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The vessel is used for installation and decommissioning of major offshore facilities world-wide. The dual cranes provide for heavy lifting capacity both to install and remove jackets, topsides, and new types of seabed processing equipment. Furthermore, the cranes can be utilised for installation of foundations, moorings and structures in deep water. It can work in shallow water as well as ultra deepwater.
The vessel has two heavy-lifting offshore cranes with 10,000-tonne lifting capacity each, which can lift the equivalent weight of 20,000 cars in tandem.
The 129m (423-ft) high lifting capacity provided by the cranes’ main hoist also facilitates placement of heavy topsides modules at higher elevations. Other stand-out features include greater workability in harsher environments due to the design of the columns. The vessel also boasts a large reinforced work deck area for carrying multiple modules.
When the cranes are fully extended, the vessel will reach 220 metres – more than 20 metres higher than the iconic Marina Bay Sands in Singapore (or 85 metres higher than the London Eye).
The Sleipnir is self-propelled and has a minimum service speed of 10 knots, with power generated by means of dual fuel engines – Marine Diesel Oil (MGO) & LNG. Station-keeping is by means of dynamic positioning (DP3) or mooring system.
The living quarters accommodate up to 400 persons in single and double cabins. All quarters have heating and air conditioning facilities.
Sleipnir’s dynamic ballast and de-ballast system is a joint engineering effort by Sembcorp Marine and Heerema. Its Liquefied Natural Gas (LNG) system is the world’s first Type-C LNG tank installed in an enclosed column.