Wärtsilä solutions ordered for the world’s largest crane vesselNews // November 30, 2015
Heerema's new semi-submersible crane vessel (NSCV), which is being built at Sembcorp Marine, will have a range of Wärtsilä products, systems and solutions.
The vessel is being built on behalf of Netherlands based Heerema Offshore Services and when completed will be the largest of its type, and the third largest vessel overall, in the world.
Accurate positioning of the vessel will be ensured by eight 5,500kW Wärtsilä underwater mountable thrusters, four of which are also retractable. Wärtsilä has developed these four forward retractable thrusters specifically for this project, and given them the type indication WST-65RU. They feature a combination of retractable and underwater mountable functionality. The thrusters installed at the aft of the vessel are WST-65U underwater mountable thrusters. The outboard parts of both types are completely interchangeable. The underwater demounting capability of all eight thrusters means that neither dry docking, nor the use of a habitat is necessary in order to exchange the thrusters. The thrusters are equipped with Wärtsilä Oceanguard anti-pollution face type seals, which have been selected primarily because of the challenging environments in which these thrusters will operate.
In addition to the thrusters, the full scope of supply includes auxiliaries for steering and lubrication, the control units, and Wärtsilä’s Propulsion Condition Monitoring Service (PCMS). Wärtsilä will also supply comprehensive centrifugal pump packages. Delivery of the equipment will commence at the end of 2016.