Porpoise-class Patrol Submarine

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The Porpoise-class was an eight-boat class of diesel-electric submarines operated by the Royal Navy. This class was originally designated patrol submarines, then attack. They were the first conventional British submarines to be built after the end of World War II. Their design was, in many ways, influenced by the German World War II-era Type XXI U-boats. They were followed on by the Oberon-class.

Unit Run[edit | edit source]

  • HMS Porpoise (S01)
  • HMS Rorqual (S02)
  • HMS Narwhal (S03)
  • HMS Grampus (S04)
  • HMS Finwhale (S05)
  • HMS Cachalot (S06)
  • HMS Sealion (S07)
  • HMS Walrus (S08)