Semi-Submersible Crane Vessel

Principal dimensions
? Length of vessel 175.00 m
? Breadth of vessel 87.00 m
? Depth to main deck 45.00 m
? Length of each lower hull 163.00 m
? Operation draught 27.50 m
? Transit draught, approx. 10.50 m

Main characteristics of the J-lay system:

Pipe laying
? Maximum water depth 2,000-3,000 m
? Significant wave height 4 m (maximum)
? Maximum pipe laying load 5,250 Kn
(three tensioners, 1,750 kN each)
? Maximum pipe holding loads 20,000 kN
? Tower angle 90 C 100 degrees

Pipe data
? Pipe diameters 4 to 32 in
? Maximum diameter special piece 1,200 mm
? Nominal maximum pipe length (4 x 12.2 m) 48.8 m
? Maximum pipe section weights 50 t

Vessel upgrade
The vessel engineering involved the design of the internal
stiffening for the hinges to receive the J-lay equipment, the
upgrade of the DP capacity by means of additional thrusters and
the power upgrade with four new diesel generator sets.


PowerOriginalUpgradeTotal
Main8 x 5,600 kW4 x 5,600 kW12 x 5,600 kW
Auxiliary2 x 3,000 kW--2 x 3,000 kW
Total50,800 kW22,400 kW
Thrusters
Azimuthing4 x 4,500 kW--4 x 4,500 kW
Retractable
azimuthing
4 x 3,000 kW 4 x 3,000 kW
Retractable
azimuthing
2 x 5,500 kW2 x 5,500 kW
Bow2 x 2,500 kW--2 x 2,500 kW
Total35,000 kW11,000 kW41,000 kW