Conversion: Seven Mar
Main Dimensions:
Length, over all: 147.90 m
Breadth, moulded: 27.00 m
Depth, moulded: 13.20 m
Summer draft: 8.00 m
Accomodation for: 121 Persons
Gross Tonnage: 14520 GRT
Class: DnV 1A1, E0, WI-OC, DYNPOS-AUTR, HELDK-S
Name: Seven Mar
Previous name: Polar Queen
Owners/Operators: Rieber Shipping / Acergy Group
The rebuilding of the former cable layer Polar Queen has now been completed at Damen Ship Repair Yard in Rotterdam. The vessel is one of the most advanced flexlay and subsea construction vessels in the world.
The vessel was originally built at Hyundai Mipo in 2001. The rebuilding was performed in two phases. The first phase was completed at A&P Teesside last summer. There all the cable laying equipment and the shelter deck were removed. Two large pipe carousels and a helicopter deck was installed. Further the main deck was strengthened to 10 t/m2.
The second phase involved the installation of a 200 t offshore crane (300 t inshore), a 340 t lay tension lay tower, a 400 t 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 has been design development in cooperation with Acergy Group, lines design and stability documentation.
Later sold to Subsea 7 and renamed “Seven Mar”.