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www.marinelink.com 55The icebreaking capability is 1.5m. The four main diesel-generator sets have a total power of 27MW. The total propul- sion power is 18MW. ?This order is very important for Arctech Helsinki Shipyard. It gives us a good base work load for the next two years,? said Esko Mustamäki, Managing Director of Arctech Helsinki Shipyard. Breaking Ice Sideways Another special vessel under construc-tion is a multipurpose emergency rescue vessel and icebreaker, due to be deliv- ered early next year. The contract was awarded together with Shipyard Yantar JSC, a shipyard part of USC in Kalinin-grad by the Baltic Sea, which is build-ing the hull of the vessel. The out Þ tting and commissioning of the vessel will be done by Arctech in Helsinki. The vessel represents a completely new type of ship, both regarding icebreaking as well as oil spill combating technol-ogy. The design of the vessel is based on the ARC100 concept which Aker Arctic Technology has developed for Arctech Helsinki Shipyard. It features a patented oblique design with asymmetric hull and three azimuthing propulsors, which allow the vessel to operate efÞ ciently ahead, astern and obliquely, or sideways. The vessel can break 1m thick level ice with a constant speed of three knots both going ahead and astern and will be able to generate a 50m wide broken channel when proceeding in 0.6m thick level ice in oblique mode. The diesel-electric ves- sel will be used for icebreaking and oil recovery tasks. Three main diesel-gener- ator sets have the total power of 9.0MW. The total propulsion power is 7.2MW, providing power for three Steerprop azi-muthing thrusters. Aker Arctic Technology Aker Arctic Technology, AARC, the Finnish engineering company special-izing in developing ice-going ships and offshore structures for any cold regions, is operating as an independent consul-tancy. It is owned by STX Finland with ABB and Aker Solution as minority shareholders. Aker Arctic operates an ice model basin in Helsinki. Over the years, hundreds of icebreakers and Arc- tic offshore structures have been tested and developed by Aker Arctic. In addi- tion to the oblique icebreaker also the double-acting icebreaking principle, where the vessel breaks ice going astern using azimuthing propulsion, and thus saving much power, has been among the developments of the company. A number of vessels have been built using the DAS double-acting ship concept, such as Arc- tic container vessels, for Norilsk Nickel, and Arctic shuttle tankers, for Sovcom- ß ot, icebreakers and cargo vessels. Recent icebreaking ships designed include the shallow draft icebreaking tug type ARC104, Þ ve vessels of which have been built for year-round operation in the Northern Caspian Sea, by Vard Braila Shipyard in Romania, for Cas-pian Offshore Construction. Aker Arctic is currently engaged in projects for the Sakhalin Region and has also partici-pated in the tender design of a newbuild-MR #6 (50-57).indd 55MR #6 (50-57).indd 555/31/2013 9:58:00 AM5/31/2013 9:58:00 AM
