HINDUSTHAN SHIPYARD INTERNSHIP REPORT

REPORT ON INDUSTRIAL TRAINING
HINDUSTAN SHIPYARD LIMITED
VISAKHAPATNAM
Indian Maritime University, Visakhapatnam Campus.

Preface
This project report is prepared during the summer industrial training undertaken at “HINDUSTAN
SHIPYARD LTD., Visakhapatnam”as partial fulfilment of the degree in “B.Tech Naval Architecture
and Ocean Engineering”atIndian Maritime University, Visakhapatnam Campus.
Theory of project is important, but without practical knowledge it becomes futile particularly for the
engineering students. The knowledge ofengineering is incomplete without the practical applications
of the theories studied. This training provides a golden opportunity to all the students, especially
engineering students who are not familiar with the functioning and working of project construction
facility. Hence, this report is designed with the objectives to gain practical know-how and is
undertaken at“HINDUSTAN SHIPYARD LTD., Visakhapatnam”.
Acknowledgement
Industrial training at HSL had been a great learning experience forme. The theoretical knowledge I
gained during my three years of study at IMU, Visakhapatnam had been complemented effectively
due to the guidance and supportprovided byHSL employees.The factors that need to be taken into
consideration while designing a ship cannotbe fully covered theoretically. This practical knowledge
can only be guided byhandling those cases yourselfor by witnessing the process under guidance.
The shipbuilding processatHSL is a holistic one.HSL has been catering to Indian and international
clients with ease.The reason for the title of one of the largest governmentshipbuilding companyin
India was plainly visible.
I would like to acknowledge Mr.Sanyasi Rao, Deputy Manager,Training department, for allowing
me to complete my training at HSL underknowledgeable training guides who were happyto pass on
their wisdom guided over experience.Also I am very thankful to all those guides and department
engineers whom I visited to get the details related to my research. The process of teaching and
giving practical experience soon after, was an effective one.
Finally, I would also like to thank my college and departmentfor making such training compulsory
for students and for providing me an opportunity to visit HSL.

Introduction
Sr. No. Contents
1 Training Schedule
2 Introduction
3 About HSL
4 Shipbuilding Terms
5 Hull Shop
6 Pre Fabrication Department
7 Erection Department
8 Engineering Department
9 Plumbing Department
10 Design Department
11 Quality Control Department
12 Conclusion

Ship Building Industry
International Level:
Shipbuilding is a global industry. China, South Korea and Japan currently control
approximately 90% of the total market share measured in dead weight tons (DWT). The
Indian shipbuilding industry is small by global standards, and currently accounts for less
than 1% ofthe globalshipbuildingindustry. The Structure of the Indian shipbuildingindustry
can be divided into three distinct segments viz. Public sectorshipyards,Defense shipyards
and Private shipyard.
This industry is dynamic and cyclic in nature therefore challenges result in proceduraldelays and
hampers augmentation ofcapacity.
Domestic Level:
Recent economic growth and wider trade patterns have resulted in longer voyages, and
increased tonnage per mile, and that has caused a shortage of ships to develop with
consequentincreases in freight rates. The increase in freight rates has encouraged ship
owners to place orders for more new ships. The increase in new vessel orders during the
period from 2004 to 2006 has included all the main categories of commercial ships,
including the Panamax bulk carriers. The higherlevels of placementof globalnew vessel
orders in 2006 has continued into 2007, but from last three to four years i.e. from 2011
shipping industries has been affected by Global recession.
Government Sector Shipbuilding Industries
1) Cochin Shipyard Limited 4) Hindustan Shipyard Limited
2) Mazagaon Dock Limited 5) Goa Shipyard Limited
3) Garden Reach Shipyard 6) Hooghly Docks
Private Sector Shipbuilding Industries
1) ABG Shipyard 4) Bharti Shipyard Limited
2) Pipavav Shipyard 5) L&T Shipyard Limited
3) Tebma Shipyard 6) Chowgule & Co. Ltd. Etc.
About HSL

Hindustan Shipyard Limited is strategically located on the east coastof India at Visakhapatnam in
Andhra Pradesh originally set-up underprivate managementin 1941.The Shipyard was taken over
by the government of India in 1952. The shipyard functions under the administrative control of
ministry of shipping, Road Transportand Highway, Govt. ofIndia.
Hindustan shipyard Limited is the pioneer ship building industry in India. It is located on the east
coaston 83.17’E latitude, 73.41’N latitude. It is one of the prestigious industries in Visakhapatnam.
HSL is the part of the natural harbor ofVisakhapatnam portand naval Dockyard meeting with it.
Dr. BABU RAJENDRA PRASAD, The presidentof India NationalCongress laid the foundation stone
on 21st June 1941 for Scindia Steam Navigation at Visakhapatnam. Mr. Walchand Hirachand
Scindia was the founder ofShipyard.
In 1949, there were 4000 men employed and 9 British engineerincluding Mr. Compher (the chief
Manager of shipyard). In March 1950, Government with the formation of Eastern Shipping
Corporation entered the field of shipping .It was a joint venture with Governmentholding 74%of the
capital and Scindia 26%ofthe capital. Scindia Steam Navigation Company(SSNC) was established
at the presentplace of HSL later it was taken over by late Sri Walchand Hirachand,who opened a
boatbuilding Companywith the collaboration ofM/S .Sir Alexander& partners consulting engineers
in U.K. The keel of the ship names “JALA USHA’’ was launched on 14th March 1948 by late Pundit
Jawaharlal Nehru our firstPM.
BACKGROUND:
The shipyard has built and delivered so far over 137 ships aggregating over 1.27 million DWT. The
shipyard has built big ships, small crafts, tugs, dredges, naval vessels, passenger ships, training
ship, drill ship, off shore patrol support-cum-stand by vessels etc. of different designs for owners.
HSL has undergone modernization ata costof approximately100 crores.The shipyard is atpresent
capable of building bulk carriers up to 80,000 DWT.HSL with expertise skill, sound technology and
a hostof hullengineering back upfacilities also offers excellence ship repairs and drydock services.
The recentorders were MOT, Research vessels, A&N administration for barges, utility boards.Tour
ships of 30,000 DWT cargo’s for GEMI and acquiring repairs for Indian Navy of INS Sindukranti
division. Now, one ofthe main ship building industries in India is going to emerge into Indian security
forces for Indian Navy Wing as efficient work and faster outputs. HSL is awarded as ISO-9001
certified industry by LLOYD’s register of quality assurance (LRQA) London for construction.
INFRASTRUCTURE DETAILS:

HSL’s yard is spread over an area of 3, 00,000 square meter. Workshops and facilities are
systematically planned and functionally laid out to ensure unidirectional flow of material. The steel
processing facilities consists of a stock yard to hold 30,000 tons of steel modern plate and section
treatment plant gas cutting machines,heavy duty presses self-elevating trucks capable ofhandling
blocks of up to 250 tonnes and large pre-fabrication shops with overheard travelling cranes of
adequate capacity.
The hull construction facility includes a modern covered building dock and three shipways. Cutting,
wedding and assembly of steel to any specification are handled with care and accuracyby skilled
operation, with are continuouslytrained to upgrade theirskills. The long out fitting quay is equipped
with attendant self-contained services and facilities i.e. hull fitting, engineering and electricalshops.
THE DESIGN CAPABILITY:
A remarkable achievement in the field ship design is the development of “HS-Standard flexible
design”acclaimedfor its excellencefor its Hydrodynamiccharacteristics by HSVAship modeltesting
tank established at Hamburg,Germany. Seven, 27000WTbulk carriers of this design were built for
various costumers. HSL’s design capability embraces a wide spectrum of general and special
purpose vessels like medium size bulk carriers up to 70,000 DWT, Product tankers, container
vessels, dredgers, passengers vessels, survey vessels, etc. it is backed up by latest CAD/CAM
software a part from AUTOKON with independentwork stations.
OFFSHORE PLATFORMS:
HSL has emerged as one of the leading manufacturer of Offshore Oil/Gas production platforms
providing advanced technologies and up-to-date facilities. HSL’s offshore facility is geared to take
on offshore projects on turnkey basis covering design, procurement, fabrication, load out and
instillation. Its expertise and quality standard are world class. Over twenty offshore structures
fabricated in HSL’s exclusive yard are in operation at Bombay High, Southern and Eastern regions
of India.
THE INDUSTRIAL STRCTURES AND OTHER DIVERSIFIED AREAS:
With accredited experience and technology absorbed through Shipbuilding, Ship repairs and
offshore platforms coupled with skilled manpower and modern facilities. HSL’s business activities
arenowbeinglargediversified into the manufactureoflargescale plants andstructure suchasplants
and equipment, bridge girders and other steel structures. HSL also offers consultancy services for
design, training, portdevelopmentetc.
THE ORGANISATION:

Hindustan Shipyard Ltd, A public sector understanding under the administrative control of ministry
of Shipyard Govt. of India.
HSL has following divisions:
 Ship building divisions
 Ship repair divisions
 Retrofit divisions
 Offshore platform division
 Structural fabrication division
SHIPBUILDING DIVISIONS:
 Capacity to constructvessels up to 50,000tonnes DWT.
 Two slipways (164*24m) have capacity for construction ofvessels up to 30,000tonnes DWT
 One slipway (140*22.7m) for small crafts.
 Building Dock (247*53*11.25m) has capacity up to 50,000tonnes dead weight.
SHIP REPAIR DIVISION:
It has the following facilities:
 Dry dock (244*38*11.6m)up to 57,000tonnes DWT.
 Wetbasin has the capacity to accommodate for repair.
 HSL’s repair ship developmenthas accomplished maintenance &repairjobs on various
variety of naval vessels including submarines,merchantships and oil rigs.
OFFSHORE PLATFORM DIVISION:
It has been engaged in the constructions of platform, jackets and other related structure. It has well
established and experienced production organization with adequate facilities and is supported by
necessaryexpertise divisions of:
 Planning
 Purchase
 Production
 Q.A&Q.C
STUCTURAL FABRICATION DIVISION:

