrosion Control.......................................................................................41
401 General.................................................................................................................................41
402 Surface Preparation..............................................................................................................42
4021 Primary Preparation.....................................................................................................42
4022 Galvanizing..................................................................................................................42
4023 Secondary Preparation.................................................................................................42
403 Shop Primer .........................................................................................................................43
404 Paint Works..........................................................................................................................43
405 Film Thickness.....................................................................................................................43
406 Measuring ............................................................................................................................43

407 Inspection.............................................................................................................................43
408 General Cautions..................................................................................................................44
409 Paint Schedule......................................................................................................................44
4091 Ballast Tanks Coating..................................................................................................44
4092 Cargo Oil Tanks Coating.............................................................................................44
4093 Decks Superstructures and Other Places Coating........................................................44
4094 Painting Scheme ..........................................................................................................44
410 Cathodic protection..............................................................................................................45
411 Antifouling System for Box Coolers....................................................................................45
500 Accommodation...................................................................................................................46
500 Accommodation...................................................................................................................46
501 General.................................................................................................................................46
502 Deck Covering .....................................................................................................................46
503 Insulation and Fire Protection ..............................................................................................46
504 Cabin Furnishing and Fittings..............................................................................................48
5041 Captain and Chief Engineer Class ...............................................................................48
5042 One Man Cabins ..........................................................................................................48
5043 Two Men Cabins ..........................................................Error! Bookmark not defined.
5044 Wash Place Fittings .....................................................................................................49
5045 Laundry Equipment .....................................................................................................49
5046 Galley ..........................................................................................................................49
5047 Wheel House................................................................................................................50
5048 Interior Doors ..............................................................................................................51
5049 Engine Control Room..................................................................................................51
50410 Cargo Control Room and Ships office to be combined Office ....................................52
50411 Crew and Officer Mess Rooms....................................................................................52
50412 Dry Provision Store .....................................................................................................52
50413 Refrigerated Provision Store........................................................................................53
50414 Forward Stores.............................................................................................................53
50415 Steering Gear Compartment ........................................................................................53
50416 Radio Space .................................................................................................................53
50417 Emergency Generator Room .......................................................................................54
50418 Workshop.....................................................................................................................54
50419 Changing Room...........................................................................................................54
50420 Paint Store....................................................................................................................54
50421 Deck/Engine Store.......................................................................................................54
600 Deck Machinery and Outfitting ...........................................................................................54
601 General.................................................................................................................................54
602 Anchor Windlasses ..............................................................................................................55
603 Steering Gear .......................................................................................................................56

604 Stern Mooring Winch........................................................................................................56
605 Provision Handling Davit.....................................................................................................57
606 Hose Handling Crane...........................................................................................................57
607 Mooring Fitting....................................................................................................................57
608 Manifold...............................................................................................................................57
609 Oil Spill Drain Tank.............................................................................................................58
610 Mooring Equipment .............................................................................................................59
611 Ladders and Steps ................................................................................................................59
6111 Accommodation Ladders.............................................................................................59
6112 Steel Ladder and Steps.................................................................................................59
612 Access Hatch and Manhole..................................................................................................60
6121 Access Hatch and Manhole for Cargo Oil Tanks ........................................................60
6122 Access Manhole for Water Ballast Tank .....................................................................60
6123 Tank Cleaning Hatch ...................................................................................................60
6124 Sample Hatches ...........................................................................................................61
6124 Small Hatches..............................................................................................................61
6125 Manholes .....................................................................................................................61
613 Life Saving Appliances........................................................................................................62
614 Fire Fighting System............................................................................................................62
615 Fire Hydrant System ............................................................................................................63
616 Foam Fire Extinguish System ..............................................................................................63
617 CO2 Smothering System ......................................................................................................64
618 Emergency Fire Pump..........................................................................................................64
619 Personal Protection ..............................................................................................................64
620. Fire Fighting System .....................................................................................................................65
700 Equipment for Cargo............................................................................................................66
701 General.................................................................................................................................66
702 Loading and Discharge System for Liquid Cargo................................................................67
7021 Cargo & Stripping/Slop Pumps...................................................................................................67
703 Cargo Heating System .........................................................................................................69
704 Cargo Tank Vent/Gas Free System......................................................................................70
7041 Cargo Tank Ventilation ...............................................................................................70
7042 Gas Freeing System .....................................................................................................71
705. Vapour Return System ..................................................................................................................71
706 Tank Cleaning System .........................................................................................................71
707 Auxiliary System & Equipment for Cargo...........................................................................74
708 Cargo Control Room............................................................................................................74
709 Oil Discharge Monitoring and Control ................................................................................75
800 Hull Piping System ..............................................................................................................76
801 Ballast System......................................................................................................................76

802 Bilge Piping .........................................................................................................................77
803 Drainage System ..................................................................................................................78
804 Sounding System .................................................................................................................78
805 Air-conditioning System......................................................................................................79
806 Mechanical Ventilation........................................................................................................80
807 Natural Ventilation...............................................................................................................81
900 Machinery Part.....................................................................................................................81
901 General.................................................................................................................................81
902 Principal Particulars of Machinery.......................................................................................83
9021 Main Engine ................................................................................................................83
9022 Flexible couplings........................................................................................................84
9023 Reduction gearbox.......................................................................................................84
9024 Shaft and Propeller ......................................................................................................84
9025 Boiler Plant..................................................................................................................85
9026 Electric Generating Plant.............................................................................................86
9027 Compressed Air Plant:.................................................................................................88
9028 Pumps ..........................................................................................................................89
9029 Oil purifier...................................................................................................................91
90210 Fresh Water Generator:................................................................................................92
90211 Heat Exchangers/Box coolers......................................................................................92
90212 Engine room ventilating fans.......................................................................................93
90213 Incinerator....................................................................................................................93
90214 Sewage Treatment Plant ..............................................................................................94
903 Piping System in Engine Room ...........................................................................................94
9031 Material for Pipes and Valves ...................................................................................................94
9032 Fuel oil system.............................................................................................................96
9033 Lub. oil system ............................................................................................................98
9034 Cooling Water System...............................................................................................100
9035 Compressed air system ..............................................................................................101
9036 Exhaust Gas System ..................................................................................................102
904 Workshop Machinery in Engine Room..............................................................................102
905 Miscellaneous Equipment in Engine Room.......................................................................103
906 Automatic Control and Monitoring Instrumentation..........................................................103
9061 General ......................................................................................................................103
9062 Manoeuvring control system .....................................................................................104
9063 Alarm / Monitoring system........................................................................................105
9064 Boiler automatic system ............................................................................................106
9065 Generator control system...........................................................................................106
9066 Monitoring System for Liquid Tanks ........................................................................106
1000 Electric System..........................................................................................................................108

1001 General...............................................................................................................................108
1002 Power System.....................................................................................................................108
1003 Adoption of Cable..............................................................................................................108
1004 Primary Source...................................................................................................................110
1005 Main Switchboard..............................................................................................................111
1006 Emergency Switchboard ....................................................................................................112
1007 Shore Connection Box .......................................................................................................112
1008 Secondary Source...............................................................................................................112
1009 Distribution System............................................................................................................112
1010 Power System.....................................................................................................................113
1011 Lighting System.................................................................................................................113
1012 Navigation Lights and Signal Lights..................................................................................115
1013 Internal Communication, Alarm & Measuring System......................................................116
1014 Electric Nautical Equipment ..............................................................................................117
1015 Radio Equipment ...............................................................................................................118

100 General Guidance and Administration
101 Intent, Scope and General Guidance
The vessel is to be designed according to the design as a twin engines, twin CPP propeller and twin rudders. The aft
ship will be modified to achieve more speed, the draft of the vessel must be according to the maximum
scantling/minimum freeboard and corrugated bulkhead in cargo tanks must be about 700 mm width. Vessel to be used
for worldwide services. Equipped with an appropriate propulsion system existing in twin medium speed engines driving
twin CPP propellers through two reduction gear boxes with clutches.
Following contract plans shall accompany and as part of this Building Specification;
• General Arrangement Plan (Subject to the change as per designing)
• Maker List
•
This specification and accompanied drawings shall form an integral part of the contract.
The vessel will be designed, constructed, equipped, tested and delivered to the Buyers by the Builder in
accordance with the Building specification and Working Plans.
Details in design, construction, fabrication, installation, inspection, tests, workmanship etc. shall not be
covered by these Specifications, shall be in accordance with Builder’s, Subcontractor’s and Manufacturer’s
normal practices based on the appropriate standards for this kind of vessel being adopted at the time of Vessel’s
construction.
Materials, apparatus and equipment intend to use in this tanker shall be in accordance with the International
Industrial Standards, equivalent to ISO, or equivalent to Chinese national standard.
Any item or construction necessary to complete the vessel safe and workable for its intended purpose shall be
supplied and installed by the Builder whether mentioned in the Specification or not as a mutual agreement
between the Builder and the Buyers.
It is to be understood that anything not mentioned in these Specifications but required by the Classification
Society or Regulatory Bodies listed herein, shall be supplied and/or equipped by the Builder.
Any requirement of the Buyers, which is in excess of the requirements of the Rules and Regulations as
specified in 104 and 105 and/or the content of this specifications shall be subject to the adjustment to the
contract price, deadweight, etc, which may be effected, in notified in writing by the Builder and accepted in
writing by the Buyers.
If the same item is repeated twice or more in these Specifications, it is to be understood that these items shall
be supplied and/or equipped once only.
If any inconsistency is found between the Contract, Specification and/or accompanied plans, the former one
shall prevail and govern unless otherwise agreed.

