Equipment / Naval / Columbia-class SSBN

Columbia-class SSBN

Submarineconfirmed

Columbia-class SSBN

The Columbia class will replace the Ohio-class SSBNs as America's new nuclear ballistic missile submarine fleet. Each will carry 16 Trident II D5LE missiles — four fewer tubes than Ohio but with longer hull life (42 years vs 30). Will incorporate a nuclear-powered electric drive for quieter operation.

Specifications

TypeSubmarine
OriginUnited States
ManufacturerGeneral Dynamics Electric Boat
Introduced2031
StatusIn development
Range999,999
Weight21,000
Crew155

History

Contract awarded 2017. Keel laid for lead boat 2020. Delivery expected 2027, operational patrol 2031. Will cost ~$9.6 billion per submarine. 12 submarines planned to replace 14 Ohio SSBNs.

Operators

CountryQuantityConfidence
United Statesunder construction, IOC 2031confirmed

Text adapted from Wikipedia, available under CC BY-SA 4.0. Photo from Wikimedia Commons; see the Wikipedia article for author and license.

Related

Virginia-class Submarine
Virginia-class Submarine
Submarine
Dry Combat Submersible
Dry Combat Submersible
Submarine
Hai Shih
Hai Shih
Submarine
Los Angeles-class submarine
Los Angeles-class submarine
Submarine