HSL has diversified its activities into industries structures of:
 Railway bridge girders.
 Pipes of the flow outof dredged materials.
 Steel structure construction for process plants.
ORGANISATION STRUCTURE:
A well-defined organization with horizontal and vertical linkage taken care ofall activities, operations
functions of the HINDUSTAN SHIPYARD. Senior managementpersons in the ranks of executive
directors, General Managers, Deputy Managers and Chief Manager placed in change of various
groups and divisions, the objective behind the division is to make to heads more accountable and
responsible for their decision as well as to raise the output of each team group undertheir control
divisions.
SHIP BUILDING MEHODOLOGY
The construction activities of the ship fall into categories namely,Steel complex and Outfit complex.
The major activities of the Steel complex are processing of steel plates assembly of plates and
elements into fully welded panels, erections alignmentand full welding of these panels on building
berths as complete Hull Survey, pressure tests and launching etc. In the outfit complex installation
of main and auxiliary machinery, piping system ventilation, electrical, communication system,
accommodation works,work survey, tests and trials of equipment,dock trials, sea trials and delivery
to the owners.After the design and drawing are complete ship’s hull form is screwed on the mould
loft wooden floorto the scale developmentofcritical shapes are done.Wooden templates and mark-
ups are made to full size to process the elementofthe ship’s hull.
Certain elements are drawn on films to 1:10 scale in mini loft drawings officers nesting’s elements
thus drawn to 1:10 scale on films are used for cutting elements on electronic tracer type automatic
gas cutting machine to full size.The hull processing shop having a floor 13,700 Sq.mthas four bays
with 10Tand 5T capacities electrical operated overhead travelling cranes fitted with magnetbeam.
Steel plates and sections from steel stock yard are fed to these bays though conveyer system via
magnets (Captivator, Hydro leveler and Driver) mechanic shot blasting machine and sprayed with
primer. The shop is equipped with numberof gas cutting machine mostsophisticated among them
being Computer Numerical Control (CNC) flame cutting machines which cuts simultaneously 4 off
piecesfrom 1/10scale drawingpreparedonspecialpaperin miniloft drawingoffice to full size.Other
elements marked on the Steel plates using the wooden templates prepared in mould loftand cutin
Gas cutting machine. There are hydraulic presses with various capacities and up to maximum
2000tones forming the plates.
Rolling machines, cold frame bending machines, shearing machines, cambering machines,
straightening machines, plate preparation plate, section preparation plant etc. are the important

machines,in the shop, there are assembly shops.One of which is 194.5 27 m and is intended for
the assemblyof panels up to a maximum weightof 45 tones and fitted with one number45Ton and
3 No’s 10Ton each electrically operated overhead travelling cranes attwo levels.
The shop is installed with 80 ton & 40 ton electrically operated overhead traveling cranes. The
addition to assembly of peak panels,air turning and compoundingof units up to 100-150 tons are
done in the shop.Welding is done byautomatic and semiautomatic welding equipmentin addition to
manual welding.
The elements proceeded in the Hull processing shop and Assembly units inspected for their
workmanship ofthe steel complex,dimensionalaccuracybythe quality control on the steel complex
and presented to the classification society surveyor for inspection because theydispatched to block
storage for Assembly Erection.
The Pre Fabrication units (called panels/blocks) are transported to storage area berth from the
assemblyshop by 100 Ton &150 Ton capacity self-elevation & propelling low bed trailers. They can
load and unload themselves without the help of any cranes. Thus the fabrication panels can be
transported without much difficulty.
HSL has three building berth /slipways for construction of ships up to maximum 30,000DWT.These
berths are served by 5 no’s of heavy duty cranes of 35 Tons to 100 Tons capacity of level fluffing
and hammerhead type cranes.Each assemblya crowtype staging are provided inside and outside
the ship under construction on berth. It is surveyed by the surveyors of classification society in
various stages ensuring quality of the structure and weld joints including Non Destructive Testing
.The ship tanks in addition to dry surveyors arepressuretested with airandwater. After the assembly
& inspection,the ship outside hullportion is painted scheme.The launching is being done atpresent
by conventions method with 2 launching ways consisting of timber standing,sliding ways, base and
slip coastgrease applied in between.
Forthe purpose offitting out the ship after launching,the shipyard has an Out fitting quality of 1500
ft. Long and capable of accommodating 3 pioneer of 21500 DWT. The jetty has a 125 ton fixed
hammerhead crane and four level bluffing cranes of 50ton, 10 ton and 5 ton capacity each.Along
the length of the jetty, the out fitting infrastructures like Engineering Department, Plumbing sheet
metal, electrical, carpentry,riggingandblacksmith. Galvanizing andpaintingdepartments andshops
are situated.
All these departments and their shops as well equipped with good numberof machines for the fast
and efficient working.
TRANSPORTATION OF PANELS/UNITS:

There are two self-elevating and propelling low bed trailers (KAMAG make from Germany). One of
100 T and other of 150T for transporting the units from Prefabricate shops to slip ways jetty and
building docks.These trailers are provided with most sophisticated Electronic multi-layer Hydraulic
Steering gearsystem. A coupling arrangementis provided for random operation of both the trailers
for transporting units of order of200T to 250T with one operator from 150 T trailer.
SHIP BUILDING BERTHS:
These are 3 slipways / building available for construction ofvessels of30000DWT.
Area of each –
 Berth No. 2 (140 M long *22.7M wide)
 Berth No. 3 (185 M long *25 M wide)
 Berth No. 4 (185 M long * 25 M wide).

HULL SHOP
In HSL Hull shop is spread over04 bays over an area of 11,152 Sq. m, the shop is equipped with 5
& 10 T EOT cranes, with magnetic pickups in each bay.
The Yards’ hull shop is fairly modern with following facilities:-
(a) Steel stack yard
(b) Plate treatment plant
(c) 04 parallel gas cutting machine
(d) 02 Plasma profile cutting machine and CNC cutting machines
(e) 2000 T, 800T and 500T rolling and bending press
(f) 400T cold frame bending machine
(g) 100T section bending machine
(a) Steel stack yard
Storage capacity of 30,000 Tones spread over an area of 7000 Sq. meters and equipped with 10T,
16TEOT craneswith magneticpickups.In addition, 12Tmobilecranesfor handlingplates& sections
are also available. The plates are stored in the stock yard which is provided by Semi-goliath crane.
This crane unloads the plates from the truck into the stockyard. The required plates are then placed
on the cross transfer-Ι. The plates are then passed through the plate straightening machine to
removedeformation. Theplates then enters onto the crosstransfer- ΙΙ, from herethey aretransferred
on to cross transfer-ΙΙΙ, which is also called as blasting conveyor.
This blasting conveyor carries the plate through the shotblasting machine and priming plant, where
the plate is cleaned from rust and mill scale and primed. This primed plates are then stored till they
are used.
(b) PLATE TREATMENT PLANT:
The plant comprise Captivator, Hydro leveler with dust collector, shot blasting machines for plates
and sections ofeach ofspaces priming machine & 2 nos. roller conveyors.
PLATEPREPARATION: Plate preparation means we will have to prepare the plate for construction.
Plate preparation is required becausewe have gotthe raw steel plates from steel plant, we will have
to prepare them so that they become good for subsequentusage and finally, will be well for the
product- good for the product
(a)Straightening
(b)Residual stress removal
(c)Mill scale removal

(c) CNC PLASMA CUM FLAME CUTTING MACHINE:
The CNC system is especially suited for the control of flame or plasma cutting machines or similar
application, also the punching on the plate can be done with the help ofthis machine.
Direct programmingis madeeasyby meansofkeyboardandT.V. screen.Subroutines,macros,and
parametric programming resultin shortbutpowerful programs.Alternatively, remote programming is
possible with the program being stored on convectionalpaper(or optionally on cassettes). The third
possibility is the creation of program on a computer.The program data can be then transferred into
the control via, direct or indirectdata link. In all cases, programs can be edited on the machine.
The control comprisesofanoperators front paneland a cardrack,which are connectedbymulti way
cables and are intended for corporation in the machine builders control cabinet.
Each plug in card has one or a few specific tasks, which make for easy troubleshooting specially in
connection with the status messages and the diagnostic display on the screen.
During operation, the screen shows the current absolute position of both axes, the current active
block, the active auxiliary function and text messages, which are controlled in the program.
PLASMA
When a gas is heated to a high temperature, its molecular state changes to the atomic, further
healthy splits these atoms to the ionic state capableofconductingelectricity. The forth state ofmatter
is called “PLASMA” [the outer 3 being solid, liquid and gaseous].Temperature at the core of this
plasma exceeds 30000’c. The aura around the sun is an example ofplasma.
Gas mixtures like argon and hydrogen used in producing gas plasma are both expensive a
hazardous so compressed air is used. A plasma jet is obtained by passing a gas through a
constricted electric are and letting it escape through the office in the nozzle athigh velocity. Plasma
are processors are used for welding, cutting etc.
ADVANTAGE OF PLASMA ARC CUTTING
1) It cuts carbon steel up to 10 times faster than oxy-fuel cutting, with equal quality more
economically.
2) It leaves a narrower Kerf.
3) Plasma cutting being primarily a melting process can cutany metal.
4) Arc plasma torches give the highest temperature available from many practicable sources. The
energy seems to be unlimited in this method.

