Singapore’s Sembcorp Marine (SCM) entered into an Engineering and Construction contract with Netherlands-based Heerema Offshore Services B.V. (HOS) to build a new DP3 dual-fuelled semi-submersible crane vessel (SSCV) in mid 2015. Now launched and nearing completion, SSCV Sleipnir is the first dual-fuel crane vessel, with engines running on LNG and MGO for sustainable operation across all environmental jurisdictions.
As the world’s biggest SSCV the new-generation Sleipnir has a pair of 10,000-tonne revolving cranes that can lift 20,000 tonnes in tandem – no other existing crane vessel has this capability – and is set to blaze a trail when it enters into service in the coming months, ready to take on offshore oil, gas and renewable energy installation and decommissioning jobs.
Named after the Norse God Odin’s eight-legged stallion and newly completed at Sembcorp Marine’s Tuas Boulevard Yard for owner Heerema Marine Contractors, SSCV Sleipnir has a 220-metre by 102-metre reinforced deck area, making it the largest crane vessel to be built.
Sleipnir can accommodate 400 persons and will be deployed globally for installing and removing jackets, topsides, deep-water foundations, moorings and other offshore structures.
Importantly, with its single-lift capability catering to larger integrated structures than previously possible, Sleipnir will minimise offshore assembly work and raise operational efficiency to a new level, while not compromising the flexibility and robustness of traditional installation methodologies.
The vessel further stands out as the world’s first crane vessel with dual-fuel engines running on Marine Gas Oil (MGO) and Liquefied Natural Gas (LNG). Coupled with an IMO- and US Coast Guard-approved ballast water management system, Sleipnir will operate sustainably across all environmental jurisdictions.Speaking at Sleipnir’s christening in Tuas Boulevard Yard this evening, Mr Pieter Heerema, Chairman of the Board at Heerema Marine Contractors, said:
“I am immensely proud that Heerema Marine Contractors is again taking things further with the introduction of our new semi-submersible crane vessel. Sleipnir scores several firsts in the industry: It is the largest crane vessel yet built; it has the strongest pair of revolving cranes; and it’s also the world’s first crane vessel with dual-fuel engines running on MGO and LNG, dramatically reducing harmful emissions. Sleipnir’s innovative capabilities will place Heerema even firmer at the forefront of developments in the offshore oil, gas and wind energy industry for both installations and decommissioning.”
Sembcorp Marine President & CEO Mr Wong Weng Sun added: “Sembcorp Marine is grateful to Heerema Marine Contractors for giving us the opportunity to build the world’s biggest, strongest and first dual-fuel semi-submersible crane vessel at our flagship Tuas Boulevard Yard.”
The vessel will leave for sea trials shortly and is scheduled for delivery to Heerema soon afterwards.
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. Altogether it has 12 engines of 8MW each. Its Liquefied Natural Gas (LNG) system is the world’s first Type-C LNG tank installed in an enclosed column.
Related article: Giant Offshore Crane will use LNG Dual-Fuel Propulsion Package (2015)