USCGC Polar Sea

History
United States
Builder	Lockheed Shipbuilding and Construction Company, Seattle, WA
Commissioned	23 February 1978
Identification	IMO number: 7391252
Motto	Always Summer, Never Warm
Nickname(s)	Building 11, Polar Roller, What a Great Boat, Wandering Arctic Garbage Barge, Red Tubs of Fun, We Always Go Bye-Bye
Status	Out of service since 2010
General characteristics
Class & type	Polar-class icebreaker - Heavy
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)
Draft	31 ft (9.4 m)
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;
Aircraft carried	2 HH-65C Dolphin helicopters

USCGC Polar Sea (WAGB-11) is a United States Coast Guard heavy icebreaker. Commissioned on 23 February 1978, the ship was built by Lockheed Shipbuilding and Construction Company of Seattle along with her sister ship, Polar Star (WAGB-10). Her home port is Seattle, Washington.

Polar Sea has been out of service as of 2010 due to failure of five of her six Alco main diesel engines. Between 2010 and 2023, the Polar Sea has been used as a parts donor for sister ship the Polar Star. In 2024, the ship was towed to and placed in mothball status in Suisun Bay, California.