(d) PLATE ROLLING MACHINE:
Plate rolling machines is also referred to plate straightening machine.It also used for rolling steel
plates to the curvature required.By adjusting the height of the top roller and the center distance of
the bottom rollers, large or small radius bends can be made. The diameter of the bottom roller is
300mm and top roller is 360mm. the day light or the vertical distance between two rollers 460mm
maximum.
Blockhead flanging is also possible when the machine is fitted with a flanging barand bottom block.
Control of machine is by manuals setting and operations carried outfrom a console located nearby.
Arrangements are made for removing the rolled plate by realizing the top roller and bearing. The
plates on the machines are handled jib cranes mounted on frame ofthe rolled machines.
(e) FRAME BENDING MACHINES:
Ship frames are shaped by cold bending on hydraulically powered machines. The frames (bulb
angle) are held in position by three clamps in line. The main ram then more the outer two clamps
forward or backward to bend the frame to the desired shape.

As perthe values given by the design departmentfor bending the frame. The inverse curve is drawn
in chalk ona straightframe andframe is bentuntil the chalk line becomesstraightona curved frame.
This way the correctframe curvature can be obtained.
(f) PLATES STRAIGHTENING ROLLS:
Plate straightening or levelling is achieved in the yard by using a plate rolling machine.It consists of
seven large rollers four on top and three at bottom. The bottom and rollers being driven and top one
idling. Three heights of the top rollers can be adjusted for heightindependently at each end and the
bottom rollers have fixed Centre’s.
The plate fed through with upper and lower rollers spaced at its thickness and is subsequently
straightened and obtained on other side. The rollers are driven by D.C motor.
(g) PORTABLE PLATE EDGE BEVELING MACHINE:
Portable plate edge beveling machine is an electrically powered rotary shearwhich is used for wide
variety ofplates edges,usuallyusedforpurposeofweldjoint preparation.This machinearedesigned
for man operation and is capable of beveling straight or circular plate section at a speed of
approximately 305cm/min.it is also capable for multiphase beveling for largerbevels that cannotbe
accomplished in single pass. An easy adjustment is provided for altering the depth and angle of
bevel.
This machine is capable ofsupporting its own weight while beveling horizontal plate. This standard
machine is equipped with a spring loaded coasterassemblythatallows the machine to roll along the
floor, or runway, during the beveling operation. The adjustable beveling head enables the beveling
of angles 22.5degree through 55degree.
The machine comes with a complete tool box which includes the bevel angle pins 22.5 , 30 , 37.5 ,
45 and 55 as well as all of the necessarywrenches and hexagonalkeys that are required to make
adjustments to the machine.

PRE – FABRICATION
‘Prefabrication is a manufacturing process,generally taking place at a specialized facility, in which
various materials are joined to form a componentpartofthe final installation’.
Prefabrication is defined as “1. To fabricate or construct beforehand. 2. To manufacture in
standardized parts or section ready for rapid assembly and erection.”
Instead of starting in the dry dock and building the ship from the ground up, sub-assemblies are
fabricated away from the final assembly site. The process of constructing a ship relies heavily on
prefabrication to speed up the fabrication process.The ship is considered in 4 main stages “part,
block, mega block, ship’, each ofthese stages has a series ofdistinct tasks that are performed and
the breakdown ofthe ship into sub-assemblies enables manyoperations to run simultaneously. The
dry dock can be considered the site, but only a fraction of the total work occurs within the dry dock,
allowing many operations to be done simultaneously, which speeds up the process.
To join these plates as perthe groovesandedgepreparationwhichareoutathullshopfrom previous
stage the welding will be carried out in the form of grooves as per the required welding process
(SAW, MIG, and MAG) and proceduresby qualified welders with suitable selected electrodes and
welding equipment.
Pre fabrication shops are existing adjacentto hull shop atthe eastside which consists of four areas
A1, A2, A3 and A4 in two huge buildings consisting all required facilities and infrastructure
arrangementto constructand fabricate blocks up to 150 tonnes in weight.
All the welders of the pre fabrication as well as other departments of shipyard are well qualified in all
positions of welding as per the classification society rules and as stipulated in international welding
practice and rules.It is observed thatthe quality control departmentplays their role during the above
process ofwelding and inspectatevery stage to correctthem in time.
Once the welding inspection is completed for a block it will be programmed for third party
classification surveyors’ inspection along the with the owners’ representative inspection by Quality
Control department. If anydefect/problem is identified during their survey, the same will be attended
andrectified. Finally QCwill makearrangementsforfinal inspectionto clearthe productat fabrication
level to send them to nextstage of work atHull berth and erection departments.
During the inspection stages of above fit-ups and welding if any unsolved problem is identified the
same will be recorded in NCRR (Non Conformity Reportand Reservation) format numberQA – R –
01 and circulate to all the concerned design office and classification societies to resolve them further
rectification.

All the butt joints of the block will be radio graphed randomlybefore the blocks are sentto Hull berth.
Radiographs will be shown to classification society surveyors and owner’s representatives for their
approvals.
After of all works including Q.C inspections survey by classification societies and owner’s
representatives, the blocks will be sent for the surface cleaning by mechanicalcleaning and sand
blasting methods and painted with coats of as perthe painting scheme before they are handed over
to nextproduction departmenti.e. Hull berth/Erection department.
A1- SUB ASSEMBLY Frame fabrication
The frame / elementare drawn from hull shop according to the drawings. These frames are
Strengthened with the help of stiffening member (flat bars).
PROCESS CHART
1. Frames are drawn from the hull shop
2. Frames are stiffened
3. Stored in A1 area
4. Transported to A2 area
BRACKETS
These are stiffening members in each section to resistloads and actas a supporting member.
PROCESS CHART
1. Drawn from hull shop
2. Laying ofbrackets
3. Tacking
4. Inspection
5. Welding
6. Inspection
7. Storage
8. Transportation
COMBINING PLATES:
These are the supporting members for the frame to withstand the varying loads. These may vary
according to its positions. Mostly in wing tank frame sub-assemblies these combining plates are
used.

PROCESS CHART
2. Laying of combining plates
3. Tacking
4. Inspection
5. Welding
6. Inspection
7. Storage
8. Transportation
PLATE PREPARATION:
Inner shell plate, outer shell, upperduck,sloping plates are all above tacked and welded according
to drawing and the given dimensions.
PROCESS CHART
1. Draw from hull shop
2. Laying ofplate preparation
3. Tacking
4. Inspection
5. Welding
6. Storage
7. Transportation
STRINGERS
These are of same use as that offrames but vary in the location. These are also drawn from the hull
shop according to the drawings. These are stiffened with the help ofstiffening members.
PROCESS CHART
2. Stiffeners or flat bars are tacked
3. Full welding is done
4. Storage in A1 area
5. Transportto A2 area

A2 – MAIN ASSEMBLY
Assembly
Assemblyis anyprocessthat takes a numberofsteel pieceparts, or largerstructures, andcombines
them into a larger structure. Forvery large ships,assembly consists of a numberof stages, putting
together increasingly larger elements of the ship. The number of stages varies between shipyards
and especially varies with ship size. There is assemblyshops.To maintain production engineering
standards,a conceptof‘palletization’ has been developed wherebythe piece parts for that zone are
generated at the CAD/CAM stage, bought in and/or fabricated, etc., and made available at the
workstation when the particular assembly is ready to receive them.
An ‘open top’ arrangement for blocks or smaller ships being outfitted under cover can facilitate
installation of the items and modules.
Superstructure blocks are frequently fabricated separately and pre-outfitted with accommodation
before erectionas acomplete unit. Modularcabinunits ate a commonfeature ofmodernshipbuilding,
some companies specializing in their production. An accommodation block must be specifically
designedforsuch modulesandthe sequenceofmoduleaccessand placementin the block carefully
planned.
A2 is the main area where main assemblyofthe paneltakes place.Here the outputof the prepared
plates from A1 area will be taken as input to A2 area. The bulb angles wherever necessary are
located and are erected. Now, tacking is made primarily, and then it is followed by full welding.
Stringers will be erected, tacked and fully welded.Then,frames are added to the which tacking and
full weldingis performed,outershellbulbanglesare erectedand then followed by tacking (i.e. proper
allocation) and locking is made.Closing plate (outershell) is erected on the outershell bulb.Tacking
of the bulb angles. Turning legs will be tacked and welded.
PROCESS CHART
1. From A1 area
2. Plate preparation are broughtto A2
3. Loft marking will be done
4. Bulb angles are erected
5. Tacking and full welding will be done
6. Inspection
7. Welding
8. Stringers will be erected
9. Tacking
10. Welding

11. Frames are added tacking, welded
12. Erected and locked
13. Plates are closed and welded
14. Turning legs are welded
15. Transported to A3 area
A3 – UNITIZATION UNIT
When any paneland the block assemblies are complete there will be some time buffer before their
erection at the building berth, building dock,orwithin the building hallto allow for anymishaps in the
production schedule.Stowage is generally adjacentto the berth, dock or building hall, and will vary
with size according to the yard’s practice, some yards storing a large number of units before
transferring them to the berth or dock for erection in order to cutthe berth/dock time to a minimum.
Sequences oferection for any particular ship vary for shipyard to shipyard and depend on a number
of factors. Experience ofprevious shop erection schedules and difficulties given the yard’s physical
and equipment constraints leads to standard practices being established. These are taken into
considerationatthe structural designstage,as are the desirability ofminimizing position welding and
fairing.
In general,it is common practice to make a start in the region ofthe machineryspaces aft, obviously
working from the bottom upwards, and also forward and aft.
For an established medium-sized yard with building berth or hall having modest crane age, typical
erection sequences for a general cargo ship, a large double-hull oil tanker, and bulk carrier are
shown.
PROCESS
1. The panels broughtfrom A2 are reversed
2. Two individual main assemblies/blocks are aligned together
3. Tracking ofboth plates is performed
4. Now, fit-up survey is offered for quality control
5. Necessary clearance certificate will be issued by quality control for welding
6. Full welding will be done
7. Dry survey will be offered for quality control
8. Then, if there are any defects or remarks in the survey will be rectified according to the marks
sheets
9. Erection lugs will be tacked and full weld for erection
10. Finally, the prepared panel is sentfor erection.

