Wartsila has been awarded a contract to provide products, systems and solutions for a new semi-submersible crane vessel (NSCV) to be built at the Sembcorp Marine Tuas Boulevard Yard in Singapore for Netherlands-based Heerema Offshore Services.

Under the terms of the contract, the company will provide eight 5500kW Wartsila Underwater Mountable thrusters equipped with Oceanguard anti-pollution face type seals to ensure accurate positioning of the vessel.

Four of the thrusters, called the WST-65U, are specifically designed for this project and feature a combination of retractable and underwater mountable functionality.

The underwater demounting capability of all eight thrusters will facilitate the exchange of thrusters without dry docking or the use of a habitat.

Additionally, Wartsila will supply auxiliaries for steering and lubrication, the control units, and its propulsion condition monitoring service (PCMS) and its centrifugal pump packages.

Deliveries under the order are expected to take place in late-2016.

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By GlobalData

Heerema Offshore Services Sipke Schuurmans said: “We have a long standing relationship with Wartsila propulsion solutions on other vessels in our fleet and look forward to successfully continuing this relationship.

“We have every confidence that these state-of-the-art thrusters are the right choice for this vessel, which is destined for offshore projects worldwide.”

The NSCV, which will be equipped with two cranes of 10,000t lifting capacity, will be the largest of its type, and the third largest vessel in the world upon completion.

The new self-propelled NSCV will transit at speed of about 10k.

“We have every confidence that these state-of-the-art thrusters are the right choice for this vessel, which is destined for offshore projects worldwide.”

Wartsila Marine Solutions Propulsion vice-president Arto Lehtinen said: “The eight degree tilted propeller shaft solution that is a feature of the Wärtsilä Underwater Mountable thrusters, significantly reduces the interaction between the thrusters and the hull, thereby notably enhancing the vessel’s dynamic positioning performance.

“This feature, together with the retractability of the thrusters, was extremely important in the award of this valuable contract.”

Last week, Wartsila was awarded a contract to provide propulsion solutions to a new polar logistics vessel being built for Terre Australes et Antarctiques Françaises (TAAF) and the French Polar Institute (IPEV).

Under the terms of the deal, the company will provide four in-line Wartsila 20 main engines, two stainless steel CPP propellers and shaft lines, two reduction gears, four NOR emissions after treatment systems, and one tunnel thrusters, all in line with the Bureau Veritas (BV) icebreaker 5 ice class rules.

Image: The new semi-submersible crane vessel (NSCV) to be built for Heerema Offshore Services will feature a broad scope of Wartsila solutions. Photo: © 2015 Wärtsilä.