100 YEARS OF BARROW-BUILT RN SUBMARINES, 1901-2001
S CLASS, 1930-1963

MAIN PARTICULARS

Length overall                    217 ft
Beam                                23 ft 6 in
Depth                               11 ft
Displacement,
  surface                           872 tons
  submerged                      990 tons
Diving depth                      350 feet
No. of shafts                     2
Speed, surface:
  design                            15 knots 
  service                           14.75 knots 
Speed, submerged:
  design                            10 knots 
  service                           9 knots 
Endurance, surface:
  design                            6000 miles at 10 knots
Endurance, submerged:
  design                            Details unknown
Armament*                        6 21-inch bow tubes
                                       1 21-inch stern tube
                                       (13 torpedoes carried)
                                       1 3-inch gun
                                       3 0.303-inch machine-guns
                                       1 20mm Oerlikon cannon
Complement:
  design                            48

* The armament of submarines of this class varied considerably.  For example: 23 boats were fitted with the six bow tubes only: 18 vessels, intended to operate in the Far East, had their 3-inch guns replaced by 4-inch guns: whilst, in some boats, the Oerlikon cannon replaced , rather than supplemented, the three machine guns.

© BAE SYSTEMS 2001