A4 – HATCH COVER
The purpose and function of a hatch cover and its coamings is to prevent ingress of water into a
cargo hold after opening has been cut in the deck for cargo access. Hatch covers are a movable
structure designed to a weather tightstandard.
HATCH COVER CONSTRUCTION:
Typically hatch covers are light weight steel grillages. Modern design methods using finite element
technology enable more efficient material distribution which results in lighter (thinner) structures.
Construction from high tensile steel results in even thinner plate being used.For this reason these
light weight structures must be “handled with care”. Prevention of corrosion is essential – safety
margins are finite.
Failure to maintain hatch covers correctly can lead to physical losses ofa cover in extreme weather
and hold flooding and possible foundering. Minor leakage can cause cargo damage and, if over a
prolonged period,damageto the ship’s internal structure. Long – term structural declaim can lead to
structural collapse and total loss.

HULL BERTH
Hull berth departmentconsists of three slipways each consists of 192 X 26.6 m, 195 X 26.6 m and
140 X 22.7 m respectively and a covered building dock with intermediate gate facility of size 24 X 53
X 11.25 m depth for a capacity of building ships up to 50,000 dwt. The building dock has two over-
head cranes, of which one is 150 tons capacity and the other is 100 tons capacity. Adjacent to
building dock there is a wet basin of size 22.5 X 167.5 X 14 m depth where ships can be repaired
and outfit works can be carried out while the vessels are afloat. There is a dry dock with a size of
244 X 38 X 11.6 m depth for the repairs ofthe ships up to 50,000 dwt.
There are movable cranes ofcapacities 45 tons, 60 tons and 100 tons in between building dock and
berth.
PROCESS
The main activity at hull berth is joining ofthe ships structural blocks in an ordergiven in the drawing
to form a ship after consolidation of all the blocks, which are supplied from the pre fabrication
department.
Initially all the ship lines are drawn on the floor like center lines, buttock lines and on over the lines
the center keel blocks, side bilge blocks and other supporting shores are provided stage by stage
during the erection and alignmentofthe blocks.This activity is carried outin building dock as wellas
on the slipways while construction of at places accordingly.
During the process of the ship construction and erection stage Q.C inspects atevery stage offit-ups
of the blocks after alignmentand welding ofthe joints after consolidation and organize third party
Inspection by class and owner’s representatives, MMD inspection. The data will be recorded in the
documents as follows:
1. Inspection record sheetfor panel jointfit – up aterection QA – E – 02
2. Record sheetfor keel sighting QA – E – 02
3. Dimensional / alignmentcheck sheetfor QA – E – 03
4. Inspection record sheetfor keel and bilge blocks atberth/building dock QA – E – 02
5. Inspection record sheetfor dry survey of panel butt/ space/tank aterection QA–F-01
6. Inspection record sheetfor survey of pressure testQA – F – 02
7. Inspection record sheetfor seatQA – G – 01
8. Inspection record sheetfor W.T. door / hatch covers QA – G – 02
9. Inspection record sheetfor loose tanks QA – G- 03

After completion of the works and remarks ofsurveys the main joints oftanks, bulkheads,decks and
shell joints will be hose tested / pressure tested with air or hydraulically as per testing requirement.
If any leak is found the same will be rectified and accordinglyclass certificates will be issued for final
clearance ofthe spaces.
At erection stage the rudderand propellerwith propeller with propeller shaftare fitted with in the ship
before the ship floats in the water.
The ship,built in building dock is floated by allowing the sea water in to the building dock.The ships
on the slipways are launched into sea channelby providing launching ways below the ship on the
slipways. After floating / launching the vesselwill go to sea channelatoutfitting quay,which is 460m
long at the north side of the shipyard. Where in the sea channel 3 ships of 50,000 DWT can be
attended for outfit works by all the working / production departments like blacksmith, joining and
carpentering, sheet metal, plumbing department, electrical department, engineering department,
rigging department, painting departmentetc.
Quality control departmentwill play vital role duringthe progressofabove outfit works alsoandfinally
the ship will undergo test and trials at jetty called basin trials and sea trails to see the performance
of the ship in working condition. Where the quality control will record all the data during the basin
trials and sea trials and get approvals from the third party classification societies like IRS, ABS and
owner’s representatives and surveyors of MMD. After the approvals the ship will be handled overto
owners.
The testing procedures for the erection / hull berth departmentare
1. Leak test
2. Hose test
3. Pressure test
4. Pressure test with air.
Erection Sequence
The assembly stage involves pre-fabricating plate or structural sections in suitable sizes for pre-
erection into blocks or partblocks.The erection stage involves moving the blocks orpartblocks to a
predeterminedlocation within a dry dockfor final erection andwelding.The final stage in the building
of a hull structure involves transferring block fabrications to a dry dock where the units are located in
a predetermined position and erected and welded into a hull structure. Painting of the structure is
carried outat all stages from pre-assembled, block assembly and final erection and welding.
Joining ship sections afloat:
Some large size of bulk carriers and tanker, it is found some shipyard with restricted facilities like
short berth, building dock,building ships in two halves and joining these afloat. These two sections

may be pulled by shackles, and accurate optical instruments used for alignment. One method is
coffer dam is introduced in way of joint, a caisson is broughtup against ship hull, cofferdam and
caisson are pumped dryand it is necessaryto shift ballast in fore and aft sections. After welding, x-
ray of weld is to be done. A similar method use of rubber‘U’ form ring rather than a caisson which
need modification for each ship size. If dry dock is available, the rest of welding could be taken up.
Typical block erection for a Cargo Ship:

PLUMBING DEPARTMENT
Everyone knows aboutthe effect of corrosion on a ship’s hull, but few people considerthe effect of
corrosion on piping. Pipes pose a hidden danger, a danger thatis often neglected.
Pipes are silent ‘workers’, conveying fluids or allowing air to enter or to leave a space and are the
meansthroughwhich many controlsystems operate.They go unnoticeduntil pipefailure occursand
a machine stops operating, a space floods or oil is spilled. Pipes penetrate almost every enclosed
space,as well as the shellaboveand belowthe waterline, andthe weatherdeck.Thereis no system
on a ship thathas such enormous potential to cause fire, pollution, flooding or even total loss.
The majority of ships’ pipes are constructed of ferrous material, which comes underattack from all
forms of corrosion.As a ship ages,so does the piping system. Maintenance is not always easy, as
pipes, unlike the hull, are difficult to examine because of their number and inaccessibility. It is
practically impossible to maintain them internally and it is sometimes difficult to maintain a pipe’s
external surface, where most corrosion usually occurs. As a result, pipes can receive minimal
maintenance,and pipe failure is often the result. There is a cautionary tale aboutan operator who
was once asked, “When is itnecessary to replace a pipe?”His telling reply was, “when itbursts.”
BASIC INFORMATION
The majority of ships’ pipes are made of mild steel. Flow rate, viscosity and pressure of the fluid
being carried determine a pipe’s diameter. Pipes in areas of a ship where there is a risk of gas
explosion are earthed,because flowcan build up a static electricity charge.Bonding strips are used
across flanged joints to maintain conductivity.
Pipes that pass through other compartments pose potential subdivision problems,especially open-
ended pipes.Compression joints are not normally fitted on pipes carrying flammable liquids. Pipes
are held in place by supports, hangers or clips that prevent movement from shock loads and
vibration. Pipe failure is common when pipes are allowed to vibrate.
Goodpipe alignmentduringassemblyofa piperun prevents ‘locked-in’stress • the useof expansion
(mechanical)joints,such as dresser-type joints, is restricted to locations where pipes move because
of thermal expansion orcontraction, or ship bending.Classification society rules prohibit the use of
expansionjointsfor the connectionofcargopipingin chemicaltankers.The mostcommonexpansion
joints are compression couplings or slip-on joints.
Pipes can be joined by butt-welding, with flange connections or mechanicaljoints. The number of
flange connections allowed in the cargo pipes of a chemical tanker is strictly controlled by
classification society rules.

