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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.
The Japan Agency for Marine-Earth Science and Technology (JAMSTEC) is in the process of acquiring a new PC 4 rated icebreaker for researching the Arctic region. [26] The Swedish Maritime Administration is in the process of acquiring 2–3 new icebreakers rated PC 4 Icebreaker(+). [27] The first icebreaker is expected to enter service in 2027. [28]
[26] [27] With a total propulsion power of 60 megawatts (80,000 hp), Chukotka is designed to be capable of breaking 2.8 metres (9 ft) thick level ice at a continuous speed of 1.5–2 knots (2.8–3.7 km/h; 1.7–2.3 mph) at full power when operating in deep water at design draught.
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The icebreaker was launched as Sibir, Russian for Siberia, on 22 September 2017. [3] Previously, the name had been used on the second Arktika -class icebreaker that was in service in 1977–1992. Initially, the delivery of the second Project 22220 nuclear-powered icebreaker was scheduled for 2018, [ 5 ] but this had to be postponed due to ...
In full scale ice trials in the Gulf of Bothnia, the river icebreaker was successfully tested in level ice up to 70 centimetres (28 in) thick. Ridge penetration tests showed that Röthelstein could overcome ridges varying between 1.5 and 3.6 metres (4.9 and 11.8 ft) in thickness when the icebreaker proceeded in astern direction and utilized the ...
The museum was originally an icebreaker ordered from Sir V G Armstrong, Vitvort and Co. ship company in Newcastle, United Kingdom in 1898. On 1 August 1900, the ship was put into operation and operated in Lake Baikal. [1] It was used by the Soviet Union until 1949 before it underwent 11 years of reparation. In March 1991, the ship was turned ...
Project 22220, also known through the Russian type size series designation LK-60Ya, [note 1] is a series of Russian nuclear-powered icebreakers.The lead ship of the class, Arktika, was delivered in 2020 and surpassed the preceding Soviet-built series of nuclear-powered icebreakers as the largest and most powerful icebreaker in the world.