In June 2010 Allseas awarded the contract for building Pieter Schelte, its 382 m long, 124 m wide dynamically positioned (DP) platform installation / decommissioning and pipelay vessel, to the South Korean shipyard Daewoo.
Long-lead items such as the power generation equipment, thrusters and DP system were ordered in 2007.
In 2008 the high-tensile steel for the jacket and topsides lift systems was ordered, and the detail design of the hull was completed in May 2010.
Equipment for the lift systems and pipelay system were ordered in 2011, continuing into 2012.
When built, Pieter Schelte will have a topsides lift capacity of 48,000 t and a jacket lift capacity of 25,000 t.
Her pipelay tension capacity will be 2,000 t, doubling the capacity of Allseas’ Solitaire and thereby surpassing her as the world’s largest pipelay vessel.
Delivery of the completed topsides lift and pipelay vessel is expected in the second half of 2014, ready for offshore operations early 2015.
The jacket lift system will follow later.
In November 2013 Allseas announced plans to build a second single-lift vessel larger than Pieter Schelte, to be delivered in 2020.
It is intended for installation and removal of the very largest existing platforms.
Length overall (incl. tilting lift beam and stinger)
477 m (1,565 ft)
Length overall (excl. tilting lift beam and stinger)
382 m (1,253 ft)
Length between perpendiculars
370 m (1,214 ft)
124 m (407 ft)
Depth to main deck
30 m (98 ft)
122 m (400 ft)
59 m (194 ft)
Topsides lift capacity
48,000 t (105,820 kips)
Jacket lift capacity
25,000 t (55,116 kips)
Stinger length (incl. transition frame)
210 m (690 ft)
- Operating draught
10-25 m (32-82 ft)
- Maximum speed
- Total installed power
- Dynamic positioning system
LR DP (AAA), fully redundant Kongsberg K-Pos DP-22 and 2 x cJoy system
- Deck cranes
3 x Pipe transfer cranes of
50 t (110 kips) at 33 m (108 ft)
1 x Special purpose crane of
600 t (1,323 kips) at 20 m (66 ft)
- Work stations
Double-joint factory with 5 line-up stations and 2 stations for combined external and internal welding;
Main firing line with 6 welding stations for double joints, 1 NDT station and 6 coating stations
- Tensioner capacity
4 x 500 t (4 x 1,102 kips)
- Pipe diameters
From 2" to 68" OD
- Pipe cargo capacity (deck)