Visualchecks ofthe externalsurfaces ofa pipe will notalways indicate its condition because itcould
be internally corroded and have reduced wall thickness
Pipes passing through tanks containing certain liquids can be exposed to corrosive attack on both
surfaces.Mosterosion and consequentinternalthinning happens wherethe pipe changesdirection,
commonlyat elbows and T-sections. A pressure testof 1.5 times design pressure is a strength test;
a test at the design pressure is a tightness test. Pressure testing can reveal small cracks and pin
holesthat may notbe obviousfrom a visual examination.Pipes carrying flammable substanceshave
as few joints as possible and these are shielded to prevent leaks coming into contact with hot
surfaces.
PIPES AND CLASSIFICATION SOCIETIES
Ship classification societies publishregulations for the designandinstallation of shippiping systems,
defining strength, materials, system requirements (routing), testing procedures and surveying
requirements. Classification society rules require ships’ pipes to be inspected during annual,
intermediate and renewal surveys.
Annual surveys
Pipes are checked visually. A pressure test is done if there is any doubtas to their integrity, and
annually on a tanker’s cargo system. Pipes passing through or connecting to the shell plating are
subjectto particular attention.
Intermediate surveys
The requirements are similar to those applying to annual surveys.
Renewal surveys
Pipes are checked visually and hammer-tested, with some also being pressure-tested.
The surveyor will select which pipes are to be pressure-tested. Pipes carrying superheated steam,
the fire main and those that are part of a fixed fire extinguishing system should always be tested.
Some pipes maybe selected for dismantling and internal inspection.
Ship’s Piping systems include –
Bilge system
The bilge system is used to remove smallquantities offluid that have leaked orcondensed into a dry
space. The system serves the machinery spaces,cargo holds, cofferdams, voids, stores, tunnels
and pump rooms. Each space has its own piping butthe pump is likely to be shared.

Ballast system
Ballast is taken on to increase a ship’s draught, particularly the stern draught, when sailing without
cargo.On a dry cargo or passengership,the ballastsystem is commonlyoperated from the engine
room. On a tanker, the entire ballast system is commonly located in the cargo area and is operated
from a pump room and cargo control room.
Firefighting systems
Piping is used extensively throughouta ship for fire control purposes.The specific featuresof ships’
firefighting equipment are governed by the International Convention for the Safetyof Life at Sea
(SOLAS). ManySOLAS requirements have been incorporated into classification society rules.They
include:
 Fire main
 Sprinkler systems
 Water spray systems
 Deck water spray systems
 CO2 piping
 High expansion foam
 Low expansion foam
 Dry powder
Pipes carrying fuel oil and flammable liquids
There are two principal types of pipes that carry fuel and they are categorized by the pressure the
pipe is designed to withstand. Low-pressure pipes are primarily used to move fuel from a storage
tank to a service tank and via feed pump on to injection pumps. High-pressure pipes are used to
deliver fuel from an injection pump to an engine combustion chamber.
Ship’s fuel is usuallystored in double-bottomtanks,deeptanks,andside bunkertanks,settling tanks
or service tanks. Piping between a service tank and a fuel transfer or booster pump is rated as low
pressure. However, between each pumping stage, pressure increases.
It is a mistake to assume that even if a pipe’s pressure is relatively low, fuel will not spray from a
crack or small hole. A small pin hole in a fuel pipe can atomize leaking fuel even at low pressure,
creating a highly volatile mixture of air and fuel.
Low pressure fuel pipes, particularly on diesel engines, should be regularly checked for signs of
leakagein wayofconnectionsand fretting againstotherpipingorobjects. Pipe clampsecurity should
be checked closely.

Pipes from fuel tanks can pass through ballast tanks, and pipes serving ballast tanks can pass
through fuel tanks. Because ofpollution risks, classification societies have stringent rules restricting
the length of any oil pipe passing through a ballast tank; it must be short, have increased wall
thicknessandstrongerflangesandsubjectedto morefrequentinspectionsandtesting duringsurvey.
SOLAS includes requirements for fire safety in engine rooms. In particular, specialdouble-skinned
pipes must be used to deliver fuel to engine combustion chambers.These are made of low carbon
steel alloys and operate at high pressures between 150 and 900 bar. Double skins are necessary
because pipe fracture will cause fuel to spray in a fine aerosol.Fuelwill ignite on contact with a hot
surface, such as a turbochargercasing or exhaustpipe. The second skin is to guard againstdirect
spraying.The pipe is designed so that fuel will be contained in the annularspace between the outer
skin and the main pipe,and will drain into a collecting tank fitted with a high-level fuel leakage alarm.
Low-pressure lubricating and fuel oil pipes passing close to a hot surface must be secured against
the possibility of oil spraying from a flange. To prevent this danger,the flange is usually taped. In
addition, and whenever possible, the pipes are routed clear of hot surfaces. Similarly, to prevent
leaking oil falling onto a hot surface,such pipes should neverbe allowed to run above a hotsurface.
Regularthermo graphic surveys of hot surfaces will identify risk areas that are hotenough to ignite
spraying or leaking fuel. Preventive measures to be taken include additional lagging,and spray or
drip shields.
Fuel oil transfer pipes are usually of mild steel and may corrode.The calculation for minimum wall
thickness includes a smallallowance forcorrosion.As a pipe ages and corrodes,leakagecan occur.
Inspection programmes should concentrate on identifying worn or corroded pipes.
Engine cooling systems
Water carried in pipes is used to cool machinery. The main engine is cooled by two separate but
linked systems: an open system in which water is taken from and returned to the sea (sea-to-sea)
seawater cooling, and a closed system where freshwater is circulated around an engine casing
(freshwater cooling). Freshwater is used to cool machinery directly, whereas seawater is used to
coolfresh water passing through a heatexchanger.Manyengine room systems also use sea water
to cool oil, condense steam and even produce drinking water.
The particular feature of any engine room cooling system is continuous fluid flow. Fluid in motion
causes abrasive corrosion and erosion.To reduce the effects of turbulent flows, seawater systems
incorporate large diameter mild steel pipes, the ends of which open to the sea through sea chests
where gate valves are fitted. If a seawatercooling pipe bursts,both suction and discharge valves will
have to beclosedto preventengineroomflooding.In orderto makesurethe valves operatecorrectly
when needed,open and close them at regular, say monthly, intervals. Ensure that all engine room
personnel are familiar with the location and isolation ofthe main sea inletvalves and overboard.
Seawater pipes are usually mild steel, but other materials such as galvanized steel, copper,copper
alloys and aluminum bronze (Yorcalbro1)are also used.Seawater pipes fabricated from Yorcalbro

generally have a sacrificial section made from mild steel to ensure that galvanic corrosion attacks
only the sacrificial pipe. Sacrificial sections as well as sacrificial anodes are also designed to limit
galvanic corrosion action from metallic material other than Yorcalbro.These sections ofpipe should
be regularly inspected and renewed.
Air and sounding pipes
Air pipes allowan enclosed spaceto ‘breathe’. They preventover- or under-pressureby letting air in
or out of the space when liquid is pumped in or out, or when temperature changes causegases or
liquid to expand or contract. Cargo holds are ventilated by air pipes passing through the weather
deckandthese are fitted with self-closing watertight covers (headers).This is a loadline requirement
Sounding pipes are small-bore mild steel pipes used to allow the measuring equipmentto enter a
tank ora space.The pipe allows a tape orsounding rod to pass through to the bottom of a tank, hold
or space.Deck sounding pipes pass through the weatherdeck and are fitted with screw-down caps.
Soundingpipesforengineroom double-bottom tanks are fitted with counterweightself-closing cocks.
It is imperative that sounding pipe caps orcocks be keptshut and well maintained.Sounding pipes
are a potentially dangerous source ofprogressive flooding. An engine room can be flooded through
an opensoundingpipeifa ship’sbottom is holed.A cargohold canbe flooded throughan opendeck
soundingpipewhenwater is washedondeckin heavyweather. Holesin weatherdeckair pipesalso
cause hold flooding during heavy weather.
Air and sounding pipes are normally constructed of mild steel. Normally these pipes do not come
into contact with liquid, either inside or outside. The size of an air pipe serving a tank is determined
by comparison of the pipe’s cross-section area with that of the pipe that will fill or empty the tank.
This calculation, by the designer, is to avoid the risk of over- or under-pressure.Air and sounding
pipes that pass through other compartments are a potential source of progressive flooding. It is
difficult to inspectair and sounding pipes located inside cargo spacesorballasttanks. However, the
integrity of air pipes for ballast tanks can be checked byoverfilling the tanks. Pipes passing through
a dry cargo space mustbe inspected for damage caused by contactwith grabs, bulldozers, etc. Itis
advisable to open and inspectair pipe headers on the exposed weatherdeck once every five years
following the first special survey. This is necessarybecause corrosion on the inside of an air pipe
headerwill not be noticeable externally. Screw-down caps are fitted to the top of sounding pipes.
These caps should never be mislaid or replaced with wooden plugs. To extend the life of air pipe
headers,they should be galvanized.The self-closing cocks on engine room sounding pipes should
never be tied open.
Pipe Design
Classification societies publish rules for design and fabrication of ship’s piping. The rules consider
how the pipe will be used, the fluid conveyed, materials for construction, and welding and test
procedures. Ship’s piping is grouped into three categories, each of which has different technical
requirements.

