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General Dynamics Electric Boat Other product

Columbia-Class Ballistic Missile Submarine

Model Columbia class (SSBN)

12-ship SSBN class replacing the Ohio class; Electric Boat is prime contractor and performs about 78% of construction. Nuclear, electric drive propulsion.

Description

Electric Boat is the prime contractor on the design and construction of the 12-ship Columbia class, performing about 78% of the construction, with Huntington Ingalls Newport News Shipbuilding building the bow and stern. The class replaces the Ohio-class SSBNs and will be the largest submarines built by the United States, two-and-a-half times the size of Virginia-class boats.

Key features

  • Life-of-ship reactor, eliminating refueling
  • First ballistic-missile submarines designed for modular construction
  • QUAD Pack technique outfits four missile tubes in a factory environment, raising missile compartment modular construction to more than 85%
  • Displacement: 20,810 long tons (submerged)
  • Length: 560 feet; hull diameter 43 feet
  • Speed: 20+ knots; diving depth 800+ feet
  • 16 missile tubes, Trident II D5 (LE)
  • Propulsion: nuclear, electric drive

Applications

Strategic deterrence for the U.S. Navy as the successor to the Ohio-class SSBN fleet.

Specifications

Displacement20,810 long tons (submerged)
Length560 feet
Hull Diameter43 feet
Speed20+ knots
Diving Depth800+ feet
Missile Tubes16
PropulsionNuclear, Electric Drive
MissileTrident II D5 (LE)
Ships in class12

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