Submarine class S
S-Class denotes five submarine ship classes:
- Three Royal Navy submarines built by Scotts Shipbuilding and Engineering Company in Greenock between 1914 and 1915, see submarine class S (Royal Navy, 1914)
- Three submarines of the Italian Navy built by Fiat Laurenti ( La Spezia ) between 1914 and 1919, see submarine class S (Italy)
- 51 US submarines built between 1918 and 1925, see S-Class (United States Navy)
- 62 British submarines built in the 1930s and 1940s, see submarine class S (Royal Navy, 1931)
- for their history, see history of the submarine class S (Royal Navy, 1931)
- 56 Soviet submarines built from 1939, see Srednjaja class (informal name Stalinez class)