Class I pipes have to comply with the most stringent rules. They include fuel oil pipes operating
above 16 bar pressure or above 150°C, and steam pipes operating above 16 bar or where the
temperature exceeds 300°C.
Class II pipes are subjectto more moderate rule requirements.
Class III pipes have the lowest requirements.They include fuel pipes that operate at or below7 bar
pressure and 60°C.
During design of piping systems, fluid temperature, pressure and the type of fluid conveyed have to
be considered.
Materials
Mostpipesare madeofmild steel. But pipesthat carrydangerouschemicalsorparticularly corrosive
fluids are manufactured from stainless steel. Some chemicals can be carried only in stainless steel
cargo tanks and pipes. Some small seawater pipes are copper. Glass reinforced epoxy (GRE) is
often usedfor ballastandbrinepipes.Sanitary pipingmay bemadefrom plastic, usingplastic welded
joints. The use of plastic pipes elsewhere in a system is restricted because ofthe requirement to
passa standard test for fire-resistance. It is notusualfor plastic pipes to be constructed in a way that
will enable them to pass the moststringent, level 1, fire test.
There are three levels offire endurance test.In each case,the procedure is the same,the difference
beingthe duration ofthe test andthe presence,orotherwise,offluid insidethe pipe.Atlevel 1 testing,
the endurance period is one hour with a dry pipe. It is 30 minutes with a dry pipe at level 2 and 30
minutes with a wet pipe atlevel 3.Passing the level 1 fire test is the higheststandard:if plastic pipes
areto be used,the fire-resistance rating andclassification society rule requirementsmustbechecked
first.
Pipe dimensions
The required diameter of a pipe depends on the minimum cross-section area necessary to allow
passage of a fluid of given viscosity at a given velocity. A pipe’s wall thickness depends on the
pressure, the temperature of the fluid conveyed and construction materials. Pipes that operate at
high pressure,such as hydraulic pipes, have thick walls, while pipes that operate at low pressure,
such as ballastwater pipes, can be designed to classification society ‘minimum thickness’.
During design calculations,an allowance for corrosion is factored into the wall thickness. However,
the calculatedwall thicknesscanneverbeless than rule minimumthickness.It is a mistake to believe
that the corrosion allowance is enough to prevent failure from uniform corrosion before the pipe is
‘design life-expired’.

Pipes passing through tanks must have thicker walls. An allowance for corrosion is added to the
pipe’s wall thickness to allow for possible external and internal corrosion.
Connection to pumps
Pipes are connected to pumps by flanges. Flanges are a potential weak point in a piping system.
Occasionally, and to provide the correct pressure from a pump, a calibration orifice is fitted in the
delivery piping.This canresultin turbulentfluid flow andcauseabrasivecorrosionorerosion.Welded
flanges are prone to accelerated corrosion in the weld metal or in the heat-affected zone.Pipes in
wet areas where corrosion is likely need to be examined atregular intervals.
Pipe joints
The preferred method for connecting two lengths of steel pipe, whether a straight, elbow or T-joint,
is with a flange. With the possible exception of small-bore pipes in low-pressure systems, pipes are
not normally connected by threaded joints. Mechanical, expansion or sliding joints are fitted in
longitudinal pipes to allow the pipe to move when a ship bends and flexes, or to cater for thermal
expansion. Expansion joints are not fitted where there is regularly high stress, nor are they used
inside cargo holds or tanks. Expansion joints should never be used as a permanentconnection for
corroded pipes after a temporary repair.
Classification society rules define which piping systems to use and the positions in which expansion
joints can be fitted. Only approved expansion joints are allowed.
Clips and supports
Clips and supports are used to hold pipes in position and to prevent movement or vibration. A
vibrating pipe can ‘work harden’ and fail. Pipes can fracture when there is insufficientsupport.
There are no hard and fast rules about the numberof clips required in a length of pipe as this will
depend on the pipe’s diameter, length, position and the density of fluid conveyed.The contact area
at the surface of the pipe requires protection. Failures often occur as a result of mechanicalwear
when the clip loosens or a clip supporting weld fractures, allowing the pipe to move. Inspection
procedures mustbe designed to ensure that all clips are checked regularly, including those hidden
from sight behind insulation or underengine room floor plates. Special attention should be paid to
clips in concealed places.
Valves
Valves are fitted to isolate sections of pipe and will typically be found at suction points, crossovers,
feed lines, delivery lines and where pipes need to be removed. Valves connected to the shell are
flanged and made of steel or other ductile material. Grey or nodularcast iron cannot be used for

boiler blow-down valves, for valves fitted to fuel oil or lubricating oil tanks, or for shell valves. Shell
valves should be tested regularly, on a monthly basis,by opening and closing them and lubricating
the valve spindle depending on the design of the spindle sealing.Marking valve handles with high-
visibility paintwill help with identification during an emergency.
Cast iron valves have a service life shorter than those made from cast steel. Consequently, they
need careful examination during a special survey.
Causes of Pipe Failure
Pipes have a hard life: they carry abrasive and corrosive fluids; they are exposed to atmospheric
corrosion and to general wear and tear; they sometimes operate at extremely high and low
temperatures. The mostcommon cause ofpipe failure is corrosion-induced weakness.
Pipes corrode internally and externally. Internally, they may be affected by erosion, uniform and
abrasive corrosion, fatigue and galvanic action. Externally, corrosion is caused mainly by
atmospheric conditions, but pipes can corrode locally where liquids drip onto them or erode where
clamps have loosened and fretting occurs. Always look for early signs of fretting on piping around
clamp fixings by checking for rustor black dust.
Types of corrosions thataffect the life of a piping system –
 Uniform Corrosion
 Pitting Corrosion
 Galvanic Corrosion
 Graphitic Corrosion
Dealing with Pipe failure
It is not always practicable to examine every pipe on a ship, which means that pipe failure is always
a possibility.
If a pipe fails, the following action should be taken:
• switch off relevant pumps;isolate the affected section of pipe by closing valves or by fitting blank
flanges.
• investigate the source ofthe leakage and make a temporary repair by binding or clamping.
At the first opportunity, have the pipe repaired or renewed by a specialistrepair shop.
• avoid getting electrical equipmentwet. If electrical equipmentis wet, take care to avoid electric
shock hazards. Switch offelectrical equipment.

• If there is leakage from a fuel, lubricating or hydraulic pipe, use absorbentmaterial to soak up the
loose oil. Oil is both a safety and a pollution hazard. Fuel spraying from a fractured pipe into an
enclosed space, or onto a hotsurface, is an extremely dangerous fire hazard.
• If cargo piping failure happens on a gas carrier or on a chemicaltanker, take measures to avoid
vapor inhalation or skin contact. A significant escape of flammable gas from cargo piping presents
an extreme explosion hazard,especiallyif the gas gets into the accommodation.If liquid gas leaks
and pools onto deck plating, it will induce super cold shock stress cracking that may result in
catastrophic failure.
• failure of a pipe that connects directly to the ship’s shell can result in serious flooding, especially if
the connectionis located belowthe waterline or in the engineroom,becausemostships arenotable
to survive engineroomflooding.It is therefore essentialto makesurethat both suction anddischarge
valves can be closed, and that they are leak-free. Ensure that emergencybilge suction valves are
free and thatcrew are familiar with emergency bilge valve operating procedures.
• Any pipe failure on board ship is to be assessed and the companies ISM procedures followed.
• Class implications – class mustbe informed ifin any doubtwith the location of the pipe failure.
Pipe Repair
Pipes that fail are not normally repaired,they are replaced.If there is a need for local repair, then
treat it as a temporary repair.
• Temporaryrepairs can be made by using binding and rubber,cementboxes,rings and clamps,or
plastic resin. Wooden plugs in conjunction with binding are occasionally used to plug a holed low-
pressure water pipe butmustnever be used on steam piping
• Permanent repairs usually involve the removal and replacement of a length of piping. Welded
doublers are not acceptable as a permanentrepair. Rememberthat welding a corrosion-protected
pipe will damage the pipe’s internal protective coating and cause accelerated corrosion.
• A permanentrepair may only be done using material approved by the classification society.
The society’s rules will require the repair to be examined and approved by its surveyor.
• After makingrepairs,do a pressuretest anda non-destructive test of anywelded connection,using
the dye penetration procedure
• After completing any repair, refit pipe supports or clips. Use additional supports if the pipe moves
or vibrates.

• replace sprayshields on pipes that carry flammable liquids, especiallyif the pipe is located neara
hot surface
• replace or renewlagging or cladding that has been removed before repair. Ensure that the risk of
burns and fire is minimized
• Slag can fall inside pipes joined by welding and cause a blockage or clog valve seats. Flush the
pipe before use.
• After repairing lubricating oil or hydraulic pipes,seek the equipmentmaker’s advice on the care of
oil and filters.
Emergency repairs
When a pipe fails in service, the only remedymay be to carry outa temporary, emergencyrepairto
ensure the safety of personnel, the environmentand the ship’s cargo.
Pressure Test Procedure
A hydraulic pressure testis a straightforward shipboard operation.
Follow these guidelines:
1. Obtain the relevant permit to work and carry out a risk assessmentbefore starting work on any
pipe.
2. Isolate the area where piping is to be tested.
3. Fill piping with water, taking care to eliminate all possible airpockets before raising the pressure.
4. increase the pressure in the pipes slowly, making sure to avoid shock loading. Watch out for
problems as the pressure increases.
5. When the maximum pressure is reached,maintain that pressure for between 15 and 30 minutes.
6. Monitor the pressure inside the pipe by using a certified manometer. Check that a reduction in
pressure does notoccurapartfrom that arising from thermal variations. In large piping installations,
a chart recorder with temperature compensation may be used to record the pressure test for
verification and certification purposes.

