Sembcorp Marine completes world’s biggest and strongest semi-submersible crane vessel for Heerema
The world’s biggest semi-submersible crane vessel (SSCV) is set to blaze a trail when it enters into service in the coming months, armed with the strongest pair of revolving cranes for offshore oil, gas and renewable energy installation and decommissioning jobs, the company said in its release.
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.
The vessel also has two 10,000-tonne revolving cranes which can lift loads of up to 20,000 tonnes in tandem. No other existing crane vessel has this capability.
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.
Heerema has already secured contracts to deploy the vessel in various offshore energy developments, including: Leviathan topsides installation in the Mediterranean Sea; Tyra jackets and topsides installation and removal in the Danish North Sea; Brae B jackets and topsides removal in the UK North Sea; as well as transportation and installation of the Hollandse Kust Zuid (HKZ) Alpha HVAC platform in the North Sea, off the Dutch coast.
In the offshore wind sector, Heerema sees a significant growth in the size of wind turbines and foundations, which requires specialised equipment for their installation.
With its large cranes capable of a 129-metre lifting height and a combined 20,000-tonne lifting capacity, Sleipnir is very well placed to accommodate this trend of increasingly bigger offshore wind turbines.
At its peak, the construction of Sleipnir involved up to 3,700 workers in a single shift. The project has a current Lost Time Injury Rate (LTIR) of 0.35 per million man hours worked, a commendable safety performance which Sembcorp Marine President & CEO Mr Wong Weng Sun said reflects the Group’s strong safety commitment.
About Heerema Marine Contractors
Heerema Marine Contractors (HMC) brings more than 50 years of specialized skills to the offshore oil, gas and wind industry and excels at transporting, installing and removing offshore facilities. Heerema manages the entire supply chain of offshore construction, from design through to completion. The services encompass engineering, planning, logistics, project management and execution of projects all over the world. Heerema owns and operates the world’s largest crane vessels.
About Sembcorp Marine
Sembcorp Marine provides innovative engineering solutions to the global offshore, marine and energy industries, drawing upon more than 50 years of track record. Sembcorp Marine owns and operates shipyards and other facilities in Singapore, Indonesia, Norway, the United Kingdom, USA and Brazil.
