See also USN Retired – Submarines
Nuclear-powered Ballistic Missile SSBN
Check out our 2022 comparative overview post on World ballistic missile boats.
Ohio Class LOA 560′ / 170.7 m TDISP 18,750 tons submerged. (18 active, service since 1981, Now includes 4 converted to Guided missile submarines SSGN) 24 MIRV-equipped SLBM tubes/boat. The SSGN version now has 22 tubes with 7 tomahawk missiles in each.
Nuclear-powered Attack Submarines SSN
Virginia Class LOA 377′ / 114.9 m TDISP 7,900 tons submerged (20 active, many building, service since 2004) These were built in blocks, with some significant improvements. Block III and IV are fitted with two Virginia Payload Tubes (VPTs) forward of sail, which replace the 12 separate VLS tubes on earlier boats. These carry cruise missiles. Block V, currently on order, will be thousands of tons heavier and up to 460’ / 140.2 m long and more heavily-armed with Virginia Payload Module (VPM), a lengthened midships section with up to four (more) VPTs. In addition to a heavier complement of Tomahawk cruise missiles, to help maintain capability as the modified Ohio-class cruise missile boats retire, these VPMs could carry unmanned underwater vehicles or mini-submersibles, or eventually carry next-generation missiles.
Block I or II
Block IV, showing Virginia Payload Tube (VPT) hatches (large circular hatches) forward of the sail. These carry Tomahawk cruise missiles. These have been fitted to Block III and later boats.
Seawolf Class LOA 353′ / 107.6 m TDISP 9,130 tons submerged (3 built, one to a lengthened design, service since 1997)
USS Jimmy Carter SSN-23 (2005) Longer variant of Seawolf. LOA 453′ / 138.1 m TDISP 12,100 tons submerged. The additional section allows for multiple missions, and can house a Remotely Operated Vehicle or Navy Seal team members.
Los Angeles Class SSN LOA 362′ / 110.3 m TDISP 7,000 tons submerged. (62 built, ca. 34 retired, service since 1976). Older units of class, retired or soon to retire, have the diving planes fitted to the sail. Many other upgrades were added through the long life of these attack boats, including the installation of 12 VLS tubes forward of the sail.
Continue to Amphibious Warfare Ships (does not include Amphibious Assault Ships)