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Offshore Support Journal

Offshore Support Journal

Highly-specified subsea ship wins contract – supporting windfarms

Wed 27 Sep 2017 by David Foxwell

Highly-specified subsea ship wins contract – supporting windfarms
Viking Neptun, an extremely high spec subsea vessel intended for the most demanding offshore work, has been contracted as an accommodation platform

Eidesvik, the well-known Norwegian owner and operator of offshore support vessels has been awarded another contract in the offshore wind sector, supplying one of the most high-spec subsea ships of its type for accommodation duties.

Adwen has awarded the company a contract for the subsea vessel Viking Neptun for ‘support work.’ Commencement is mid-October 2017 and the contract is for five months firm with further options.

“I am very pleased with our organisation’s ability to find employment for Viking Neptun in the renewables market,” said the company’s chief executive, Jan Fredrik Meling. “This is the fourth contract Eidesvik has been awarded in the offshore wind market since the beginning of 2016.”

To see a high specification subsea vessel such as Viking Neptun working in the offshore wind industry highlights how much shipowners need to find work for their vessels outside the offshore oil and gas sector, even if the ships they tender are sometimes hugely over-specified for windfarm work.

Viking Neptun is a Salt 301 design which was specifically designed to meet its owner’s requirements for flexibility. The vessel was developed by Eidesvik in close co-operation with Salt Ship Design and the shipyard that built it, Kleven Maritime. It has accommodation for up to 150 people, which probably played a large part in it winning the contract with Adwen.

Although designated as an offshore construction vessel it also has an underdeck carousel and can undertake flexible pipe and cable lay projects, although this ability will not be one of the reasons it was selected by Adwen.

The dynamic positioning class 3 vessel has a 2,600 m2 deck area with flexible layout for a wide range of operations. Deck strength is 10 tonnes/m2 and the vessel is capable of carrying a deck load of around 6,000 tonnes. The vessel has two moonpools – a remotely operated vehicle moonpool of 5.6 m x 4.5 m and a work moonpool measuring 9.0 m x 7.5 m. It also has an offshore crane, but the Adwen deal is unlikely to require the use of it.

The ship has an ICE-1B class, indicating it has been designed for operations in medium ice conditions where ice floes of 0.6 m thickness are anticipated. It also has DEICE notation that recognises it is equipped with de-icing or anti-icing systems, enabling it to work in harshest of conditions, but of course the Adwen charter will not require that capability either.

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