A great promo video of the world's most powerful submarine fleet. Composition of the current force
Ohio class (18 in commission) — 14 ballistic missile submarines (SSBNs), 4 guided missile submarines (SSGNs)
Virginia class (11 in commission, 5 under construction, 2 on order) — fast attack submarines
Seawolf class (3 in commission) — attack submarines
Los Angeles class (43 in commission, 2 in reserve) — attack submarines
Fast attack submarines
The U.S. has 43 Los Angeles-class submarines on active duty and 19 retired, making it the most numerous nuclear-powered submarine class in the world. The class was preceded by the Sturgeon class and followed by the Seawolf and Virginia classes. Except for USS Hyman G. Rickover (SSN-709), submarines of this class are named after U.S. cities, breaking a Navy tradition of naming attack submarines after sea creatures.