First true Arctic 3-D seismic vessel

‘Polarcus Asima’ seen here at Drydocks World’s Dubai shipyard prior to delivery ‘Polarcus Asima’ seen here at Drydocks World’s Dubai shipyard prior to delivery

When Drydocks World-Dubai delivered the ‘Polarcus Asima’ to its owner Polarcus, the marine geophysical company based in Dubai, she became the company’s third and most sophisticated 3D seismic vessel to date.

Polarcus Asima is a purpose-built 12 streamer 3D seismic vessel of the latest Ulstein SX134 design and the largest vessel in the company’s fleet with an overall length of 92m, a beam of 21m and a draught of 7.5m. The newbuilding is also the first true Arctic-ready 3D seismic vessel in the industry with an ICE-1A class notation from DNV, double hull and an advanced ballast water treatment system. The 7,420gt vessel has a maximum speed of 15 knots, a bollard pull of 135 tonnes and is capable of deploying 12 streamers of 9,000m length at 100m separation.

The 12,760 ekW diesel electric propulsion plant consisting of six Wartsila four-stroke gensets (4 x 9L20 and 2 x 9L26) powers the two shaft-line 3,750kW Berg CP propellers and Brunvoll thrusters comprising an 850kW retractable azimuthing thruster forward, a 1,200kW bow thruster and a 830kW stern thruster.

A sister vessel, the Polarcus Alima, is scheduled for delivery in early 2011. The company has signed shipbuilding contracts with Ulstein Verft in Norway for two additional sister ships for delivery in March and June 2012 at an estimated cost of $168 million per vessel. Although these vessels will be constructed to the same Ulstein SX134 design, they will have a higher ice class (ICE 1A super), increased propulsion and other innovative efficiency enhancing features. They will be capable of towing up to 14 streamers with 100m lateral separation between streamers.

All these vessels sport the Ulstein X-bow design along with other important features such as the additional SF class notation for controlled stability and floatability, DP2 dynamic positioning and both Comfort and Clean class notations by DNV.

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