T-class Submarine


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Ships in class: 53

The Royal Navy's T class (or Triton 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 War, where they played a major role in the Royal Navy's submarine operations. Four boats in service with the Royal Netherlands Navy were known as the Zwaardvisch class.

The ten-torpedo salvo was the largest ever fitted to an operational submarine.[4] British operational planning at the time assumed international treaties would prevent unrestricted submarine warfare, and the main purpose of the submarine would be to attack enemy warships. In such a situation, a commander may only have had one chance to attack, so a large salvo was essential.