Conversion of Polar Queen completedVessel & ROV News // August 24, 2007
Polar Queen is now at work offshore West Africa.
A nighttime view of Polar Queen's new lay tower.
Norwegian naval architects Multi-Maritime report that Rieber's conversion of Polar Queen on behald of Acergy has been completed.
The rebuilding of the former cable layer was completed at Damen Ship Repair Yard in Rotterdam. The vessel is now one of the most advanced flexlay and subsea construction vessels in the world.
The vessel was originally built at Hyundai Mipo in 2001, and the rebuilding was performed in two phases.
The first phase was completed at A&P Teesside in the UK last summer. There, all the cable laying equipment and the shelter deck were removed. Two large pipe carousels and a helicopter deck were installed, and the main deck was strengthened to 10 t/m2.
The second phase at Damen, involved the installation of a 200 tonnes offshore crane (300 tonnes inshore), a 340 tonne lay tension lay tower, a 400 tonne heave compensated deployment winch system, ROVs and additional accommodation/office space.
The vessel's beam was increased from 21.0 m to 27.0 by adding sponsons.
Multi Maritime's involvement was design development, in co-operation with Acergy Group, lines design and stability documentation.
When designing the lines for the sponsons, great emphasis was put into fairing the sponsons smoothly into the existing hull. Although this meant a more complicated construction, it paid of in that the vessel loose very little speed due to the sponsons. In fact it reached a speed of 16 knots during the sea trials.
Polar Queen left the Dutch yard in mid-August 2007. Its first jobs are in West Africa, pipelaying in the Moho Bilondo and Kizomba C fields.