British T-class submarine
1938 CLASS OF BRITISH SUBMARINES
Triton class submarine; HMS Thor (P349); Tempest class submarine; Taciturn class submarine; British t class submarine; Zwaardvisch class submarine; British Triton-class submarine; British Triton class submarine; HMS Thor; British T class submarine; Zwaardvisch-class submarine; Triton-class submarine
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.