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British S Class Submarine (1931)




The ''S'' class was the largest single group of submarines ever built for the Royal Navy. A total of 62 were constructed over a period of 15 years; fifty of the "improved" ''S''-class were launched between 1940 and 1945 .


SERVICE

Besides action in Home waters and "the Med", S class submarines served in the Far East when fitted with extra tankage.

Post war the S class boats were serving with the RN into the 1960s . The last boat in full commission was HMS ''Sea Devil'' in 1965.

Several S-class submarines were sold on to other navies:
  • Netherlands 1

  • Portugal 3

  • France 4

  • Israel 2.




SERVICE LOSSES


Of the twelve ''S''-boats that were in service in 1939 , only three survived to see the end of World War II , a loss rate that inspired the song 'Twelve Little S-Boats', based on a Nursery Rhyme originally written by Septimus Winner in 1868 . The survivors were ''Sealion'', ''Seawolf'' and ''Sturgeon''.

:Twelve little ''S''-boats 'go to it' like Bevin ,
:: ''Starfish'' goes a bit too far — then there were eleven.
:Eleven watchful ''S''-boats doing fine and then
:: ''Seahorse'' fails to answer — so there are ten.
:Ten stocky ''S''-boats in a ragged line,
:: ''Sterlet'' stops and drops out — leaving us nine.
:Nine plucky ''S''-boats, all pursuing fate,
:: ''Shark'' is overtaken — now we are eight.
:Eight sturdy ''S''-boats, men from Hants and Devon ,
:: ''Salmon'' now is overdue — so the number's seven.
:Seven gallant ''S''-boats, trying all their tricks,
:: ''Spearfish'' tries a newer one — down we come to six.
:Six tireless ''S''-boats fighting to survive,
::No reply from ''Swordfish'' — so we tally five.
:Five scrubby ''S''-boats, patrolling close inshore,
:: ''Snapper'' takes a short cut — now we are four.
:Four fearless ''S''-boats, too far out to sea,
:: ''Sunfish'' bombed and scrap-heaped — we are only three.


GENERAL CHARACTERISTICS


First Group

  • Displacement: 640 tons surfaced, 935 tons submerged

  • Length: 202 feet 6 inches

  • Beam: 24 feet

  • Draught: 10 feet 6 inches

  • Speed: 13.75 knots surfaced, 10 knots submerged

  • Armament: six forward 21-inch torpedo tubes, twelve torpedoes, one three-inch gun; one .303-calibre machinegun

  • Complement: 36 officers and men



Second Group

  • Displacement: 670 tons surfaced, 960 tons submerged

  • Length: 208 feet 9 inches

  • Beam: 24 feet

  • Draught: 10 feet 6 inches

  • Speed: 13.75 knots surfaced, 10 knots submerged

  • Armament: six forward 21-inch torpedo tubes, twelve torpedoes, one three-inch gun; one .303-calibre machinegun

  • Complement: 39 officers and men



Third Group

  • Displacement: 814-872 tons surfaced, 990 tons submerged

  • Length: 217 feet

  • Beam: 23 feet 6 inches

  • Draught: 11 feet

  • Speed: 14.75 knots surfaced, 8 knots submerged

  • Armament: six forward 21-inch torpedo tubes, one aft, 13 torpedoes, one three-inch gun (four-inch on later boats); one 20 mm cannon, three .303-calibre machinegun

  • Complement: 48 officers and men