ENGINEERING DEPARTMENT
Machinery Specification
1. Main engines
2. Gear Box
3. Shafting
4. Remote Control
5. Generators-main
6. Generators-Emergency
7. Tunnel Thrusters’ Units
8. Fuel Oil Transfer Units
9. Cargo pump (Fresh Water)
10. Cargo pump (Drill Water)
11. Cargo Oil pump
12. Cargo pump (Liquid Mud)
13. Bilge and Ballastpump
14. G.S. and Fire Pump
15. Pressure Set-F.W
16. Pressure Set-S.W
17. L.O. Transfer Pump
18. Sludge Transfer/Dirty Oil Pump
19. L.O. Purifier
20. Fuel Oil Purifier
21. Oily Bilge separator
22. S.W. Cooling Pump for Aircon and Refrigeration plant
23. Engine Cooling System
24. Air Compressors-Starting Air
25. Lifting Equipment
26. Steering Gear
27. Stern tubes
28. Propellers
29. Tanks-minor
30. Floor Plates, Handrails and Gratings
31. Ventilation
32. Engine Exhausts
33. Sewage TreatmentPlant
34. Emergency Fire Pump
35. Stand by Pumps
36. Cooling Water Preheater

37. Garbage Disposal
38. Calorifier
39. Oil Pollution Control System.
General Machinery
1) Propulsion is to be provided by unidirectional marine diesel engines arranged to supply power
independently via reverse reduction gearbox through twin propeller shafts to two controllable pitch
propellers in Kurtnozzle.
2) All main and auxiliary machinery is to be rated for continuous maximum output under tropical
condition. Fuel to be used is marine diesel oil.
3) Maneuvering control of the propulsion units, propeller and gearbox is to be provided from two
stations in the wheelhouse, each forward and aft.
Machineries Functions:
- to produce thrusting force through propeller.
- to provide fuel to the main engine as stand by.
-FI pump: - to supply water to the firefighting system.
set: - to produce electricity for various purpose.
- to transfer fuel oil from cargo tanks to daily service tanks.
- to transfer fuel oil from tank to tank, shore to ship and ship to engine.
p: - for transferring drill water to shore.
- to transfer fresh water from one ship to other.
- for emergency cooling.
- it is usedin high temperature coolingcircuit as stand
by.
- it is used in low temperature cooling circuit as stand
by.
- for disperse oil pollution in sea water.
- it is used to pump outwaste oil or water from the ship.
- to provide sea water from one ballasttank to another.
-to transfer mud from ship to customer.
Liquid mud circulating pump: - for circulating inside the mud tanks to avoid solidification.
il purifier: - to purify the lubricantsupply.
- to pump outdirty oil from ship tanks to shore.
-to separate outthe oil and water from the ship.
- it is used to produce compressed air which is used to start the
D.G./ENGINE.
- supply compressed air to the deck for use.

-to remove the organic and harmful matter from the ship.
-itis used carry outpressurized fresh water.
- it is used to carry out the pressurized sea water to the
accommodation deck.
- it is emergency pump and used to carry out water to the
accommodation deck.
ifier: - it is used to supply hotwater to the accommodation.
-to convertsea water to the potable water.
Bow Thruster
It is useful for maneuvering ship in confined water at low speeds. These are often found in research
vessels,ordrilling supplyvessel,AHTS vessel,wherevery accuratepositioning mustbemaintained.
Cement room
Cementtank andmudtank are presenthere along with different machineriesusedfortheir circulation
and to preventsolidification. Stern thruster unit is also presentin this room.
Machineries Functions
Stern roller-it is used to roll the anchor handling tug.
Capstan- it can be used to control the anchor.
Rope reel- for reeling ofrope.
Boatdavit- A set ofradialarms on the gunwaleofa ship from which life boats are suspendedAnchor
windlass-for mooring
Deck crane- For lifting heavy cargo.
General Arrangement
G A (generalarrangement)gives only the approximate layout &location ofengine room parts &other
machineryon different decks on a board ship.The dimensions given in generalarrangementare not
100%correctbutthey can be treated as for the actual dimension as far as design purposeis carried
upon.

DESIGN DEPARTMENT
Our stay at the design department was the longest and most constructive two weeks of our
internship. We had the privilege to work with the brains behind the functioning of the shipyard. We
were taught aboutthe various design levels and howeach ofthem worked in coordination with each
other and the production.For the ease of our learning we were divided into groups and visited the
following departments –
 Machinery and Piping Design Department
 Basic Design Department
 Electrical Design Department
 Hill Department
Machinery & Piping Design Department
It is one of the most important department related with design. Machinery is that part of the ship,
which are inserted on later stages after completing the basic hull parts and which are notthe partof
the hull. Machinery department, according to shipyard capacity, is either design machinery part to
be built in the shipyard or it suggestto outsource the partaccording to requirementofthe ship.
In Hindustan shipyard limited most of the machineryparts are outsourced by tendering process in
which complete detail of machinery is given according to requirement of the ship. The work of
machinerydepartmentis to arrangeandlocate the machinerypart. Anotherwork associatedwith the
machinery department is that if any problem comes in the machinery part of the ship which is
designed by it, should be treated by the departmentin efficient way. HSL is also having the expert
team of dealingwith oldermachineryparts ofshipwhich comesforrepairin the shipyard.To increase
the life span of machinery parts of the ship, HSL design departmentalso suggestmodifications in
the same. Along with machinery builder guideline HSL machinery design department also suggest
the guidelines for its healthy operation and function. Different machinerylike pumps,generators etc.
are designed according to its requirement. In HSL design department calculations are done to
calculate the machinerycapacity .For example to calculate the capacity for main engine generator,
speed and resistance are taken into consideration.
Layoutof machineryin engine room;layoutofsteering gear;layoutof anchorgear,pumps etc.,then
preparation of technical specification for main engine and auxiliaries,propellers and shafting; diesel
alternators and its auxiliaries; boilers and its auxiliaries; steering gear engine; windlass, mooring
winch, deck cranes etc. ; evaluation of tenders and preparation ofcomparative statementof various
offers to a common base and finalization of technical offers, preparation of necessary working
drawings as per manufacturers plans.

Piping
Layout piping system wise i.e. fuel oil supply system, lubrication oil system, cooling system etc.;
layout of piping for all auxiliaries in the engine room, layout of piping outside the engine room i.e.
bilge system, ballastwater system, firefighting system etc. ,and their respective workingdrawingare
done.
Finally the costestimation for machinery, piping and other equipmentis done.
Basic Design Department
Basic design deals with the hull form design i.e. outer watertight envelop of the ship. This is done
thoroughthe different types of lines planofthe ship.Throughthe plansshapesaswellas dimensions
are drawn. Basic design department of the shipyard prepare the design drawings. These design
drawings are key to hull design.
Lines Plan
The lines plan (lines drawing) consist of projections of the intersection of the hull with a series of
planes. The planes are equally spaced in each of the three dimensions. These set of planes are
mutually perpendicularororthogonalin nature.The pointof intersection of these planes with the hull
results in a series of lines that are projected onto a single plane located on the front, top, or side of
the ship.This results in three separate projections,or views, called the Body Plan, the Half-Breadth
Plan, and the Sheer Plan.
Each station plane will intersect the ship's hull and form a curved line at the points of intersection.
These lines are called sectional lines and are all projected onto a single plane called the Body Plan.
The bottom of the box is a reference plane called the base plane. The base plane is usually level
with the keel.A series of planes paralleland above the base plan are imagined atregular intervals,
usually at every meter. Each plane will intersect the ship's hull and form a line at the points of
intersection. These lines are called waterlines and are all projected onto a single plane called the
Half-Breadth Plan.
A plane that runs from bow to stern directly through the center of the ship and parallel to the sides
of the imaginary box is called the centerline plane. A series of planes parallel to one side of the
centerline plane are imagined at regular intervals from the centerline. Each plane will intersect the
ship's hull and form a curved line at the points of intersection. These lines are called buttock or butt
lines and are projected onto a single plane called the Sheer Plan.

In Hindustan shipyard limited most of designs are prepared on software like Maxsurf and Tribon.
Basic ship data are provided and shape along with its hydrostatic detail comes automatically HSL is
having properly trained staff who are expertin design and run the software smoothly.
Electrical Design Department
The departmentconsists ofthe following –
1.) Electrical Design Office
Preparation of layout of electrical, electronic, navigational installation, preparation of layout of
communicationalsystem, layout of cable routing to various parts of the ship. The electrical part of
machinery and equipmentare dealtby this office and given their comments to machinery division.
2.) Electrical Design (materials)
They deal with the preparation of specification for all electrical, electronic and navigational
equipment,to besentto purchasedepartmentfor procurementaction. Then the evaluation oftenders
and preparation of comparative statements of various offers to a common base, finalization of
technical offers.
Hull Design Department
1) Working Design Steel
Class drawing are 1st done in this departmentusing the lines plan provided by basic design office.
These drawing include mainly the midship section, and some sectional drawing at limited frames,
shell expansion etc… which are sentto the classification society for approval.
After approvalof class drawing is done working and production drawing are made which includes all
the three views with structural members (girder, frame, stringer, longitudinal etc…).
These spacing for all the mentioned structural members and their respective scantling calculation
are done in compliance with the class rule.
2) Mini Loft Drawing Office
The workingwhichare obtain from WDSaretaken andsurfacemodelingandnestingis to be handled
in this sector.
Nesting tapes are prepared and provided to the CNC machines and the PMC of plate, bracketetc…
are provided.
Production documentation is also given which includes the numbering ofdifferentparts i.e. the parts
list is made.

