Dredging Vessel

1. TSHD650 – MAINTAINING THE RIGHT DEPTH
Executive summary

2. Damen is an international shipyard group but, at heart, we are still a family
company. Whatever we do – whether it’s in our building activities or our
services – we always aim to match our customers’ needs and exceed their
expectations
 Shipbuilder since 1927
 40 yards around the world
 Global service network
 Large variation portfolio e.g.
THE DAMEN FAMILY
 Tug boats
 Dredgers
 High speed craft
 Support vessels
 Passenger vessels
 Cargo ships
 Naval vessels

3. Damen offers a range of small and
medium sized Trailing Suction Hopper
Dredgers, designed for maintenance
dredging but also customizable with
various options.
The designs are future proof, sustainable
and well-suited for dredging various
density of spoils
The complete concept has been designed
with the philosophy ‘to dredge efficiently
for the lowest cost per m3 of dredged
material’.
TRAILING SUCTION HOPPER DREDGER

4. The TSHD650 is designed for maintenance dredging using the DN 400
starboard trailing suction pipe.
The hopper can be emptied via the bottom doors.
Optional; through the rainbow nozzle or pumping it to shore via a (floating)
pipeline connected to the bow coupling.
 Maximum dredging depth : 15 m
 Maximum dredging depth (Grab)* : 20 m
 Rainbow distance (approx.)* : 55 m
 Discharge distance via the pipeline* : 850 m
* Values based on Damen fine sand definition
* Optional features
MAIN FUNCTIONS

5. Bureau Veritas
I, XHull, XMach, Hopper Dredger, unrestricted navigation – dredging within 15 miles from shore or within 20 miles from
port, Dredging over 15 miles from shore with Hs ≤ 2.5m, XAUT-UMS, INWATERSURVEY, PROTECTED FO TANKS,
GREEN PASSPORT
 Length over all (excl. bow coupling) : 56.85 m
 Beam moulded : 12.00 m
 International draft from base : 3.18 m
 Dredging draft from base : 3.50 m
 Hopper volume : 650 m³
 Gross tonnage : 1095 GT
 Deadweight at dredging draft : 1135 ton
 Trail speed at dredging draft : 10.30 kn
 Crew : 10 persons
MAIN CHARACTERISTICS

6. BENEFITS of an as built vessel:
 Proven performance of the vessel
 Performance as measured.
 Reduced technical risks
 Delivery of functioning systems,
instead of loose parts.
 Minimal ‘first of series’ bugs.
 On time delivery
 Shortened project duration.
 Reduced delivery risks.
 Limited client workload on design and project phase
PROVEN DESIGN

7.  Ballast water : 82 m³
 Fuel oil : 62 m³
 Potable water : 59 m³
 Sewage* : 34 m³
 Bilge water : 4 m³
TANK CAPACITIES
* The design also includes a
sewage treatment unit

8.  Minimum seawater temperature : 0 ˚C
 Maximum seawater temperature : 32 ˚C
 Minimum outside air temperature : - 8 ˚C
 Maximum outside air temperature : 40 ˚C
 Minimum 50% relative humidity
 Maximum 90% relative humidity @ 35˚C
 Maximum 60% relative humidity @ 40˚C
 Winter inside temperature : 22 ˚C
 Summer inside temperature : 24 ˚C
ENVIRONMENTAL DESIGN CONDITIONS

9.  Paint system lifetime : 36 months
 Sacrificial anodes lifetime : 36 months
 Impressed Current Cathodic Protection
(ICCP) for underwater hull
 Impressed Current Anti-Fouling (ICAF) for
sea chests and boxcoolers
CORROSION PROTECTION

10.  Two main diesel engines of 450 bKW each
 Two fixed pitch azimuth thrusters of 1300mm in nozzles
The design has optimal maneuverability with the azimuth thrusters in
combination with a three channel type bow thruster of 245 kWm.
MAIN PROPULSION MACHINERY
The above given figures of engines are approximately

