T (AA, Schley) class submersibles (1918)
USA (1917-30) T-1 to T-3, AA-1 to AA-3 fleet submersibles The T-1 class submarines (previously known AA-1 class) were the first attempt by the USN to build a fleet submersible. It was planned in 1913 already to operate with the new Delaware class, the first “standard battleships”, with a surface speed of 21 knots to … Read more