Nuclear-powered ballistic-missile submarine USS OHIO (SSGN-726) prior to her first patrol, Naval Submarine Base, Bangor Washington, 1982 / lead sub of her class. [1512×2048]

Nuclear-powered ballistic-missile submarine USS OHIO (SSGN-726) prior to her first patrol, Naval Submarine Base, Bangor Washington, 1982 / lead sub of her class. [1512×2048]

Workers gather near Suffren, a Barracuda-class nuclear attack submarine in Cherbourg-Octeville, northwestern France, on July 9, 2017 [1200 × 800]

Workers gather near Suffren, a Barracuda-class nuclear attack submarine in Cherbourg-Octeville, northwestern France, on July 9, 2017 [1200 × 800]

A bow view of the nuclear-powered attack submarine USS Miami (SSN-755) high and dry in the auxiliary medium repair dock Shippingport (ARDM-4) undergoing a routine hull inspection, March 16, 1994. [2850 x 1900]

A bow view of the nuclear-powered attack submarine USS Miami (SSN-755) high and dry in the auxiliary medium repair dock Shippingport (ARDM-4) undergoing a routine hull inspection, March 16, 1994. [2850 x 1900]

USCGC Paulding (CG-17) on the marine railway at the Boston Navy Yard, December 1927 / bow damage from collision with submarine USS S-4 (SS-109) which was lost with all hands. [892×1115]

USCGC Paulding (CG-17) on the marine railway at the Boston Navy Yard, December 1927 / bow damage from collision with submarine USS S-4 (SS-109) which was lost with all hands. [892×1115]