If any inconsistency is found between the Hull, Machinery and Electric Specifications, the description of the
Specifications which governs the installation or equipment shall prevail.
Any amendments or changes in Rules and Regulations as described in 104 and 105 issued and coming into
effect after signing the Contract, is to be treated as a modification to the Contract. The price of changing
Contract shall be subject to separate negotiations between the Buyers and the Builder.
Any amendment or changes in this Specification and/or Plans shall be treated in a similar way as set out above.
If the Buyers will desire to apply the said amendment and/or changes to the vessel, the Builder shall submit in
a written document, the affects on the ship’s price, deadweight, delivery date or any other item which may
affect the Contract.
These amendments or changes shall come into effect after the agreement is reached between the Buyers and
the Builder, and a written consent has to be signed between both parties.
Whenever the term “or equal” is used after a brand or a type or a type of machinery equipment or component,
the term “or equal” shall mean that any substitute shall be of equivalent standard and quality.
Where ever in the Specification the term “or” , “ if necessary”, when considered” and other similar expressions
may be used, the final choice in all important matters are to be made by mutual agreement between Builder
and Buyers.
Details in design, construction, installation, inspection, test, workmanship etc., not covered by the
Specification, shall be in accordance with good international shipbuilding practices based on the appropriate
standards for this kind of Vessel being adopted at the time of Vessel’s construction, being generally used by
international shipyards and agreed by the Buyers.
The Builder shall furnish all items required for the completion of the vessel in accordance with this
specification except items specifically stated herein as to be furnished and supplied by the Buyers.
The description in 100 General Guidance and Administration shall be applied to all parts of the Specification,
whereas in the parts the description to be applied to the respective parts, if not stated otherwise.
The design and layout of machinery, electrical and automation system, ventilation and air condition to be
suitable for following environmental condition:
Ambient air temperature : 40 o
C / - 20 c
Air temperature in engine room: 40 o
C
Sea water temperature: 32 o
C – 2c
Rel, humidity max / non condensing: 50 o
C
Sand and dust laden wind at times
Max, noise level in accordance with the SOLAS and IMO rule and Class COMF rules but not exceed the
following:
Wheelhouse: 65 db

Wheelhouse wings: 60 db
Office/Control rooms 65 db
Mess rooms: 65 db
Cabins: 60 db.
Engine room: 110 db
Galley: 75 db.
All rotating machinery should be properly and adequately provided with safety protection guards.
When sub-contractors are employed by shipyard to carry out the construction works for the contracted vessel,
sub-contractor qualifications and experiences should be sent to Buyers for approval. When sub-contractor(s)
found continuously carrying out works not meeting the standards and requirements of these specifications,
Sellers should replace the sub-contractor(s) immediately upon receiving written request from Buyers with
supporting facts.
All shipboard equipment delivered to shipyard should be properly stored and protected either in warehouses or when
installed onboard. Particular protection to be provided against blasting grits and rain water.
All shipboard equipment as per approved maker list to have BV certificates and/or BV type approval certificates and
provide to buyer prior to installation onboard.
All steel plates should have BV approved Mill Certificates and provide to buyer prior to be use for construction.
102 General Description
This ship is an Oil Product / Chemical Tanker designed primarily to load and carry petroleum product oil and
IMO type II chemicals. The deadweight of the vessel is approx. 7500 metric tons at design draft. All cargo
tanks shall be able to fully load cargoes with specific gravity up to 1.52 mt/m3
. The cargo tanks shall be
suitable for cargo with NO flash point limitation.
The vessel shall be designed to meet the requirements of providing world wide trading service to transport
Product Oil/Chemicals. The vessel shall be designed as modern looking chemical tanker with a totally enclosed
bridge and separate funnel, a free fall boat on stern and a streamlined bulbous bow construction. The design
shall be approved by the Buyers prior to the construction.
There are seven pairs of cargo oil tanks with two deck cargo/slop tanks, they are of mild steel with internal
surround coat. Seven pairs of ballast tanks are arranged at the wing tanks and double bottom tanks within the
cargo oil space. Fore peak shall be used as water ballast tanks as well.
Sixteen sets of deep well type pumps driven by separate electric motors controlled by frequency converters and
controlled from the cargo control room. are provided to handle the cargo loading/unloading. The rpm of the
cargo pumps drive elec. motors shall be adjustable between the allowable minimum and maximum rpm. The
cargo loading/unloading piping system is able to load and discharge sixteen (16) different grades of cargo oil
or chemicals simultaneously without contamination. The cargo lines for all cargo tanks shall be provided.

Interconnections of discharge lines with proper isolation valves for stern discharge is allowed. (Buyers to
provide piping diagram as reference)
The cargo details shall refer to the agreed Cargo Diagram
One pair of deep fuel oil tank in double bottom and double side shall be arranged in engine room forward. The
engine room to be separated from cargo spaces by means of ballast pump room. Seperation of fuel oil and
lubricating oil from direct contact with the sea as required by CLEAN SEA notation to be allowed.
Propulsion is provided by means of two marine diesel medium speed engines located in the engine room after.
Two controlled pitch propellers are installed and are driven by reduction gearboxes and flexible couplings.
Maneuvering is accomplished via two balanced flap type or fish tail type rudders (Barkemeyer) and one
electrically driven bow thruster, meeting ICE Class 1A requirement..
Electrical power may be generated by shaft generator during voyage, how ever the speed of the vessel will be
affected accordantly if shaft generator is used. One generator when idle in port. For discharging with four
cargo oil pumps two generators should be used. Emergency generator can be used parallel with three main
generators and the two shaft generators with auto-load sharing.
Accommodation for 16 crews is provided at the after of the ship. In order to reduce the vibration and noise,
crew's accommodations, bridge, etc. shall be located at the forepart of deck house, funnel shall be arranged on
accommodation deck.
One light mast shall be arranged at the end of forecastle, one signal mast (radar mast) shall be arranged at the
top of the bridge. And also one light post shall be provided near the midship manifold, port and starboard
respectively.
Markings:
All to be made of eight-mm steel plate and welded to the hull if not otherwise specified. Plimsoll marks
amidships, draft marks, fore, aft, amidships, on the rudder sides, aft and transom. Bow thruster’s mark. All
tanks length and boundaries to be marked by welding beads on bottom and just above ballast water line as well
as the tank name. All transfer bulkheads to be marked. Frame numbers for every 10th
frames to be marked on
bilge keel and just above ballast water line. Cargo compartments to be marked “CC” letters welded on access
to the trunks. All valves are to be identified. Air caps, filling and sounding pipes are to be marked tank name
and content non-corrosive material or by welding beads.
Ship name and Port of registry should be marked by spot welding and painting on bow sides and the stern.
IMO No. to be marked the same on the stern and on the engine room bulkhead.
Manhole covers to be clearly identified welded on tanks name and number. Marks to be made of 5-mm steel
plates and welded near the manhole and top of the covers. All cranes lifting rails, lugs etc. to be marked welded
on S.W.L. marks. Name sign and/or rank plates on all doors. Water line to be marked welding beads. On
superstructure and forecastle bulkheads safety warning (like NO SMOKING), welding bead marked and
painted. Marking of all vent openings for the area they serve and open-close instructions.

