Kleven Verft in Ulsteinvik, Norway, in cooperation with its sister yard Myklebust Verft, has signed two contracts with Siem Offshore Inc (OSE ticker SIOFF), for the delivery of two large and environmentally friendly anchor handling vessels by Vik Sandvik design VS 491 Clean Design. Siem Offshore already has 8 identical vessels under construction with Kleven Verft and Myklebust Verft

The vessels are sophisticated anchor handling vessels with supply capacity (AHTS) by the VS 491 CD design. The contract value is NOK 1,15 billion.

The vessels are 91,0 m of length over all, with a beam of 22,0. Installed power is 20.640 kW (28.000 Hp), capacity on the winch is 500t. Bollard pull is calculated at 300t. The combination of environmentally friendly design and large capacities make the vessels especially suitable for operations in the North Sea. The accommodation gives space for 60 people.. Furthermore, the vessels are prepared for a number of optional features, like heavy offshore crane, A-frame and deck crane for safe anchor handling.

The vessels will be delivered in July and September 2010 .

Siem Offshore now has in total 14 contracts with Kleven. In total the two yards in Kleven Maritime has and order book of 31 vessels at a value of NOK 11,7 billion.