Pioneering Spirit

Pioneering Spirit  (formerly Pieter Schelte) is the largest construction vessel in the world. Inspired by the offshore heavy lifting pioneer Pieter Schelte Heerema (1908–81) and designed completely in-house, the vessel is designed for the single-lift installation and removal of large oil and gas platforms and the installation of record-weight pipelines.

The emergence of Pioneering Spirit  signifies a step-change in offshore installation and decommissioning. Capable of lifting entire platform topsides of up to 48,000 t and jackets up to 20,000 t in a single piece, she significantly reduces the amount of offshore work associated with installation and decommissioning, moving the work onshore where it is safer and more cost effective.

Built at the DSME shipyard in South Korea (2011–14), the vessel commenced offshore operations in 2016 with removal of the 13,500 t Yme production unit offshore Norway.
The vessel redefined heavy lifting with the single-lift removal of Shell’s iconic 24,000 t Brent Delta platform topsides from the North Sea in April 2017 - a world record for an offshore lift.
In June 2018 Pioneering Spirit  executed the fastest installation of a large, fully completed topside, and heaviest single-lift installation to date, when it set down Equinor’s 22,000 t Johan Sverdrup DP topsides on its jacket offshore Norway.

The twin-hulled vessel is 382 m long and 124 m wide. At the bow is a slot, 122 m long and 59 m wide, that enables Pioneering Spirit  to move around a platform and lift and transport entire topsides using eight sets of horizontal lifting beams.
For jacket removal and installation, two 170 m long lifting beams, which can rotate on hinges, will be located at the vessel’s stern.
Complementing the lifting systems is a 5000 t special purpose crane for additional lifts such as lighter topsides and jackets, modules and bridges.

Pioneering Spirit’s large ship size gives her very good wave response behaviour, superior to semi-submersible crane vessels in operational wave conditions; topsides and jackets can be installed or removed in significant wave heights of up to 3.5 m. While the vessel moves due to wave action, all motions relative to the platform are eliminated by engaging the active motion compensation system, which enables Pioneering Spirit  to make large lifts in hostile seas.

Eight diesel generators provide 95 MW of power, driving 12 azimuth thrusters for dynamic positioning (DP3) and propulsion. Pioneering Spirit’s can sail under her own power at a high transit speed, making her suitable for worldwide use. Operating on full dynamic positioning, she can work accurately in any water depth, while her light ice class will extend the periods in which she can operate in Polar Regions.

Also built to install record-weight pipelines in all water depths, with an S-lay tension capacity of 2000 t, she surpasses Solitaire  as the world's largest pipelay vessel.
Pioneering Spirit  commenced pipelay operations on the TurkStream project in the Black Sea in summer 2017. Despite laying 32-inch pipe at depths of 2200 m, she consistently averages 5 km per day. Never before has such large-diameter pipe been laid at such depths.

Iron Lady
To transfer topsides to or from Pioneering Spirit, Allseas uses its 200 m long, 57 m wide cargo barge Iron Lady. In case the water depth at the quayside is too shallow for Pioneering Spirit, topsides are first loaded onto the barge for transfer to or from the yard. Topsides transfers between Pioneering Spirit  and the barge takes place in sheltered waters close to the yard.

Bumblebee
When Pioneering Spirit  is required for topsides lift work, the pipelaying stinger is removed from the bow section of the vessel and stored on the purpose-built barge, Bumblebee.

Technical design

Vessel specifications

Length overall (incl. tilting lift beams and stinger)477 m (1,565 ft) 
Length overall (excl. tilting lift beams and stinger)382 m (1,253 ft) 
Length between perpendiculars370 m (1,214 ft) 
Breadth124 m (407 ft) 
Depth to main deck30 m (98 ft) 
Slot length122 m (400 ft) 
Slot width59 m (194 ft) 
Topsides lift capacity48,000 t 
Jacket lift capacitySafe working load of 20,000 t, with six lifting blocks of 5000 t each 
Operating draught10-27 m 
Maximum speed14 knots 
Displacement1,000,000 t (at maximum draught) 
Total installed power95,000 kW 
Thrusters12 x 6050 kW azimuth  
Dynamic positioning systemFully redundant, class 3 Kongsberg K-Pos DP-22 and 2 x cJoy system
 
Accomodation571 persons 
HelideckMaximum take-off weight 12.8 t, suitable for Sikorsky S-61 and S-92 helicopters 
Deck cranesSpecial purpose crane of 5000 t
Special purpose crane of 600 t
3 x pipe transfer cranes of 50 t 
Work stationsDouble-joint factory, with 5 line-up stations and 2 stations for combined external/internal welding
Firing line with 6 (double joint) welding stations, 1 NDT station and 6 coating stations
 
Installed tension capacity4 x 500 t (4 x 1100 kips) 
Pipe cargo capacity on main deck27,000 t 
Pipe diametersFrom 2" to 68" OD 
Classifications100 A1 Heavy lift and heavy cargo ship, upper deck aft of frame 43 strengthened for load of 15 t/m²; helicopter landing area, LA, *IWS, LI, EP (B, G, N, O, P, S), ice class 1C FS , DP (AAA), PSMR* with following descriptive note: Pipelaying vessel ShipRight BWMP (S+F), split bow forward of frame 99 
Port of registryValletta

Pioneering Spirit  projects