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USCG Polar class icebreaker

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USCG Polar class icebreaker

This article is about United States Coast Guard icebreakers. For other vessels referred to as Polar-class icebreakears, see Polar-class icebreaker (disambiguation).

Polar class

USCG Polar Star
Class overview
Builders: Lockheed Shipbuilding and Construction Company, Seattle, WA
Operators: United States Coast Guard
Preceded by: USCGC Glacier
Succeeded by: USCGC Healy
Built: 1972–1978
In service: 1976–
Completed: 2
Active: 1
Laid up: 1[1]
General characteristics [2]
Type: Icebreaker
Displacement: 10,863 long tons (11,037 t) (standard)
13,623 long tons (13,842 t) (full)
Length: 399 ft (122 m)
Beam: 83 ft 6 in (25.45 m)
Height: 137 ft 10 in (42 m) (from waterline)
Draft: 31 ft (9.4 m)[3]
Installed power: Six Alco 16V-251F diesel engines (6 × 3,000 hp)
Three Pratt & Whitney FT-4A12 gas turbines (3 × 25,000 hp)
Propulsion: Combined diesel-electric or gas (CODLOG)
Three shafts; controllable pitch propellers
Speed: 18 knots (33 km/h; 21 mph)
3 knots (5.6 km/h; 3.5 mph) in 6-foot (1.8 m) ice
Range: 16,000 nautical miles (30,000 km; 18,000 mi) at 18 knots (33 km/h; 21 mph)
28,275 nautical miles (52,365 km; 32,538 mi) at 13 knots (24 km/h; 15 mph)
Complement: 15 officers
127 enlisted
33 scientists
12-person helicopter detachment
Aviation facilities: Helipad and hangar

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 open-water icebreaking, have reinforced hulls, special icebreaking bows, and a system that allows rapid shifting of ballast to increase the effectiveness of their icebreaking. The vessels conduct Arctic and Antarctic research and are the primary icebreakers that clear the channel into McMurdo Station for supply ships. All are homeported out of Seattle, Washington.

In addition to the two Polar-class icebreakers, the USCG has a third polar-capable icebreaker, USCGC Healy (WAGB-20).[4]

References

External links

  • USCG Cutter Datasheet


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