Ship draft marks to be verified by laser or similar means prior to vessel undock or launching in presence of
Class surveyor and Buyers representative. Any difference should be rectified immediately.
103 Class Notation and Flag
The vessel including its hull, machinery and equipment shall be build to the class of Bureau Veritas
(BV).(hereinafter called the “Classification Society” Or “Class”) or equivalent classification society (will be
decided by the Buyers) with following notation;
I HULL
OIL TANKER/CHEMICAL TANKER TYPE IMO II ESP,
NO FLASH POINT LIMITATION,
MACH
UNRESTRICTED NAVIGATION
AUT – UMS
MON – SHAFT
ICE CLASS 1A
AVM/APS
SHAFT GENERATOR- PTO
CLEAN SHIP-SUPER
Some class notation has been changed recently. The new class notations must be followed
The vessel will be registered under the Gibraltar Flag.
The Buyers may assist to provide specific regulation of the flag state only when flag will be Gibraltar.
104 Regulations
The vessel must comply with the flag authorities and following international rules and regulations. All rules
and regulations shall be updated with latest amendments if any.
• Rules and Regulations of the Classification Society 2003 and it's Amendments (hereinafter called as
“CLASS Rules”)
• National Maritime regulation of the Country of Registry
• International Convention for the Safety of Life at Sea, 1974 (SOLAS), including first Amendments
1978, second set of Amendments1981, 1983, 1988(GMDSS), 1989, 1990, 1991, 1992, 1994, 1996,
1997, 1998, and 2000.
• International Convention for the Prevention of Pollution from Ships, 1973 (MARPOL 1973) and
Amendments of 1984, 1985, 1987, 1989, 1990, 1991, 1992, 1994, 1997 and 1998 including Reg. 13F
and Annex I, II, IV, V and VI for Nox.
• Code for the construction and equipment for ships carrying dangerous chemicals in bulk(IBC code).
• Convention on the International Regulations for Preventing Collisions at Sea, 1972(COLREG 1972)
and Amendments of 1981, 1987 and 1989.
• International Convention on Load Lines 1966 and Amendments of 1979.
• International Conversion on Tonnage Measurement of ships, 1969.
• International Electro-technical Commission (IEC) Regulation for Electrical Installation on Ships.

• IMO Resolution A-468 (XII), Code on Noise levels on board ships
• ILO Concerning Crew Accommodation on Board (No.92 & No.133)
• ISO No.6954 Guidelines for the Overall Evaluation of Vibration in Merchant Ships, 1979 and its
Amendments of 1984.
• OCIMF – Standards for Tanker Manifolds and Associated Equipment 1998 for reference only
• IMO Standards & instructions concerning ventilation cleaning and gas-freeing of oil tanks
• Exxon Minimum Safety Requirements, 2000 (for reference only)
• IMO draft guidelines on Navigation Bridge Visibility
• IMO Resolution A.751 (XVII) Interim Standards for Ship Maneuverability
• Suez Canal Navigation Rules Tonnage measurements
• Panama Canal Navigation Regulation (for reference only)
• Kiel Canal Regulations
• Suez Canal Navigation Rules Tonnage measurements
105 Certificates
The builder shall obtain following certificates and deliver to Buyers at the time of the ship’s delivery unless
otherwise mentioned. Each certificate shall be delivered as triplicates, one original and two copies.
No. Name of Certificate Issued by
1 Classification Certificate for Class Notation Class
2 International Load Line Certificate Class
3 Safety Construction Certificate Class
4 Safety Equipment Certificate Class
5 Safety Radiotelephone Certificate, incl. GMDSS Class
6 Safety Cargo Gear Certificate Class
7 Classification Certificates for Anchor, Chains and Hawsers, Machinery
and Equipment.
Class
8 Certificate for Life Boats & Life Saving Equipment Class
9 Certificate for Navigation Light & Special Signal Light Class
10 Certificate for Crews’Accommodation Class
11 Certificate for Deadweight Class
12 International Tonnage Certificate, including the SBT calculation. Class
13 International Oil Pollution Prevention Certificate Class
14 Certificate for Compass Adjustment & Direction Finder Government
15 Cargo Tank Calibration Tables the parties will be mutual agreed between
buyer and builder
16 Deratting Exemption Certificate Chinese
Government
17 Certificate for Magnetic Compass Builder
18 Builder’s Certificate Builder
19 P & A Manual Buyer’s supply and
Builder updates
and send for Class
approval.

No. Name of Certificate Issued by
SMPPEP Manual. Buyer’s supply and
Builder updates
and send for Class
approval.
20 SOLAS Training Manual incl. The FSOP (Fire Safety Operation Plan
Manual)
Builder/Class
21 International Pollution Prevention Certificate For The Carriage Of
Noxious Liquid Substances In Bulk (NLS Certificate)
Class.
106 Material
Structural steel material of main hull structure shall be of quality as required by the Class and shall be free of
cracks, lamination, surface defects and other similar defects.
Manufacturer’s standard type, size and materials of machinery, equipment and fittings shall be adopted, unless
otherwise specifically described in the Specification provided above reference to standards are met and
provided according to good international standard.
If any of the materials or equipment described in the Specification is not available, the Builder may supply
other materials or equipment capable of meeting the requirements of the Classification Society and of the
Rules and Regulations.
Substitution of the materials or equipment shall be subject to the provisions of the Contract.
No asbestos to be used in/on the Vessel.
Quality and constructional arrangement shall be made to ensure easy and future maintenance as far as
practically possible for all machinery and equipment.
All structures and equipment to be carefully and properly planned and prepared before installation onboard to
avoid misalignment.
Any structural members and equipment found not meeting this specification and contracts and international
ship building standards to be replaced.
If any of the specific description for the machinery or equipment in the Specification is not consistent with the
finally selected manufacturer’s standard specification, then the detail design shall follow the manufacturer’s
standard specification, provided the manufacturer’s standards are according to good international standard.
All fittings on deck including bolts and nuts to be of stainless steel material unless otherwise specifically
specified.
Stainless steel without grade notation in the specification shall mean Chinese Standard equivalent to JIS SUS
304.
All stainless steel materials, if any, used during ships construction must be stored and protected in such way
that it cannot become contamination carbon steel. When installed, it must be very well protected. Especially

when grinding or grit blasting will be carried out in the vicinity. After final installation all stainless steel
materials, pipes etc. must be in and outside pickled and passivated according the normal standards used in
stainless steel constructions or ASTM instructions, before delivery of the vessel.
All Grease nipples shall be of stainless steel pin type JIS B 1575 1/8” or equivalent ISO standard, but only one
type to be used throughout the vessel at Builder’s option.
All materials shall be new and unused.
Damages occurring to materials shall be suitably corrected or replaced with new before delivery of the vessel.
107 Workmanship
All workmanship used in the construction of the vessel shall be in accordance with good international
shipbuilding practice and all applicable rules, regulations and standards.
All structural members and openings on hull, all decks and inside tanks to have all free edges smoothly ground
straight with edge radius of 2 to 3 mm.
Special care shall be paid to secure easy future maintenance for all constructional/design arrangement.
In general, automatic or semi-automatic, low hydrogen, CO2 gas submerged arc, flux cored electode
welding are to be applied for structural member and hull members. All welding consumables should
be approved by BV.
All welders should hold BV class appropriate welder certificates. All welder qualifications should be
recorded and copies provided to the buyer
108 Spare Parts, tools and Accessories
Spare parts, tools and accessories for the machinery and equipment shall be supplied in accordance with the
Class recommendations and the manufacturer’s standards for one year spare parts supply, unless otherwise
specifically described in the Specification. A reasonable amount of additional spare parts supplied by the
Buyers should, however, be placed onboard during the outfitting period without extra cost.
Following spares shall be equipped for each ship in addition to the above items;
• One controllable propeller’s blade
• One spare anchor
• Four garbage containers made of stainless steel sheets to meet MARPOL requirement.
109 Unit of Measure
Metric system shall be adopted for design and construction of hull, machinery, equipment, etc, in general.
All measuring units such as power, pressure gauge, thermometer, volume gauge, tanks scales etc., to be in
accordance with metric system unless specially required by the Buyers’s at early designing stage.
110 Operating Temperature
Operating temperature of all exposed deck equipment such as, but not limited to, cranes, windlasses, hydraulic

