Page 28: of Maritime Reporter Magazine (October 2012)

28Maritime Reporter & Engineering News Marine designgenerators, at 1000rpm. The generators are supplied by ABB. The total power is 12,680ekW. There are two propellers of controllable pitch type in nozzles, the shaft line ofeach driven by two variable speed elec- tric motors through twin in-single out re-duction gears type Scana PropulsionACGTS 1000. All diesel engines have selective catalyst reactor (SCR) units, supplied by H+H Umwelt, to reduceNOx emissions. NO2 emissions are re-duced by some 90% to 98%, soot by20% to 30% and hydrocarbon emis- sions by 80% to 90%. There are two ABB electric propulsion motors in paral- lel configuration on each side, each motor 0-2200ekW, 0-1000rpm. The two controllable pitch propellers in nozzles,supplied by Scana Propulsion, each ab-sorb 4400kW at 160rpm and have a di- ameter of 3700mm. There is an Caterpil- lar 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. Polar- cus Adira has a maximum speed of 17 knots, at 5.5m 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. Switchboards, navigation and DP Ulstein Power & Control has delivered the switchboards 690V, 400V and 230V, the emergency switchboard, and the com- munication and information system typeUlstein COM® to the vessel. Alse the bridge control and navigation system is of Ulstein delivery. The vessel has a Kongsberg Maritime Dynamic position- ing system, DP2 type, and has two DGPS, and a radius reference system.There is preparations for Kongsberg's HiPAP 500 high precision acoustic posi- tioning. The integrated automation sys- tem is supplied by Høglund MarineAutomation. Arctic class Polarcus Adira is an Arctic-ready vessel designed and built for operations in Arc- tic waters carrying the ICE-1A* and Win- terized Basic notations from Det Norske Veritas, the classification company of these vessels. Polarcus Adira can operate in first-year ice of up to 1 metre thickness without the assistance of icebreaker. The hull is ice-reinforced and the vessel has de-icing and ice-preventing systems at (Photo credit_Ulstein Group, Vasco Pinhol) The new Polarcus vessel is well outfitted for work above the water and below, with its ultra modern bridge system (above left) & seismic room (above right). MR#10 (26-33):MR Template 10/2/2012 11:17 AM Page 28