page_title: List of submarines of the Royal Navy
section_title: Pre-Second World War
hierarchical_section_title: List of submarines of the Royal Navy / Pre-Second World War
caption_attribution_description: British T class submarine HMSM THORN underway on the River Mersey on completion.
context_page_description: This is a list of Royal Navy submarines, arranged chronologically. Submarines that are currently active and commissioned are shown below in bold.
context_section_description: D class
  E class
  F class
  S class
  V class
  W class
  G class
  H class
  J class
  K class
  HMS K1
  HMS K2
  HMS K3
  HMS K4
  HMS K5
  HMS K6
  HMS K7
  HMS K8
  HMS K9
  HMS K10
  HMS K11
  HMS K12
  HMS K13
  HMS K14
  HMS K15
  HMS K16
  HMS K17
  HMS K26
  L class
  M class
  HMS M1
  HMS M2
  HMS M3
  HMS M4
  Nautilus class
  R class
  Swordfish class
  HMS X1
  Odin class
  Parthian class
  HMS Pandora (N42)
  HMS Parthian (N75)
  HMS Perseus (N36)
  HMS Phoenix (N96)
  HMS Poseidon (P99)
  HMS Proteus (N29)
  Rainbow class
  S class
  River or Thames class
  HMS Thames (N71)
  HMS Severn (N57)
  HMS Clyde (N12)
  Grampus class
  T class
caption: HMS Thorn
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