aggregates, hatch covers, navigating equipment shall be minus 40 degrees Centigrade. (or to meet ICE class 1A
requirement)
111 Definitions Used In This Specification
The following standards to be applied on construction of the vessel:
Japanese Industrial Standards (JIS) or equivalent ISO standards. The Builder may alternatively use the
following equivalent Chinese Standards, provided it is documented to Buyers’s supervisors, that these
standards have quality level and dimensions at least equivalent to the comparable JIS/ISO:
Chinese Industrial Standard (GB)
Chinese shipbuilding Standard (CB)
Builder’s Engineering Standard
Chinese Metallurgical Standard (YB)
Chinese Machinery and Electric Standard (JB)
The ISO Standard to be applied as far as possible.
Special care to be paid of having standard for securing inter changeability of flanges, grease nipples etc.
112 Language
All documents, manuals and drawings for design and construction of the Vessel which shall be submitted to the
Buyers must be prepared in English.
113 Buyers Supplied Items
Following items shall be furnished and supplied by the Buyers at their own expense, and received, stored and
installed on the vessel by the Builder.
• All hoses, etc., other than those required by the Rules, or mentioned in this Specification.
• .
• Steel wires, ropes and hawsers for mooring in excess of the requirements of the Classification Society
and/or this specification.
• Deck, engine and cabin stores in excess of those specified in this Specification.
• All bedding (pillows, blankets, sheets, covers, etc.) but excluding mattresses.
• All napery (serviettes, table cloths, etc.)
• All cook’s and steward’s utensils (crockery, cutlery, silver-wares, china, glasses, pots, pans, etc.)
• All chandlery (soaps, lamp oil, etc. ) toilet papers, food and other consumables.
• All charts, sailing books and flags.
• All consumable stores.
• All medicine and medical equipment.
• All air tools and hoses except those specified herein.
• Personal calculators.
•
• Recreational equipment other than mentioned in these Specifications.
• Typewriter and other office machines.
•
• Hand tools other than specified in Specification.
• Broadcasting radio receivers and stereophony (sockets installed by Builder).

• Paintings and pictures.
• TV sets.
• Spare parts, navigation equipment, flags, etc., in excess of the requirements of the Rules and
Regulations as specified herein, and/or those specified in this Specification.
• Water, fuel oil, lubricants and grease, working oil for deck machinery, all consumable liquids or gas
including remaining L.O. in pipe etc. to be of the Buyers's account excepting those which have been
consumed trials and tests which are to be borne by the Builder.
STANDARD TO DELIVERY INVENTORY LIST
Besides the already built in equipment for galley, mess rooms, cabins etc following equipment to be delivered. The to be
delivered equipment must be of first class quality like SIEMENS, PHILIPS, BOSCH or AEG. All cooking appliances,
pans etc heavy model stainless steel with re-enforced bottom designed for use on electric stoves. Kitchen tensile, linen,
blankets etc to be of good quality at buyer’s satisfaction. Alternatively, a fair amount of money can be reserved for this
purpose, and then ships crew can buy the required inventory at yards account.
The following is always included in the ships delivery.
Pieces. Equipment. Position.
1 Deep fat fryer domestic model. Galley.
2 Toaster domestic model. Galley / mess rooms.
1 Microwave oven. Galley / Pantry.
1 Domestic cooling boxes maximum possible size with front doors. Galley.
1 Domestic freezing box maximum possible size with front doors. Galley.
3 Coffee makers 12-cup model. Galley / mess / bridge.
2 Electric water heaters 1 lt. model. Galley / Bridge.
1 Domestic multi function kitchen machine with auxiliaries. Galley.
1 Fixed, easy to clean, chopping block. Galley.
1 Domestic model mixer wit auxiliaries. Galley.
6 set. Towels and linen for kitchen use. Galley.
2 Frying pans big size heavy model with cover. Galley.
1 Frying pan medium size. Galley.
2 Cooking pan big size heavy model approximately 10 Ltr. Galley.
4 Cooking pan medium size model approximately 5 Ltr. Galley.
2 Cooking pan small size model approximately 1 Ltr. Galley.
1 set. Cooking pans several sizes. Galley.
2 set. Serving ware including soup bowls, serving plate’s etc. Galley / mess rooms.
2 Roasting tins 20- x 30-cm. Sizes depending on oven. Galley.
2 Water kettle. Galley.
2 Coffee cans 1 ½ litre model. Galley.
2 Tee cans 1 ½ litre model. Galley.
1 set. Kitchen knives several sizes. Galley.
1 Kitchen axe. Galley.
1 set. Wooden spoons. Galley.
1 set. Spoons etc. for kitchen use. Galley.
2 Can openers. Galley.
2 Cork screws. Galley.
3 Bottle openers. Galley.
1 set. Tableware including plates cups, eggcups etc. for 12 persons. Galley / mess rooms.
1 set. Tableware including spoons forks table knives etc for 12 persons. Galley / mess rooms.

20 Coffee cups big model. Galley.
3 Serving tray. Galley.
2 set. Salt – Pepper container. Galley.
15 Eggs cups. Galley / mess rooms.
3 Butter container. Galley / mess rooms.
3 Breadbox. Galley / mess rooms.
2 set. Storing boxes for spices, flour etc. Galley.
4 Dish wash brushes. Galley.
2 Plastic dishes wash basins. Galley.
1 set. Cake tins. Galley.
1 set. Bread baker’s tins. Galley.
2 pair. Oven gloves. Galley.
10 Buckets plastic 5-litre model. Galley, mess laundry.
4 Waste buckets self-closing 25-itre models. Galley.
10 Floor towels. Galley, mess laundry.
4 Dust pan with brush for tables. Galley / mess rooms.
Toilet brush and holder. For every toilet.
Floor mats heavy quality COCOS. For deck entrances.
Floor mats light duty. For every door.
2 Multi system PAL, SECAM and NTSC television sets. Big screen. Mess rooms.
2 Stereo radio sets. Mess rooms.
2 DVD player. Mess rooms.
1 Computer multimedia to be used for playing games etc. Mess rooms.
1 Flat iron. Laundry.
1 Iron plank. Laundry.
1 Vacuum cleaner domestic model. Mess rooms.
4 Cloth hooks Every cabin.
2 Towel hooks. Every wet space.
Mattresses. For every bed.
Pillows. For every bed.
Deck bed. For every bed.
2 pair. Sheet. For every bed.
2 Mattress covers. For every bed.
2 Pillow cover. For every bed.
1 Blanket. For every bed.
2 Towel big size. For every cabin.
2 Towel small size. For every cabin.
1 set. Gedore tool-locker 1400 with tools S 1400 GM. (altas) Deck workshop.
1 Roll. Air hoses 13 mm and air nozzle. Workshop.
1 Roll. Fresh water hoses 15 mm with spray nozzle. Engine room.
1 Hacksaw.
1 Ships bell to be installed on foremast. Acc. the rules
4 coils. Polypropylene mooring rope suitable for the vessel. Tipto 8 220 mtr each
2 Emergency (fire) towing wire with eyes according CDI. 25 mtr each
2 Raft ladders advance. Acc. the rules
2 Pilot ladder length 4-metres. Acc. the rules
1 Roll Hot water resistant deck cleaning hose 25-meter.
1 set. Stay wires for fore mast, if any, stainless steel.
1 set. Turnbuckles for stay wires fore mast.
1 set. Signalling equipment as class / flag state required.
1 set Clocks for mess room, officer cabins, bridge and cargo office.

Bridge equipment.
1 Sextant with certificate. Acc. the rules
1 Barometer with certificate. Acc. the rules
1 Chronometer in box. Acc. the rules
1 Clock with sectors. Acc. the rules
1 Air thermometer
1 Seawater thermometer.
1 Hand megaphone Acc. the rules
1 Flexible sounding rod.
1 Hand led 30 fathoms complete with led weight. Acc. the rules
1 Set of signalling flags 70 x 90 cm. Acc. the rules
1 Ships national flag.
10 National flags at buyer’s choice.
1 Parallel ruler.
2 Chart dividers.
2 Binoculars 7x50 in box.
1 Day (Aldis) signalling lamp with 24 connection and battery. Acc. the rules
4 Safety explosion proof torch.
1 List of life saving signals for bridge. Acc. the rules
1 Wheelhouse poster (filled in after sea trials) Acc. the rules
4 Oil record books. Part II-cargo ballast operations tankers. Acc. the rules
4 Oil record books engine room. Acc. the rules
1 British Admiralty chart atlas.
1 Marpol regulations last edition with annexes.
1 SOLAS regulations last edition.
1 IBC code regulation last edition.
To be corrected to all compulsory publications according SOLAS, IBC
code and EXXONMOBILE safety criteria.
114 Hull Form & Model Test
The Builder is to design the hull form, propeller and rudder suitable for the vessel’s speed and performance.
The vessel shall have bulbous bow, raked stem and transom stern. The fore end of the bulb shall not protrude
beyond the fore end of the forecastle bulwark.
The stern plates shall be welded together against a solid round bar (about 100 mm).
The builder to submit report of model tank test estimated fuel oil consumption and ship’s speed for designed
draft condition and scantling draft for suitable range of main engine RPM to Buyers within 3 months from
signing the Ship Building Contracts.
Model tests to include the following:
• Resistance tests at the designed draft and ballasting draft
• Self-propulsion tests with stock propeller at the design draft and ballasting draft
• Wake survey
• Flow line plan
115 Trim And Stability
Trim adjustment by using ballast water to obtain approximately even keel at fully load arrival condition shall
be possible.