11.  Trailing suction pipe : DN400
 Jet water system : DN250
 Dredge pump : Damen in-house designed pump, medium pressure
 Dredge pump drive : 450 KW
 Jet water pump : 700 m³/hr at 8 bar
 Jet water pump drive : 260 KW
 Jet water monitors : 2 pieces
 Swell compensator : 1m stroke
DREDGING SYSTEM
The above given figures of engines are approximately

12. Draghead characteristics:
 Single visor draghead with an adjustable visor
 Replaceable NI-HARD wearing blocks
 Jet water nozzles
 Exchangeable point teeth
 CFD optimized design
DREDGING SYSTEM

13. DREDGING SYSTEM
Telescopic overflow Clean hopper design
Optimal fit trailing suction pipe
Remote controlled monitors

14. The dredge monitoring and control system comprises of;
 Monitoring of main equipment
 Operation of…
 … the gantries, winches and swell compensator
 … the dredge and jet water pump
 … the valves & bottom doors
 … the jet water monitors
 … the telescopic overflow
A more advanced dredge monitoring system can be offered as an option
DREDGING SYSTEM

15.  400 V and 230 V, 50 Hz electrical networks
 Two generator sets of 150 eKW each
 One emergency generator set of 49 eKW
 Shore connection for 125A, 400 V – 50 Hz
 Alarm and monitoring system
ELECTRICAL AND AUTOMATION SYSTEM
The above given figures of engines are approximately

16.  One combined anchor and mooring winch
 Two capstans on the aft deck for mooring operation
 One deck provision crane; SWL 2.6t at 8.6m
DECK EQUIPMENT
The above given figures of crane are approximately

17. The accommodation is designed with the philosophy to have a perfect balance
between work and recreation. Selecting high quality materials, balanced
colours and striving for an optimal lay out, by combining Health & Safety with
Work & Rest facilities
Furthermore, the vessel is provided with common spaces like a laundry room,
change room and office. Upon client request we are flexible in the arrangement
of certain spaces and their purpose.
ACCOMMODATION

18. The vessel can be customized by adding various options, such as…
1. Light mixture overboard (LMO)
 To prevent dredged mixture of low sediment content to reach the
hopper, the low mixture is dumped through the bottom of the vessel.
2. Self-emptying system
 The dredge pump can be used to empty the hopper via the suction inlet
at each bottom door. The mixture can be
discharged via the bow coupling unit, by
means of floating pipeline or rainbow.
 Rainbow distance (approx.)* : 55 m
 Discharge distance via the pipeline* : 850 m
* Values based on Damen fine sand definition
OPTIONS

19. The vessel can be customized by adding various options, such as…
3. Degassing system
 In case dredged material contains gas, a system designed for 2.5% in
situ gas content at -15 m and automatic extraction can be added.
4. Grab crane
 For alternative loading a specially designed dredge crane,
mounted on a vessel-integrated pedestal,
can be provided.
The crane has a SWL of 8t at 10m,
with a 2.5 m³ clamshell bucket.
OPTIONS

20. The vessel can be customized by adding various options, such as…
5. Damen Dredge Monitoring system
To optimise the efficiency of the dredging processes an extensive instrumentation
and visualization package is installed, the Damen Dredge Monitoring (DDM5.0),
enabling the dredge master to closely control the process and make accurate
decisions.
Several separate modules available:
 Automatic TSP launch and recovery
 DDM5.0 Basic
 Real-time draft measurements
 Visualization of the side and horizontal view of the trailing pipe
 DDM5.0 Enhanced
 Loading module for the real-time presentation of the mixture load and total volume
 Production module for the real-time presentation of the total production
 NAVGUARD MODULE
 Displays the dredger on the surveyed maps to track the progress
OPTIONS

21. AVELINGEN-WEST 20 P.O. BOX 1 PHONE +31 (0)183 63 99 22 INFO@DAMEN.COM
4202 MS GORINCHEM 4200 AA GORINCHEM FAX +31 (0)183 63 21 89 WWW.DAMEN.COM
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