QUALITY CONTROL DEPARTMENT
Quality Control process in a shipyard

Quality in Ship building
Quality Assurance in Ship building or repairor retrofitting is all aboutpreventing mistakes or defects
in the process of manufacturing thereby ensuring that the end productmeets the requirements and
avoid problems when delivering ships or marine products to our customers.
There are procedural as well as administrative activities that try to ensure the above objective in QA.
The goals of QA are two in number - namely to produce a productwhich is "fit for purpose" and
second in doing it"Rightthe first time" so that costly rework and mistakes can be avoided.
On the other hand Quality as Quality control (QC) is focused on the final product and focuses on
defect identification. Quality control fails if Quality Assurance does not work. Having defined the
above two terms let us come to some ground realities.
During the years 2013-14 India witnessed some serious accidents leading to loss oflife – like faulty
cable catching fire and releasing toxic gases;Malfunctioning of valves in the CO2 fir fighting system
etc., in Ship and Submarine building in India due to poor quality and workmanship practices.
We shouldbeluckythat suchmajoraccidents havenotyet happenedhere.Giventhe state ofevents
and the current thinking prevalent everywhere, it is only a matter of time, before one more serious
accidentis waiting to happen.
Lack ofquality in our ship building or other departments elsewhere, leads to:
1) Loss oflife and subsequentincarceration by concerned agencies.
2)Losingoncompetition aswe endupcorrecting mistakes therebylosing time andendingin delayed
delivery.
3) Loss of health and good interpersonal relationships between various departments, due to more
time spentrectifying the defects.
4)Lossof prestige,confidence,self-esteem andall roundbadnameleadingto closingor downsizing
the Business,which is the natural result and finally inability to attract the best and motivated talent
available in the country to work with us due to the above bad name.
A number of articles in various National and International News magazines point out the same
problem all-pervading throughoutIndia and elsewhere,from which we are not immune.Each one of
us are individually responsible for the above state of affairs and it is our responsibility to rectify the
same atour end.
A root cause analysis for these failures leading to a loss of quality and what we can do to improve it
are enumerated below, remembering that we are basically a Technology driven Ship building
Industry waiting to produce a numberof Weapon platforms in the future for Indian Navy and other

agencies; Substantial loss of or absence of Academic and Technical skills in the Engineering
community.
The above problem has its roots in the general problem of Higher Engineering education in the
country being in a dilapidated condition with HSL forced to induct from the same pool who are
academically very poor.
Further, prevalent thinking in the Engineering community about not needing to be current in their
field of Engineering and notstriving to become better in their basic Academic foundations is notvery
encouraging and very depressing to say the least. A number of problems are being encountered
everyday due to this problem alone, everywhere.
It Starts with the Workers
Many of those who tour a shipyard are amazed to learn that it all starts out as flat plate, structural
shapes,and pipe. Through the efforts of many skilled craft workers, these raw materials end up as
a finished vessel that sails away and becomes a “home” for the crew. Each vessel, whether
commercialormilitary, is a self-contained, self-supporting floating city when at sea.Everything from
propulsion and electricalpower to personnelaccommodations andsewage treatmentis contained in
the vessel. Inspection plays an important role in the shipbuilding process from start to finish. Being
costeffective is a key to survival in the shipbuilding industry today.
A Step-by-Step Procedure
In truth, if doneproperly,quality control starts with the workeron the job. Thenextstep in the process
in modern yards is to have the Manufacturing Departmentemploy a quality control operation by the
lead person orsupervisorto check 100%of the work. When thatstep is completed successfully, itis
then passed to the quality assurance inspector who checks the performance of Manufacturing’s
quality control efforts. This step is intended to be an audit operation.When that step is successfully
completed,the regulatory body and customerrepresentatives are called outfor a formal inspection.
When the formal inspection is completed, the assembly can progress to the next phase of
construction. In mostyards, these inspection points are at predetermined milestone events, such as
panel construct, module construct, and final erection in the hull for structure. Piping systems,
machinery installations, and electrical distribution systems are also inspected at predetermined
stages of completion. Redundant inspections ensure defects are caught early and corrected
immediately.
In a shipyard, record keeping is critical for the inspector. The records must be compiled and
maintained as the hull is built, so documentation exists to prove required testing and inspections
were successfully accomplished.The true “final inspection” is during the sea trial period where the
ship is put through planned tests while underwayto confirm operation and safety of the crew under
actual conditions, including hard turns and emergency stop demonstrations.

Non-destructive testing of ship hull steel welds
The non-destructive testing is normally to be performed by the Shipbuilder or its subcontractors in
accordance with these requirements.
The Classification Society’s surveyor may require to witness some testing.
It should be the Shipbuilder’s responsibility to assure that testing specifications and procedures are
adhered to during the construction and the report is made available to the Classification Society on
the findings made by the NDT.
The extent of testing and the numberofcheckpoints are normallyagreed between the ship yard and
the Classification Society.
Limitations
Materials
It applies to fusion welds made in normal and higher strength hull structural steels in accordance
with UR W11, high strength quenched and tempered steels in accordance with UR W16 and
connections welds with hull steel forgings in accordance with UR W7 and hull steel castings in
accordance with UR W8.
Welding processes
It applies to fusion welds made using shielded metal arc welding,flux cored arc welding, gas metal
arc welding,gas tungsten arc welding,submerged arc welding,electro-slag welding and electro-gas
welding processes.
Weld joints
Butt welds with full penetration, tee, corner and cruciform joints with or without full penetration, and
fillet welds.
Timing of NDT
NDT should be conducted after welds have cooled to ambienttemperature and after postweld heat
treatment where applicable.Forsteels with specified minimum yield stress of420 N/mm2andabove,
NDT should not be carried out before 48 hours after completion of welding. Where post weld heat
treatment (PWHT) is carried outthe requirementfor testing after 48 hours may be relaxed.

Testing techniques
General
The testing method, equipment and conditions should comply with recognized National or
International standards, or other documents to the satisfaction of the Classification Society.
Sufficient details should be given in a written procedure for each NDT technique submitted to the
Classification Society for acceptance.
Visual testing
The welds examined should be clean and free from paint.
Liquid penetrant testing. The procedure should detail as a minimum the calibration equipment,
surface preparation, cleaning and drying prior to testing, temperature range, type of penetrant,
cleaner and developer used, penetrant application and removal, penetration time, developer
application and developmenttime and lighting conditions during testing.
The surface to be examined should be cleanand free from scale,oil, grease,dirtor paintand should
include the weld bead and base metalfor at least10mm on each side ofthe weld, or the width ofthe
heataffected zone, whichever is greater.
The temperature of parts examined should be typically between 5°C and 50°C, outside this
temperature range speciallow/high temperature penetrantand reference comparatorblocks should
be used.
Magnetic particle testing
The procedure should detail as a minimum the surface preparation, magnetizing equipment,
calibration methods,detection media and application, viewing conditions and postdemagnetization.
The surface to be examined should be free from scale, weld spatter, oil, grease,dirt or paint and
should be clean and dry.
When using current flow equipmentwith prods, care shall be taken to avoid local damage to the
material. Copper prod tips must not be used. The prod tips should be lead, steel, aluminum or
aluminum- copper braid.
To ensure detection of discontinuities of any orientation, the welds are magnetized in two directions
approximately perpendicularto each other with a maximum deviation of 30°.Adequate overlapping
shall ensure testing of the whole zone. Continuous wet particle method should be used as far as
practicable.

Radiographic testing
The procedure should detailas a minimum the type of radiation source,consideringthe thickness to
be radiographed, test arrangement and films overlapping, type and position of image quality
indicators (IQI), imagequality, film system andintensifying screensusedif any,exposureconditions,
scattered radiation control, film processing, film density and viewing conditions.
Processedfilms shoulddisplayhullno.,frame no.,weld boundaryindicators,Port/Starboard, location
(or film serial number) and date as radiographic image.
The Classification Society may require to duplicate some radiographs in orderthat some processed
films are handed over to the Society together with testing reports. Alternative method to duplicate
the processed film can be agreed with the Society.
Ultrasonic testing
The procedure shoulddetailthe equipment,type of probes (frequency,angle ofincidence),coupling
media, and type of reference blocks, method for range and sensitivity setting, method for transfer
corrections,scanning technique,sizing technique and intervals for calibration checks during testing.
The equipment (instrument and probes) should be verified by the use of appropriate standard
calibration blocks atsuitable time intervals.
The range and sensitivity should be set prior to each testing and checked atregularintervals as per
the procedure and whenever needed.
The scanning surfaces should be sufficiently clean and free from irregularities like rust, loose scale,
paint (excluding primer), weld spatter or grooves which may interfere with probe coupling. The
surface profile should be such to avoid loss ofprobe contactby rocking.
The scanning technique should be determined to allow the testing of the entire volume of the weld
bead and base metal for at least 10mm on each side of the weld, or the width of the heat affected
zone, whichever is greater.
The probe frequency should be within the range 2 MHz to 5 MHz
Base material in the scanning zoneshouldbe examined with a straight beam technique to check the
absence of imperfections which would interfere with the angle beam technique, unless already
demonstrated ata previous fabrication stage.
Angle beam technique should beusedto search forlongitudinal and transverse weld discontinuities.
An angle probewith an incidentangleofthe soundwave equalto that of the weld preparationshould
be used as a minimum.

CONCLUSION
This industrial training at Hindustan Shipyard has helped us gain a vast amount of practical
knowledge and the real difficulties associated in the shipbuilding. We as the students of Naval
Architecture & Ocean Engineering believe that this training experience will help us in building a
successful career. We are very thankful to the training department and all the engineers in the
shipyard who guided us for the pasttwo months.
The training at Hindustan Shipyard has helped us to gain practical skills like reading & interpreting
production drawing, ability to solve practical everyday problems that may occur during construction
and has made me independent. We have learnt the importance of completing the work on time. It
has taught us how to interact professionally with our peers.This training program has helped us in
believing our self and extracted out the hidden potential of ours. We have learnt here to work as a
team. We are highly indebted to Hindustan Shipyard and hope for an opportunity to serve itbetter in
future.
_____________________________________*****_____________________________________

HINDUSTHAN SHIPYARD INTERNSHIP REPORT

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