At the preliminary stage, the Builder will submit trim and stability calculations to the Buyers at the following
loading conditions intended for the ship’s service.
• Light ship.
• Homogeneously loaded condition at scantling draft. Departure and arrival. Homogeneously based on
the design specific gravity
• Group loading condition. Departure and arrival.
• Ballast condition. Departure and arrival.
• Dry docking.
• Tanks 2, and 4 empty rest full.
• Tanks 1, 3,and 5 empty rest full
• Tanks 3 and 5 full rest empty
“Departure condition” shall be based on the full supplies of bunkers and other consumables, and “Arrival
condition” on approx. 10% supplies of departure condition.
Final trim and stability calculation for above loading conditions shall be made on the basis of the center of
gravity and the light weight of the Vessel obtained from the inclining experiment.
Specific gravity of water and oil for the trim and stability calculation shall be as follows:
Sea water: 1.025
Fresh water: 1.00
Heavy fuel oil: 0.98
Diesel oil: 0.85
Lub. oil: 0.90
Both intact stability and damage stability calculation shall be carried out according to latest regulation as
Intact Stability
• IMO A749
Damage Stability
• IBC Code
• MARPOL
The vessel shall always comply with the above damage stability criteria’s without the need to taken any ballast
when vessel is loaded with a full homogeneously deadweight cargo.
Hydrostatic tables, light ship weight with centers of gravity and longitudinal weight distribution to be supplied
to the Buyers at an early stage of the design.
Loading conditions shall include calculations of longitudinal hull girder bending moment and shear force.
It shall be demonstrated that the hull girder bending moment and shear force for all loading conditions are
below the allowable limits required by Class.

Preliminary Trim and Stability Booklet including bending moment and shear force will be submitted to Buyers
at an early design stage.
A preliminary Capacity Plan to be submitted together with the preliminary loading conditions.
If the final trim and stability booklet is under process of approval by the Classification Society and/or other
assigned Authority, the Builder shall provide the provisional trim and stability booklet upon the delivery of the
Vessel.
When the vessel is substantially (1)
completed, an inclining experiment to be carried out to ascertain the
position of center of gravity of the vessel at the finished light condition.
(1) Substantially completed shall mean that only some minor works remains as agreed by Class and Buyers.
The inclining experiment shall be carried out in the presence of the Buyers’s Representative and the
Classification Society surveyor. The procedure of inclining experiment and deadweight measurement prepared
by the Builder shall be approved by the Classification Society or other assigned Authority.
Incline test to be carried out in calm water and calm weather, with all cargo tanks and ballast tanks all full or
empty, bilge all clear and free of water or oil.
Slack tanks shall be avoided as far as practicable, free surface of remaining tanks shall be easy controllable.
The results of the experiment shall be submitted to the Classification Society or other assigned Authority for
approval.
The Builder will send the results for Buyers’s approval or comments, if any.
In case of series of sister vessels, the inclining experiment shall be carried out only for the first vessel of the
series, if not otherwise required by Classification society.
116 Determination Of Deadweight
The deadweight is to be expressed in metric tons unit.
The deadweights is to be the difference between the displacement including shell and appendages of the vessel
at the scantling draught of 6.5 meters in fresh water (specific gravity to be determined by measurement on
the spot) and the light weight, which consists of following items:
• Hull steel
• Fixed fittings, equipment and inventories as per rule requirement
• Machinery in dry condition other than mentioned in here after
• Spare parts and tools in accordance with the class requirements.
• Fuel oil in main engine, auxiliary engines and in supply piping from the outlet of service tanks to each
engine.
• Lub. oil in main engine and auxiliary engines, in coolers for main engine and auxiliary engines and in
circulating piping from sump tank to each engine
• Sea water in fresh water coolers and circulating piping from sea chests to overboard

• Fresh water in main engine, auxiliary engines, fresh water coolers for main engine and closed
circulating piping from and to cooling fresh water pumps through the engine
The following items shall not be included in the light weight:
• Spare parts and tools which exceed the manufacturer’s standards and Class requirements
• All consumable stores
• Articles supplied by the Buyers, which is not defined as part of the lightship
• Crew and their effects
• Oil and water in hull pipings and tanks
Others not mentioned as lightweight items.
117 Building Process
Construction and outfitting of the vessel to be made under the Builder’s building process and practice specified
hereunder.
Suitable size of blocks shall be assembled at shop in general and then erected on building berth or at building
dock.
In general, if auxiliary machinery (except generators), beds or seats for such auxiliary machinery, pipes, valves,
etc, shall be assembled and if required inspected at shop as a unit, then, such unit shall be brought onboard the
vessel and installed.
After installation or such units in the vessel, centering of the auxiliary machinery shall be checked by the
Builder and corrected by shims if necessary. The auxiliary machinery and accessories fitted in such units shall
not be dismantled for such checking purpose unless otherwise considered necessary. The Buyers’s supervisor
(hereinafter called “the supervisor” ) shall be informed and attend the checking of the centering.
Excessive misalignment shall not be allowed to correct by shims, Class to decide whether a misalignment is
excessive or not.
118 Dry Docking
Vessel shall be dry-docked for hull cleaning and completion of painting and repair before seatrials. Any defects
found should be rectified before undocking.
Box Coolers should be opened up for inspection and clean if found necessary.
119 Inspection Tests and Trials
1191General
Reference is made to Shipbuilding contract.
The Builder shall at all time keep the Buyerss advised in every respect of the programs of work and upon
request, methods which he intends to use. Notices of major events, tests and trials shall be given sufficiently in
advance to the Buyer to permit them or the person they designate to make necessary arrangement in order to
attend the tests or event.

All necessary drawings and information which are required for the inspector or permit him to carry out his
work and keep the Buyerss advised of construction details and work progress, shall be made available to him
upon request.
Inspection by the Buyerss’ representatives shall be regarded as a verification of the Builders own quality
control measures and shall not be used as a substitute for quality control.
In case the Buyer Inspector is unable to attend any test, he may designate a person to act on his behalf,
otherwise the inspector shall waive the right to have comments for such test, provided notice is given as
agreed.
Whenever materials, equipment and machinery etc., have been tested and inspected by the Buyerss’ supervisor,
such material and equipment shall be clearly marked and assigned to the vessel. Such materials and equipment
shall not be exchanged with any other without the Buyers’ written consent.
At the acceptance inspection each space shall be completely clean and finally painted if/as specified and fitted
out in accordance with specification.
All piping shall be proven tight and free of internal obstruction. Electric cabling and equipment shall have a
satisfactory megger test and prove operational.
All test programs as given in the list for inspection shall be submitted to the Buyerss representatives for
approval at least two weeks prior to the test. Application for inspections shall be submitted to the Buyerss
representative the day before inspection if such inspection is in the Yard.
In general, all work equipment, machinery, systems etc. whether belonging to hull part or machinery part shall
be tested sufficiently onboard to prove specified performance, safe operation, suitability in service compliance
with all applicable Rules and Regulations.
The Builder is to deliver the vessel in a clean and freshly painted condition, all valves, wires, machinery oiled
and greased, refrigerated stores cooled down to operating temperature, hatches, booms and stores securely
stowed and ready for sea.
1192 Progress
The Builder is to provide the Buyers the intended schedule of construction until delivery before keel-laying, In
case the Builder falls behind the intended schedule, the Builder shall try all possible efforts to bring the vessel
back on schedule in order to meet delivery date.
Builder’s standard programs for inspection, test and trials shall be submitted to Buyerss for review/comments
a.s.a.p.
Building and construction plan and schedules for each vessel should be prepared by Builder and submit to
Buyers representative in writing monthly.

