Page 40: of Maritime Reporter Magazine (December 2012)

Polarcus Limited received its eighth 3D seismic vessel in June, when Polarcus Adira was delivered at Ulstein Verft in Norway. The vessel is the second of two 12-14 streamer Arctic 3D seismic vessels built at the yard, and is the eighth vessel in the Polarcus fleet of the Ulstein SX134design, characterized by the sleek UlsteinX-bow hull design. Sistership Polarcus Amani was delivered by the yard at the end of March. Earlier vessels were built under license by Drydocks World Dubai LLC, and include Polarcus Nadia (2009),and Polarcus Naila (2010), 12 streamervessels of type SX124, Polarcus Asima (2010) and Polarcus Alima (2011), 12 streamer vessels of type SX134, Polarcus Samur (2011) and the Russian flag ves- sel Vyacheslav Tikhonov (2011), 8 streamer vessels of type SX133. All ves- sels are designed by Ulstein Design andSolutions AS. Following a short shake- down Polarcus Adira commencd ops on charter for TGS-NOPEC Geophysical Company ASA (TGS). Polarcus Limited operates a fleet ofhigh performance 3D/4D seismic vessels. The hull of Polarcus Adira and Polarcus Amani were built at Kerch Shipyard Zaliv in Ukraine. As is the custom for the ships built by Ulstein Verft shipyard in Ulsteinvik. This was the seventh hull built at the yard. The vessels are equipped with streamer winches, towing points and gun winches. The X-bow hull line design, combined with a redundant diesel-electric propul-sion system, ensures good performancewith regard to speed and fuel consump- tion. Polarcus Adira measures 92 x 21, with a depth to main deck is 9m, a designdraft is 6.5m and maximum draft 7.5 m.The deadweight at maximum draught is4,472dwt. Gross tonnage is 7709GT andnet tonnage 2313NT. The vessel is equipped with a helideck (D-value 22.2 m, 12t, UK-CAA CAP- 437 suitable for Sikorsky S-61N / S-92) for added safety and to ensure an efficient crew change, and is built according to IMO code of safety for Special PurposeShips (SPS), enabling it to operate world- wide. The vessel has two workboats, by Westplast, and a Norsafe MOB boat on- board and six life rafts each for 35 per- sons with dedicated davit. The vessel has diesel-electric propul- sion. The main propulsion system com- prises two Wärtsilä 9L26 main diesel generators, each 2920ekW at 1000rpm,plus four Wärtsilä 9L20 1710ekW diesel generators, at 1000rpm. The generators are supplied by ABB. The total power is 12,680ekW. There are two propellers of controllable pitch type in nozzles, theshaft line of each driven by two variable speed electric motors through twin in-sin-gle out reduction gears type ScanaPropulsion ACGTS 1000. All diesel engines have selective cata- lyst reactor (SCR) units, supplied byH+H Umwelt, to reduce NOx emissions.NO2 emissions are reduced by some 90%to 98%, soot by 20% to 30% and hy- drocarbon emissions by 80% to 90%.There are two ABB electric propulsion motors in parallel configuration on each side, each motor 0-2200ekW, 0-1000rpm. The two controllable pitch propellers in nozzles, supplied by Scana Propulsion,each absorb 4400kW at 160rpm and have a diameter of 3700mm. There is an Cater- pillar emergency generator with a power of 240ekW. The vessel runs on marine gas oil (MGO) with low sulphur content. The Fuel oil (MDO) capacity is 2030 cu.m.and fresh water capacity 1032 cu.m.. The vessel can also carry ballast water/tech. fresh water 2170 cu.m., lube oil 63 cu.m., and urea for the catalysts reactors 289cu.m. Towing pull in seismic operation is 82t. Bollard pull exceeds 125t. Polarcus Adira has a maximum speed of 17 knots, at5.5m draft. There is one 1200kW tunnel thrusterforward equipped with a controllable pitch propeller and one 850 kW re-tractable azimuth thruster forward. There is one tunnel thruster aft, 830 kW, con- trollable pitch.The vessel is equipped with a roll damping tank system. There are two fresh water generators, each producing 15 cu.m./24h. There are two fuel oil sep- arators, self cleaning type and three lubeoil separators. In addition there is onemobile hydraulic oil separator and a USCG approved bilge water separator. A ballast water treatment system is in- stalled. Ulstein Power & Control has de- livered the switchboards 690V, 400V and 230V, the emergency switchboard, and the communication and information sys-tem type Ulstein COM to the vessel. The vessel has a Kongsberg Maritime Dynamic positioning system, DP2 type,and has two DGPS, and a radius refer- ence system. There is preparations for Kongsberg's HiPAP 500 high precision acoustic positioning. The integrated au- tomation system is supplied by HøglundMarine Automation. Polarcus Adira is an Arctic-ready vessel designed and built for operations in Arctic waters carrying the ICE-1A* and Winterized Basic notations from Det Norske Veritas, the classifica- tion company of these vessels. Polarcus Adira can operate in first-year ice of up to 1 metre thickness without the assistanceof icebreaker. The hull is ice-reinforced 40Maritime Reporter & Engineering News Great Shipsof 2012(Photo credit Ulstein Group Per Eide) Polarcus Adira & Amani Builder: Ulstein Verft  Owner: Polarcus MR#12 (34-41):MR Template 12/4/2012 2:24 PM Page 40