The document summarizes the jumboizing project of the trailing suction hopper dredger HAM 310 by Singapore Technologies Marine in 2000. The project involved lengthening the dredger by 29.40 meters and adding 1,300 tons of steel. Modifications were also made to the dredge piping, pumps, and self-emptying channels. As a result, the dredger's overall length increased to 167.60 meters, gross tonnage to 13,456 tons, and hopper capacity to 12,535 cubic meters. Vuyk Engineering Rotterdam provided engineering services including feasibility studies, tender packages, construction drawings, and upgrading the dredging and pumping equipment.

1. Vuyk Engineering Rotterdam B.V.
Naval architects, Marine engineers, Consultants
P.O. Box 1, De Linie 7
2900 AA Capelle aan den IJssel
Phone +31 (0)10 450 25 00
Fax +31 (0)10 458 72 45
Email vuyk@vuykrotterdam.com
Website www.vuykrotterdam.com Values are for presentation only
Principal dimensions
before jumboizing
Jumboizing TSHD 'HAM 310'
m
m
m
m
m
m
persons
GT
NT
ton
m³
kn
Capacity
Length overall
Length between perpendiculars
Breadth moulded
Depth moulded
Draught moulded (Summer load line)
Draught moulded ("Dredging draft")
Complement
Gross tonnage
Net tonnage
Deadweight
Hopper capacity
Service speed
In 2000, the Dutch dredging contractor HAM Dredging and Marine Contractors
(nowadays called Van Oord ) ordered the jumboizing of their 8 225 m³ trailing
suction hopper dredger 'HAM 310' ay the yard Singapore Technologies Marine.
It was the first dredger jumboisation project in the shiprepair industry in Singapore.
The project involved the lengthening of the dredger with 29.40 metres, involving
some 1 300 tons steel as well as modification of the jet piping system, dredge
piping, dredge pump motors and self-emptying channels.
138.20
125.00
23.00
11.60
8.68
9.80
46
10 378
3 113
14 695
8 225
15.0
Two trailing suction pipes, diameter
Dredging depth
Two dredging pumps; power during
* trailing suction dredging
* shore discharge
Bow discharge
20 bottom doors with a clear opening size of
Dredging equipment
1 100
32.00
2x 1 400
2x 2 210
1 000
3.88 x 3.45
mm
m
kW
kW
mm
m
VER project 00.222

2. Vuyk Engineering Rotterdam B.V.
Naval architects, Marine engineers, Consultants
P.O. Box 1, De Linie 7
2900 AA Capelle aan den IJssel
Phone +31 (0)10 450 25 00
Fax +31 (0)10 458 72 45
Email vuyk@vuykrotterdam.com
Website www.vuykrotterdam.com Values are for presentation only
Principal dimensions
after conversion
Jumboizing TSHD 'HAM 310'
167.60
154.31
23.00
11.60
8.70
10.00
46
13 456
4 036
20 059
12 535
15.1
m
m
m
m
m
m
persons
GT
NT
ton
m³
kn
Capacity
Length overall
Length between perpendiculars
Breadth moulded
Depth moulded
Draught moulded (Summer load line)
Draught at reduced freeboard
Complement
Gross tonnage
Net tonnage
Deadweight
Hopper capacity
Service speed
Dredging equipment
VER scope of work First of all VER made a feasibility study on the optimal length for lengthening of the
dredger, which resulted in a length of 29.40 metres, taking into account
longitudinal strength and stability.
In close cooperation with the HAM's technical department, VER worked out a
complete tender package, including technical specification, detail engineering and
strength calculations of the lengthened vessel.
The construction drawings of the mid-body section and coaming extension, the
new jet water system, the new hopper discharge system and the renewal of
dredge and jet pump drives were carried out as well.
An additional 2 000 kW generator set was required for ship's operations.
Two trailing suction pipes; diameter
Dredging depth:
* nominal
* maximum
Two dredging pump, power during:
* trailing suction dredging
* shore discharging
Two jet water pumps
Bow discharge
Bottom doors
1 100
35.00
48.00
2x 2 400
2x 2 400
2x 828
900
24
mm
m
m
kW
kW
kW
mm
VER project 00.222