1193 Tests and Inspection
11931 Hull Structure Tests
All steel structures to be inspected and tightness to be tested for tanks, bulkheads and superstructure deck and
other wet space etc. as required by the Class Rules.
Tank shall be tested hydrostatically or by air as required by the “Class Rules”.
X-ray photographs or ultrasonic inspection to be taken mainly from cross-points of seams and butts block
assemblies of bottom shell, bilge strake, main deck and sheer strake as required by the “Class Rules”.
11932 Hull Inspection
The block inspection shall be carried out after completion of hull block steel works. If fittings are fitted wholly
or partially to the hull blocks, the inspection for the hull blocks shall be carried out without dismantling such
fittings provided satisfactory access to all hull parts. The internal inspection for hull construction works of
tanks, engine room, etc. to be carried out even if outfitting works in such spaces have not been finished yet but
any works in connection with strength and tightness of the hull construction shall be completed before the said
inspection, in which case, after completion of the outfitting work, final inspection of such parts to be made in
accordance with the mutual agreement between Buyers representatives and Builder. Inspection of the hull
construction shall be made before any paint work is done.
Shop tests shall be carried out for the machinery and equipment by the manufacturers at their shops.
Test results of major machinery and equipment shall be furnished to the Buyers in triplicate.
The Buyers shall be informed of the shop test schedule at least seven days in advance of the expected date of
the shop tests and the Buyer’s attendance shall confirm with the Builder four days in advance of the expected
date of the shop test.
11933 Installations and Equipments
Installations and equipment shall be tested on board in accordance with the “Class Rules” and/or Regulatory
bodies and the standard of the Builder and approved by the Buyers.
11934 Piping Test
As far as hydrostatic test is practicable for a part of piping system, such test shall be made for such part before
completion of the whole system. Working test shall be carried out after completion of the piping system.
1194 Mooring Trial
Mooring trial for the main engine with associated auxiliary machinery and equipment shall be carried out prior
to the sea trials while the Vessel is moored at the Builder’s quay:
• Confirmation of starting position
• Turning gear interlock test
• Confirmation of control position
• Safety device test (automatic trip by simulation)
• Minimum revolution test

• Test of starting air capacity
• Inspection of crankcase
1195 Sea Trial
When the vessel is substantially completed, sea trial shall be carried out by the Builder in accordance with the
sea trial procedure which shall be prepared by the Builder according to Class requirements and Testing of New
Ships and Builder’s standard, and shall be submitted to the Buyers for approval.
Marine diesel oil and heavy fuel oil with viscosity as available on the domestic market shall be used during the
sea trial.
All lubricating oils used for trials should be international brand and approved by Buyers. (Castrol)
Sea trial shall be carried out at the designed draft condition.
Sea trial to ascertain that the vessel conforms with the terms of the contract and specification.
Machinery and sea trials schedules in writing to be submitted to Buyers for approval 14 days in advance.
11951 Progressive Speed Trial
Speed trial for the assessment of the guaranteed speed performance shall be conducted in deep water, by
means of the GPS and shaft power to be measured by torsion meter.
Results of speed trials shall be corrected to the calm water (no wind, wave).
Applied method for correction shall be based on internationally accepted methods. Corrections shall be carried
out by Builder and approved by Buyers.
The progressive speed trial shall consist of one (1) double run (alternating in direction) at main engine loads of
60% MCR, 75% MCR, NCR and MCR.
11952 Endurance Trial
Endurance trial shall be conducted for four hours at NCR load and one hour at MCR.
11953 Maneuvering Trials
The following tests shall be carried out to check the maneuverability of the Vessel:
• Crash stop astern and ahead test
• Turning test
• Inertia test
• Minimum revolution test
11954 Other tests and measurements
The following tests and measurements shall be conducted at proper time during the sea trials according to the
requirements of the Classification Society and the Rules and Regulations and the Builder’s practice.
• Unmanned operation test (during endurance trial)
• Steering gear test
• Shaft torsional and axial vibration measurement

• Electrical load measurement (during endurance trial)
• Operation test of navigation equipment.
• Confirmation of gyro compass and adjustment of magnetic compass
• Anchoring test
• Black-out test
• Fire detection and alarm test (or during mooring test)
• F.W. generator capacity test at NCR during endurance trials.
• Exhaust gas economizer evaporation test
• Shaft generator running and take over.
• Bow thruster test.
• Gearbox gear tooth contact tests as per Class Rules
Other tests and measurements shall be carried out by Builder as required by Class and regulatory bodies.
In case of the series vessels following trials and measurements shall be conducted only for the first vessel for
Buyers.
• Progressive speed trial except for guarantee speed point
• Maneuvering trials
• Shaft torsional vibration measurement
• Electrical load measurement
11955 Overhauling, Inspection after Sea Trial
After sea trial, working parts of main engine shall be opened for the Buyers’s inspection in accordance with the
standard of the Builder approved by Buyers and refitted to working condition. A confirmation dock run after
overhauling for ½ hours at low load to be carried out before delivery.
Above tests shall be deleted for further sister vessels for Buyers after mutual agreement and successful sea trial
for first ship for Buyers.
120 Plans For Approval
A list of the plans for approval shall be prepared by the Builder. The list shall be mutually agreed by Buyers
and Builder at early time of design stage.
Softcopy of each of the plans for approval in AUTOCAD files shall be submitted (one copy send by E-Mail) to
the Buyers for approval in accordance with the “List of the Plans for Buyers’s approval”.
The Buyers shall, within fourteen (14) working days after receipt thereof, return to the Builder one copy of
such plans with the Buyers’s approval or comments, if any, written thereon.
In the event that the Buyers shall fail to return the plans within the time limits as herein above provided, such
plans shall be deemed to have been approved or confirmed without any comment. (The Buyers’s comments

may be made by facsimile or email).
The Builder may submit the plans to the Buyers’s Representative resident in the shipyard for approval, subject
to the provisions of the Contract.
The Representative shall, within seven (7) days after receipt there of, return one copy of those plans with
approval of comments, if any.
The Builder’s standard plans and the manufacturers’ plans with or without modifications may be used as plans
for approval and also working plans. The drawings can be submitted in softcopy via email. However the final
drawings submitted to Buyers shall have both one set of softcopy in AUTOCAD files and one set of hard print.
121 Finished Plan And Instruction Books
At the time of the Vessel’s delivery, finished plans both softcopy in CD Rom in pdf format and hard blueprint
shall be furnished to the Buyers in triplicate, one copy to the Buyers’s site office and two (2) copies to the
vessel.
The scope of supply of the finished plans shall be in accordance with the Builder’s standard and the list of the
finished plans shall be submitted to the Buyers in due course for approval.
The following plans, one copy each, shall be provided in frames and placed on board the Vessel at such
locations as designated by the Buyers’s Representative:
• General arrangement (2 Sets)
• Capacity plan with deadweight scale
• Maneuvering characteristics
• Safety plan (2 Sets)
•
Three copies of the instruction books of the Vessel’s major machinery and equipment shall be furnished, one
set of the Buyers’s site office and two sets to the Vessel.
General Arrangement Plan, Capacity Plan and Pocket Capacity Plan shall be supplied as reproducible in
addition to copies.
122 Name Plates And Identifications
Name plates for main engine, deck machinery, auxiliaries and electrical equipment shall be described in
English and in metric system. Name plates of other installation shall be referred to respective specifications.
Name plates and caution plates shall be described in English.
All name plates and caution plates shall be approved by Buyers.
Name plates shall be screwed on, glue is not allowed for fixing name plates.
Boundaries of tanks and every 10th
frame should be marked with welding beads.

