The F-class submarines were a group of four submarines designed for the United States Navy by Electric Boat in 1909. F-1 and F-2 were built by Union Iron Works, in San Francisco, while F-3 and F-4 wer
These boats are (from front to back): USS F-4, ex-Skate, F-2, ex-Barracuda, F-3, ex-Pickerel, and F-1, ex-Carp, in Honolulu, Territory of Hawaii, in 1914. Note the "fish" flags and 13-star "boat" ensigns flown by these submarines.
The C-class submarines were five United States Navy submarines built by the Fore River Shipbuilding Company in Quincy, Massachusetts, under a subcontract from the Electric Boat Company. Built between
USS Tarpon, 1909