Royal Navy (RN) Submarines
List of Royal Navy (RN) submarines in World War II.

S-class submarine
HMS Spark (P236)  scrapped 1950
HMS Spirit  scrapped 1950
HMS Shakespeare (P221)  scrapped 1946
HMS Storm (P233)  scrapped 1949
HMS Stoic  scrapped 1950
HMS Supreme  scrapped 1950

T-class submarine (Triton class)
HMS Taciturn (P314)  scrapped August 1971
HMS Tantalus (P318)  scrapped 1950
HMS Tantivy (P319)  sunk as target 1951
HMS Thorough (P324)  scrapped June 1962
HMS Tradewind (P329)  scrapped 1955
HMS Trenchant (P331)  scrapped 1963

Grampus-class submarine
HMS Porpoise (N14)  sunk Janaury 11, 1945 by aircraft off Penang