123 Delivery
When completed, the vessel shall be delivered to the Buyers in a seaworthy condition, safely afloating at the
Builder’s wharf or Shanghai area under the requisite legal formalities.
Tanks, cargo holds, bilges, accommodation and other spaces shall be free from tonnage and dirt, completed in
every respect and ready for service. Painted surfaces shall be touched up and cleaned, machinery to be in
running order, all electric lights to be in good working order, outfits, spares and stores to be properly stowed,
and compass to be adjusted.
124 Exemption
For the second and successive sister vessel, the submission of plans for the Buyers’s approval may be exempted
with in so far as there involves no alteration of the design. Also the following tests may be exempted subject to
approval of the Buyers, Classification Society and other regulatory bodies.
• Inclining test (deadweight measurement shall be carried out)
• Stopping inertia test
• Measurement of crash stop test
• Turning test 360 degrees with the helm angles of 35 degrees port and starboard
• Model tank test.
200 General Particulars
201 Principle Dimensions
Length overall: 111.50m approx..
Length b. p.: 106.00m approx
Breadth mld: 17.60 m approx.
Depth mld: 9.00 m approx.
Design Draft: 6.80 m approx.
Scantlings Draft: 7.20 mtr approx.
202 Speed and Endurance
Trial speed at design draft at 85% of. continuous output of main engine (MCR), with clean bottom in calm
and deep sea under beaufort scale of 2 or less about 14.0 knots.
Endurance based on 98% of heavy fuel oil tank capacity and service speed of 14.0 knots will be decided
according to the tank capacity plan with minimum 4000 sea miles.
Fuel oil consumption per day will be determined later at 90% of maximum continuous output for propulsion
(the figure is based on a lower calorific value of at least 42,700KJ/Kg and according to ISO 3046/I). Fuel rate
for main engine at MCR is with reference to main engine maker.
203 Installed Power
Main engine MAN B&W 7L28/32A
Number of set 2 sets

Max. continuous output (MCR) 1715KW
Max. continuous revolutions at MCR 775 rpm
Continuous service Rating (CSR)
Propeller
Type 4 – Blades, controllable pitch type
Number of set 2 sets
Gearbox For details see item 9023
Revolution of propeller To be determined
Diameter of propeller To be determined
Material of propeller
Ni-Al-Bronze
Main generator set
No.of set & power
Electric source
Three (3) sets x according to power balance
calculation abt. 400 kw x 1800 rpm
A.C. three phases, 450V, 60Hz.
Emergency generator set Same as main generators
No.of set & power 1 set x 250 kW x 1800 rpm
Electric source A.C. three phases, 450V, 60Hz.
Main generator sets depends on the cargo pump driven system.
Electrical load balance has to be made before power of main generators can be decided.
Shaft Generator
Shaft Generator 2 sets
Electric Source A.C. Three phase, 450 Volt. 60 Hz.
Shaft generator should be of PTO only
Cooling system for all engine (except emergency generator) shall use box coolers as much as possible to avoid sea
water pumps and sea water pipe lines in engine room.
All generators are arranged and able to run in parallel with automatic load sharing.
When running the two sets of shaft generators, the generated power should cover all normal electricity consumption
onboard without running the main or emergency generators
204 Deadweight and Capacity
The guaranteed deadweight in sea water (specific gravity of 1.025) shall be 7500 metric tons at designed
draught of 6.80 m.
Scantling draft will be 7.20 mtr. Approx.
Following is the detail tank capacities of the vessel;

Cargo tanks capacity (98% full) abt. 8500 m3
Fuel oil tanks capacity, incl. Service & settling tank abt. 250 m3
Diesel oil tanks abt. 100 m3
Fresh water tanks capacity (98 % full) abt. 100 m3
Water ballast tank incl. F.P.T. & A.P.T. abt. 1950 m3
205 Cargo List
The cargo list of oil product and chemicals (Noxious liquid substances in bulk certificate) carried by this vessel
shall be according to the Class Notation. The cargo shall not be harmful to the vessel’s structure construction
and cargo handling system. Following is main cargo list:
1 Oil cargoes (MARPOL Annex I), exclude Asphalt, Bitumen, etc.
Included oil like substances.
2 IMO Type II Chemicals and etc.
3 Molasses
206 Bow Thruster
The vessel shall be equipped with a bow thruster at forward of ship to improve maneuvering performance.
400 kw electric driven motor shall be installed. The motor shall be soft started without causing black outs.
The four blades controlled pitch propeller is equipped or fixed pitch with 3 steps controller.
207 Deck Heights, Sheer And Camber
2071Height Between Decks At Centerline
Item Metric (just for reference)
From upper deck to poop deck 2.70 m
From poop deck to boat deck 2.60m
From boat deck to navigation bridge deck 2.60 m
From navigation bridge deck to compass deck 2.60 m
From upper deck to forecastle deck 2.60 m
2072Shear On Main Deck
Due to Camber
2073Camber of Decks
Main deck, straight camber 0.32 m
Forecastle deck, straight camber 0.32 m
Other decks 0 m
Platform decks in engine room 0 m

208 Complement
According to agreed G.A. and Accommodation plan.

300 Hull Structure
301 General
The ship is designed at a scantling draft of abt 7.20 m and shall be approved by BV. It is of all-welded mild
steel construction. High tensile steel may be used for ice strengthened area to reduce the light ship weight.
Structure work shall be executed in accordance with the Builder’s standard practice with reference to JIS
standard which is approved by the classification society.
Welding shall be performed by manual, gravity, electroslag, CO2 and automatic welding. Continuous welds to
be applied in all tanks, wet spaces and external areas. Full penetration welds to be applied in cargo tanks.
The combined framing system is used for the hull structure. The main hull structure is designed and checked
against the class rules for carrying product oil and chemicals. Cargo oil tanks are suitable for partially loading
cargoes with specific gravity up to 1.52. The structure scantlings are suitable for any level of filling, including
alternative loading. The sloshing effects are to be considered for deck structure, bulkhead structure during
partial loading condition.
One central longitudinal continuous oil – tight vertically corrugated bulkhead and seven transverse oil – tight
vertically corrugated bulkheads are allocated in the cargo oil hold region. Two transverse bulkheads at the both
end of cargo area shall be flat bulkhead with vertical stiffeners face outside of cargo area. There will be no
frames stiffeners or what so ever inside the cargo tanks. The use of angle bar as framing is avoided as much as
possible.
Structural strength including buckling strength of the corrugated bulkheads should be calculated and approved
by BV classification.
Main hull structure shall be designed and calculated in accordance with the requirements for oil tanker with a
NLS certificate of BV’s Rules. The hull structure to be designed to fully load liquids with specific gravity up to
1.52 t/m3
in cargo tanks and slop tanks with adjacent tanks to be empty, including slack tank conditions.
Longitudinal strength including bending moment and shear force at specified bulkheads for all loading
conditions will be calculated.
The scantling of all structural members shall comply with the rules of classification society unless specify here
after.
Before assembly, all steel plates with thickness 6 mm or more that are to be painted later shall be shot – blasted
according to Swedish Standard SA 2.5 and painted with 15 micron zinc silicate primer.
Insert plates shall be used instead of doublers as much as possible.
The use of angle bars must be avoided, as much as possible. In principle angle bars should be only used for
framing gratings.

If angle bars must be used outside they must be used as “V” shaped frames, fully welded and top and bottom
of such frames must be totally closed, so that the water cannot penetrate inside this frame.
302 Material and Welding
All mild steel higher grade steel, forgings, castings and anti-magnetic material manufactured in the hull
structure and deckhouse shall meet the quality as per required by classification society.
Steel material not specified by the Classification Society shall be in compliance with Chinese Industrial
Standard according to the Builder's practice.
In way of compass zone, non – magnetic steel plates and sections shall be used as per requirement of rules.
Steel plates shall be free from lamination and segregation. Visible steel plates at outer shell plating above and
below waterline shall be smooth without defects and repairs.
Castings and forgings below waterline, such as shaft struts, bossing, rudder horn and stock shall be delivered
with first class surfaces without pins or blow holes. Sand and slag enclosures shall be avoided. Gas cutting
notches shall be smoothly rounded and uneven spots shall be smoothed by grinding.
Welding procedure including edge preparation shall be executed in accordance with the Builder’s established
modern welding procedure and practice with reference to EC/JIS standard and approved by the Classification
Society.
Automatic welding shall be used to the greatest extent. The welders engaged in the welding shall be fully
qualified and holding welding certificates from the Classification Society for the type of welding carried out.
Electrodes and other welding materials have to be properly selected for the special intended purposes.
All welding shall be continuous except in dry spaces in the superstructure and deckhouse where intermittent
welding is permitted.
Care shall be taken to avoid stress concentration due to welding, heating and discontinuity of the structure or
build – in stress.
In order to ascertain the soundness of welding suitable number of X-rays photograph to be taken for the
important members according to the Rules'requirements. The X-ray photograph and report shall be submitted
to the Buyers for checking.
All fittings (including bolts and nuts) on deck unless otherwise specifically specified are of stainless steel
materials.
303 Main Hull
The ship shall be designed as double hull construction. Double skin and double bottom shall be provided as per
Rule’s requirements.

