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 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 at the end of 2014. The jacket lift system will follow one year later.
Length (incl. tilting lift beam protrusion and stinger)
431 m (1,413 ft)
Length (excl. tilting lift beam protrusion and stinger)
382 m (1,253 ft)
Length between perpendiculars
370 m (1,214 ft)
124 m (407 ft)
Total installed power
Dynamic positioning system
LR DP (AAA), fully redundant Kongsberg K-Pos DP-22 and 2 x cJoy system
Three pipe transfer cranes:
50 t (110 kips) at 33 m (108 ft) main hoist capacity
Special purpose crane:
600 t (1,323 kips) at 20 m (66 ft) main hoist capacity
Topsides lift capacity
48,000 t (105,820 kips)
Jacket lift capacity
25,000 t (55,115 kips)
170 m (558 ft)
Double-joint factory with 5 line-up stations and 2 stations for combined external and internal welding;
Mainline with 6 welding stations for double joints, 1 NDT station and 6 coating stations
4 x 500 t (4 x 1,102 kips)
From 2” to 68” OD
Main deck pipe cargo capacity
Second half 2014