British U-class submarine
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The British U-class submarines were a class of 49 small submarines built just before and during the Second World War. The class is sometimes known as the Undine class, after the first submarine built.
U-class submarine HMS Ultimatum departing Holy Loch, August 1943
British T-class submarine
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The Royal Navy's T class of diesel-electric submarines was designed in the 1930s to replace the O, P, and R classes. Fifty-three members of the class were built just before and during the Second World
HMS Thorn
Drawing of the docking plans for late Tiptoe, Trump, Taciturn, Tapir, Teredo, Theban and Tijgerhaai
On board HMS Tribune in 1942
INS Leviathan (formerly HMS Turpin) and INS Dolphin (formerly HMS Truncheon) at Haifa port, in 1968.