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First X-Stern mounted on newbuild

By: Tom Russell 17/09/2015 Ulstein

General Vessels Windfarms

The first X-STERN™ is currently being mounted on the first of two newbuilds to serve the offshore wind service industry. The vessels will be operated by Windea Offshore.

Yno 309 and 310 are scheduled for delivery from Ulstein Verft in 2016 and 2017. In addition to being the first vessels from Ulstein Verft in the offshore wind service segment, they are also the first so far with an X-STERN™ design. Ulstein Group has four people following up the production on-site at the Crist hull yard in Poland.

“The work progress is steady”, reports site manager Magnar Kvamme, continuing: "The hull can be expected to arrive at Ulstein Verft in Ulsteinvik, Norway, in the second half of December.”

The X-STERN™ has several of the same characteristics as the X-BOW®. The X-BOW® design is characterised by its slender hull water line and a smoother volume distribution in the foreship. It leads to reduced pitch and wave drift forces, as well as eliminating slamming. The X-STERN™ is a sloping and higher stern, allowing for a sharp stern shape in which the transom plate is replaced by a pointed aft.

According to Ulstein the positive effects of these designs include reduced power and fuel consumption while on DP, and there will be no green sea on deck due to the stern shape and enclosed nature of the aft deck.

Ulstein Verft signed the shipbuilding contract in Q1 2015 with the Germany-based Bernhard Schulte. The final detailed arrangements and equipment for the vessels have been developed and specified in cooperation with WINDEA Offshore GmbH & Co. KG, which is the Bernhard Schulte’s affiliate for offshore wind projects.

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First X-Stern mounted on newbuild

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