An artist’s rendering of the Columbia-class ballistic missile submarine expected to start patrols in 2031. Photo: US Navy
An artist’s rendering of the Columbia-class ballistic missile submarine expected to start patrols in 2031. Photo: US Navy

US Navy building its ‘largest, most advanced’ nuclear sub, as Chinese fleet expands

  • The USS District of Columbia heralds the introduction of a new SSBN fleet to be commissioned in 2027
  • The 12 Columbia-class subs will replace the ageing Ohio-class SSBNs and carry ‘70 per cent of America’s deployed nuclear arsenal’

An artist’s rendering of the Columbia-class ballistic missile submarine expected to start patrols in 2031. Photo: US Navy
An artist’s rendering of the Columbia-class ballistic missile submarine expected to start patrols in 2031. Photo: US Navy
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