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This is a list of icebreakers and other special icebreaking vessels (except cargo ships and tankers) capable of operating independently in ice-covered waters. Ships known to be in service are presented in bold .
For this reason, in the Baltic Sea, the Great Lakes and the Saint Lawrence Seaway, and along the Northern Sea Route, the main function of icebreakers is to escort convoys of one or more ships safely through ice-filled waters. When a ship becomes immobilized by ice, the icebreaker has to free it by breaking the ice surrounding the ship and, if ...
Polar-class icebreakers USCGC Polar Star (WAGB-10), USCGC Polar Sea (WAGB-11) are heavy icebreakers operated by the United States Coast Guard (USCG). These cutters, specifically designed for icebreaking, have reinforced hulls, special icebreaking bows, and a system that allows rapid shifting of ballast to increase the effectiveness of their icebreaking.
Nuclear icebreaker Yamal, 2015. A nuclear-powered icebreaker is an icebreaker with an onboard nuclear power plant that produces power for the vessel's propulsion system. . Although more expensive to operate, nuclear-powered icebreakers provide a number of advantages over their diesel-powered counterparts, especially along the Northern Sea Route where diesel-powered icebreaker operations are ...
The curved bow allows Polar Star to ride up on the ice, using the ship's weight to break the ice. [ 4 ] The 13,000-ton (13,200-metric ton) Polar Star is able to break through ice up to 21 feet (6.4 m) thick by backing and ramming, and can steam continuously through 6 feet (1.8 m) of ice at 3 knots (5.6 km/h).
Kontio is a Finnish state-owned icebreaker.Built by Wärtsilä Helsinki shipyard in 1987 as a replacement for the aging Karhu-class icebreakers, she and her sister ship Otso were the first Finnish post-war icebreaker to be built without bow propellers.
The United States, Canada and Finland will work together to build up their icebreaker fleets as they look to bolster their defenses in the Arctic, where Russia has been increasingly active, the ...
The Polar Security Cutter Program is a program to recapitalize the United States Coast Guard's aging fleet of icebreakers, currently consisting of the heavy icebreaker USCGC Polar Star and the medium icebreaker USCGC Healy, with three new multi-mission vessels referred to as Polar Security Cutters (PSC).