USS Columbia (SSN-771)

For other ships with the same name, see USS Columbia.
Not to be confused with USS Columbus (SSN-762).

USS Columbia (SSN-771)
USS Columbia (SSN-771)
History
United States
NameUSS Columbia
NamesakeCities of Columbia, South Carolina, Columbia, Missouri, and Columbia, Illinois
Awarded14 December 1988
BuilderGeneral Dynamics Electric Boat
Laid down21 April 1993
Launched24 September 1994
Sponsored byHillary Clinton
Christened24 September 1994
Completed24 September 1994
Commissioned9 October 1995
HomeportNaval Station Pearl Harbor
MottoPreserving Freedom On The Seas
Statusin active service
Badge
General characteristics
Class and typeLos Angeles-class submarine
Displacement
  • 6,000 long tons (6,096 t) light
  • 6,927 long tons (7,038 t) full
  • 927 long tons (942 t) dead
Length110.3 m (361 ft 11 in)
Beam10 m (32 ft 10 in)
Draft9.4 m (30 ft 10 in)
Propulsion
  • 1 × S6G PWR nuclear reactor with D2W core (165 MW), HEU 93.5%[1][2]
  • 2 × steam turbines (33,500) shp
  • 1 × shaft
  • 1 × secondary propulsion motor 325 hp (242 kW)
SpeedSurface: About 15 knots. Submerged: About 32 knots.
Complement12 officers, 110 men
Armament
  • 4 × 21 in (533 mm) torpedo tubes
  • 12 x Vertical Launch Missile Tubes

USS Columbia (SSN-771) is the 21st flight III, or Improved (688i) Los Angeles-class attack submarine of the United States Navy. Commissioned in 1995, the submarine is assigned to Submarine Squadron 7 and homeported in Joint Base Pearl Harbor-Hickam.[3]

Columbia is the eighth U.S. warship to bear the name, though the first to be named for three cities: Columbia, Illinois, Columbia, Missouri and Columbia, South Carolina.

The contract to build Columbia was awarded to the Electric Boat Division of General Dynamics Corporation in Groton, Connecticut, on 14 December 1988 and her keel was laid down on 21 April 1993. She was the 33rd Los Angeles-class boat built by Electric Boat, and was launched on 24 September 1994 with the slide down a 1,300-foot wooden ramp, the last American submarine to do so, giving her the title of "The Last Slider". Columbia was sponsored by Hillary Clinton, and commissioned on 9 October 1995.

  1. ^ "International Panel on Fissile Materials". fissilematerials.org. 10 April 2020. Retrieved 27 February 2022.
  2. ^ "Validation of the Use of Low Enriched Uranium as a Replacement for Highly Enriched Uranium in US Submarine Reactors" (PDF). dspace.mit.edu. June 2015. Retrieved 27 February 2022.
  3. ^ "About USS Columbia | USS Columbia | SSN 771 | Submarine Squadron 7 | COMSUBPAC". www.csp.navy.mil. Retrieved 5 June 2022.