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Polar Class (PC) refers to the ice class assigned to a ship by a classification society based on the Unified Requirements for Polar Class Ships developed by the International Association of Classification Societies (IACS). Seven Polar Classes are defined in the rules, ranging from PC 1 for year-round operation in all polar waters to PC 7 for ...
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.
Finally, vessels intended for icebreaking as their main purpose could be assigned an additional class notation "Icebreaker" after the ice class, e.g. POLAR-10 Icebreaker. [6] Following the merger of Det Norske Veritas and Germanischer Lloyd in 2013, the old Det Norske Veritas ice class rules were superseded by new DNV GL ice classes. [7]
USCGC Polar Star (WAGB-10) is a United States Coast Guard heavy icebreaker. Commissioned in 1976, the ship was built by Lockheed Shipbuilding and Construction Company of Seattle , Washington along with sister ship , USCGC Polar Sea .
In February 2023, she set a record by sailing further south than any ship before, achieving 78°44•280´S in the Bay of Whales, which was made possible by an unusual lack of ice. [3] Between 1999 and 2019, she was the British Antarctic Survey (BAS) logistics ship, primarily used for the resupply of scientific stations in the Antarctic .
[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.
Glacier in 1956.. Glacier was essentially an improved Wind-class icebreaker, larger and more powerful.Like them, her entire hull was designed for great strength. With a relatively short length in proportion to the great power developed, her bow had the characteristic sloping forefoot that enabled her to ride up on heavy ice and break it with the weight of the vessel.
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).