Experimental Submarine with Propellers Forward The Submarine Torpedo Boat : Its Characteristics And Modern Development - 1916
British Submarine H-20 Built by the Fore River Ship Building Co., and similar to the U.S. Navy II class. Note circular hull The Submarine Torpedo Boat : Its Characteristics And Modern Development - 1916
Forward deck of Submarine G-4. Driving into a swell at full speed The Submarine Torpedo Boat : Its Characteristics And Modern Development - 1916
By courtesy Lake Torpedo Boat Co. Simon Lake's Argonaut First The Submarine Torpedo Boat : Its Characteristics And Modern Development - 1916