The width of wing tanks shall be 1.0 m and the height of double bottom shall be 1.2 m.or smaller if allowed by
Marpol requirements for IMO type II ship .
The scantling, construction and materials of hull within a range of midship part shall be as shown on Midship
Section Plan.
In designing, longitudinal strength to be checked to all loading conditions required by the Rules. It is to supply
the calculation of main structure, midship section, construction plans (incl. profile, decks, bottom etc.) at the
technical designed stage.
Double bottom to be located in cargo oil tanks region, pump room and engine room.
The bottom plate and inner bottom plates in cargo oil tanks region shall be stiffened by longitudinals, and those
in engine room shall be stiffened by floors. The inner bottom plating in cargo tanks shall be sloped towards
cargo pump suction well (near centerline of vessel). The suction well structure for cargo pump to be designed
by the cargo pump Manufacturer and to be approved by the Buyers. The suction well must have round corners.
All suction wells with fittings, bolts and nuts for cargo pumps are of stainless steel AIS316L materials,
The bottom plate at the forward area shall be strengthened in accordance with the Rules.
One tier non-watertight platform deck shall be arranged in engine room.
Shell framing in engine room to be adopted transverse framing type and the web frame to be fitted. Pillars shall
be fitted in suitable frame and to be connected with the plate floors and transverses.
The fore and aft peak tanks to be used as water ballast tanks and shall be built with transverse framing system.
The shell plating in way of hawse and one plate below shall be strengthened with thicker plate. Stem frame
shall be of fair formed steel plate construction, well raked forward with round and to be of welded construction
with suitable breast hooks.
A sheerstrake shall be butt welded to the deck stringer plates. Openings of shell such as sea chest shall be in
accordance with the Rules.
The thickness of upper deck within 0.4L amidships to be met the requirements of longitudinal strength.
The transverse bulkheads and centre longitudinal bulkhead in cargo oil tank area shall be vertical corrugated
type bulkheads. However the transverse bulkhead for both end of cargo area shall be flat type bulkhead with
stiffening facing outside of cargo tank. Side longitudinal bulkheads formed wing tanks in cargo space shall be
flat type bulkhead with stiffening facing outside of cargo tank as well. The longitudinal bulkheads of double
hull construction shall be designed with longitudinal framing in wing tanks. NO frame’s and or stiffeners or
what so ever, are allowed inside the cargo tank.
304 Stem and Stern
The stem which is casting, throughout together with bulbous bow shall be of fabricated welded steel plate
constructions to the shell lines, and welded to the shell and keel plates.

Stern frame is to be of fabricated welded with steel plates and weldable steel castings.
Low hydrogen electrode shall be used for welding thick steel plate to casting.
305 Keel Plate
The plate keel shall be connected firmly with stem and stern frame.
306 Shell Plating
Stringer plates and sheer strake are to be connected welded "T" type corner fillet.
Section Plan welding quality and inspection are to be in accordance with the requirements of the Rules.
Extra thickness and stiffeners undersides are to be provided by inserted thicker plates in way of run of anchor,
anchor housing, around sea chest openings. Openings in shell plating to be well rounded and reinforced by
inserted thicker plates.
The thickness of the shell plates shall be reduced gradually from midship to fore and aft end in accordance
with the requirement of the Rules.
The lifting rings to be provided for propeller and rudder installation. Lifting lugs with SWL marking by
welding beads should be arranged in the longitudinal directions.
307 Bottom Structure
Longitudinal framing system are to be provided for hull bottom construction in cargo tank, and transverse
framing system for engine room space and fore and aft peak tanks.
Attention shall be paid to the members for the transition region of the longitudinal and transverse framings.
In double bottoms, solid floors to be fitted for suitable frame spaces, and watertight floors to be fitted at
watertight bulkheads. Bottom and inner bottom longitudinal as well as side girders shall be fitted.
Solid floors shall be fitted at every frame in fore peak and aft peak. Suitable drain holes to be arranged in
double bottom tanks so as to be able to discharge/drain easily.
308 Side Shell Structure
The upper part of side shell structure to be of longitudinal framing system. Web frame shall be fitted in
association with solid floors.
309 Decks
Upper deck shall be strength deck, longitudinal framing system shall be adopted.
Web beams shall be fitted in line with web frames.
The camber of upper deck shall be straight.

Structure shall be suitably strengthened under cranes, etc.
Deck plating under all machinery such as cranes, windlass, and mooring winches should have increased plating
thickness.
Platform deck to be provided in engine room, platform for the generators shall be reinforced necessarily.
310 Pillars
Pillars shall be provided where necessary in engine room in association with web trams and web beams.
Adequate number of pillars shall be provided under the superstructure decks or deck house walls under
concentrated loadings.
311 Bulkhead
Watertight transverse bulkhead shall be extended to the upper deck as shown on the General Arrangement
Plan.
The transverse bulkheads between cargo tanks shall be of vertical corrugated type without upper and lower
stool. The longitudinal bulkheads in cargo tanks shall be of plane type.
Outside boundary walls for the superstructure to be plane with vertical stiffeners. For the inner boundary walls,
the corrugated steel walls could be provided. The reasonable arrangement for steel walls in the deck houses to
be provided so as to reduce the vibrations to the least.
Boundary steel walls to be built for the carpenter's work room, stores, control rooms and other necessary space.
312 Peak Tanks
Fore and aft peak tanks to be reinforced with side transverses, side stringers or non-watertight opening
platform and to be used for water ballast tanks.
Fore peak and fore area shall be reinforced for panting and slamming.
313 Superstructure and Deck House
Four tires of superstructure shall be arranged on the after of main deck as per General Arrangement Plan.
Superstructure and deck house are of welded steel construction. In general, the plates thickness shall not be
less than following table;
Exposed deck: As per class regulations
External walls: 7 mm ,, ,,
Other area: 6 mm ,, ,,
The superstructure and deck house are steel flat plates watertight construction with vertical stiffeners.
Forecastle and poop deck shall be of transverse framing system in connection with strong beams, girders and
pillars. Deck house shall be of welded plating stiffened with beam and girder.

A flat plate with stiffeners shall be applied for the accommodation front wall and accommodation house walls.
All accommodation block plate stiffeners are fitted internally.
Decks in superstructure and deck house shall be transversely/ longitudinally stiffened with beams, girders.
Continuous welding is employed at all wet spaces.
Wheel house front wall shall be inclined outwards from the navigation bridge deck as shown on the General
Arrangement Plan.
314Rudder
Rudder will be Barkemeyer Flap type, rudder will enclosed gear.
All below paragraph depends on Barkemeyer specification.
Rudders shall be designed according to the speed at maximum continuous rating with fully loaded condition.
The working angle shall be 45 degrees from the rudder’s center vertical plane. Rudders shall have necessary
area to keep reasonable course stability and steering performance in accordance with good maneuverability.
Two sets of rudder with double plates, streamlined, semi – balanced hanging high efficient rudder type
(Barkemeyer Flap type) and of welded steel construction and welded cast steel shall be installed in line with
the propeller according to makers instructions.
Two stainless steel (AISI 316L) plugs for filling and draining shall be fitted at the top and bottom of the
rudders (depends Barkemeyer design).
Water tightness shall be tested in accordance with the requirements of the classification society.
The lifting hole shall be provided on rudders which is able to be kept closing by welded plate.
Welded jumping stopper shall be provided on the top of lower pintle housing(clearance is approximately 2 mm)
to prevent the rudder from undue lifting and accidental up-shipping (depends Barkemeyer design).
Pintle housing on rudder shall be of cast steel and have cone part. The pintle bushes shall be renewable in
position without up-shipping the rudder.
Bottom clearance of the rudder and propeller shall be of minimum 200 mm above the baseline.
Rudder stock and pintles (upper and low) shall be of forged steel with stainless sleeve at the position of rudder
carrier of material recommended by the rudder manufactory. Rudder stock is coupled keyless with the rudder
ad fixed by the bottom nut.
The lower (wet bearing) of the rudder stock shall be made of ORKOT or RALCO bearing (artificial material)
or completely sealed bronze bearing. Rudder stock bearing, seal and all major bearings are to be lubricated by
means of an automatic electric driven lubricating device to circulate the grease. The complete rudder truck will

MDSSL HUBO 7500DWT Chemical tanker Specification

MDSSL HUBO 7500DWT Chemical tanker Specification

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