S Class

Group Three 1940 Programme

Medium Patrol Submarine

  • S Class Submarine
  • Seadog
  • Seanymph
  • Searover
  • Seraph
  • Shakespeare
  • Sibyl
  • Sickle
  • Simoom
  • Sirdar
  • Spiteful
  • Splendid
  • Sportsman
  • P222
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In the late 1920's and early 1930's it was decided that two main type of patrol submarine would meet the future requirements of the Long Range Overseas Patrol Submarine, a medium sized type for confined waters and a slightly larger one for overseas.

Having learned from past experience that external fuel tanks were not ideally suited the decision was taken that all future construction of submarines should have their fuel tanks internally built.   It was intended to maintain the quick diving and the manageable handling of the 'H' class whilst submerged, combined with the long range qualities of the 'O','P' and 'R' classes.

The result was the 'S' class. This class was in production for over 15 years and was the largest single group of submarines built for the Royal Navy.

There were three distinct groups in this class with varying differences as will be seen within the class notes and individual boat profiles.

13 Built

Seadog
Sea Nymph
Sibyl
Sickle
Simoon

Cammell Laird, Birkenhead.
1940 - 1945
Spiteful

Scotts, Greenock.
1941 - 1945
P.222
Seraph
Sea Rover
Shakespeare
Sirdar

Vickers, Barrow-in-Furness.
1940 -1941
Splendid
Sportsman
H.M. Dockyard,
Chatham.
1941 - 1943

 














Technical Information

Displacement:
715 sf
990 sm

Length (ft):
217 oa

Breadth (ft):
23.75

Draught/Height (ft):
13.25

Machinery:
8 cylinder Admiralty diesel engines 1,900 bhp
Admiralty electric motors 1,300 bhp

Speed (kts):
14.75 sf
9 sm

Oil Supply (tons):
67 (92 max).

Armament:
Some were fitted with a 4 inch gun plus 1 x 20 mm AA gun, 3 x mg.
6 x 21 inch bow tubes plus 1 stern tube.
13 reloads or 12 Mines

Range:
6,000 miles at 10 kts sf

Complement:
48
P222