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October 2012www.marinelink.com 29critical tanks, pipelines and systems, andthe propellers, gears and thrusters are di-mensioned for withstanding operations inice. Escape corridors and rescue equip-ment are also protected against icing dur- ing Arctic operations. The hull form is not really icebreaking,why the intention is to do the work in open water. 3D seismic acquisition will only take place in ice-free water. The Arctic qualities of the vessel enables the vessel to relocate through ice to and from the survey area, or remain in icy areas waiting for the ice to clear, increasing the operational window of the vessel. Seismic equipmentPolarcus? worldwide service capabili- ties encompass conventional 3D surveys and sophisticated wide- and multi-az-imuth projects, high-density 4D develop- ment surveys. Polarcus Adira is a 3D/4D 12-14 streamer seismic research vessel capable of deploying up to 14 Sercel Sen- tinel solid streamers. The navigation sys- tem is ION Orca and the depthpositioning system is of type ION Di-giBIRD combined with DigiFIN lateralcontrol and DigiRANGE acoustic rang-ing, supplied by ION Geophysical Cor- poration. The seismic air gun source is by Bolt Technology 1500-LL/1900-LLXT with dual sources. The source controller is a fully distributed digital gun Seamap GunLink 4000 controller. The seismic operation room is locatedmidship over two decks in close vicinity to the seismic winches in the work area. Seismic dedicated areas include a Seis-mic operation room, Rack room (Server room), Back deck store, Bird shack, Air gun control room, Technical library, Tape store, Tail buoy workshop, Two battery stores and a Streamer store repair room.There are a number of winch systems fit- ted with radio remote control. Under an agreement with GX Technol- ogy, this global independent data pro- cessing company provides the on-board seismic data quality control and when re-quired seismic data processing serviceson-board Polarcus' vessels, and onshore advanced seismic data processing serv- ices at one of its Data Processing Centres.Accommodation and interior spaces Polarcus Adira is built with a hotel compliment with permanent capacity for60 persons in 32 single and 14 doublecabins. There is a mess room which seats 43, day rooms, internet café, gym andsauna, as well as a hospital, offices and a conference room. There are three crew state cabins, one client state cabin,twenty-eight one-bed cabins, fourteentwo-bed cabins. There are also rooms for dry provision, a cooler and freezer room, and laundries. There is a special helicop- ter reception room. Classification The classification company is Det Norske Veritas. The vessel is designed for environmental friendly operations. The vessel carries the Clean Design no- tation from DNV. A GREEN PASSPORT is issued. Low noise and vibration levels are recorded in the accommodation andon deck. Class notations are Det Norske Veritas
1A1, E0, DYNPOS-AUTR, CLEAN DESIGN, COMF-V(3), ICE-1A*, WINTERIZED BASIC, NAUT- AW, HELDK, BWM-T, TMON, SPS. The vessel carries Bahamas flag. MR#10 (26-33):MR Template 10/2/2012 11:19 AM Page 29