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ROYAL NAVY - UNITED KINGDOM

SUBMARINES

"S" 1942 and 1943 Programmes" submarines (STURDY) (1943 - 1945)

Saga 1945

Name No Yard No Builder Laid down Launched Comp Fate
Sea Scout P253, 1948- S153   Cammell Laird, Birkenhead 4/1943 24/3/1944 7/1944 BU 12/1965
Selene P254, 1948- S154   Cammell Laird, Birkenhead 4/1943 24/4/1944 7/1944 BU 6/1961
Seneschal P255, 1948- S75   Scotts, Greenock 9/1943 23/4/1945 9/1945 BU 8/1960
Sentinel P256, 1948- S56   Scotts, Greenock 11/1943 27/7/1945 12/1945 BU 2/1962
Sidon P259, 1948- S59   Cammell Laird, Birkenhead 7/1943 4/9/1944 11/1944 blew up 16/6/1955, target 1957
Sleuth P261, 1948- S61   Cammell Laird, Birkenhead 6/1943 6/7/1944 10/1944 BU 9/1958
Solent P262, 1948- S62   Cammell Laird, Birkenhead 5/1943 8/6/1944 9/1944 BU 8/1961
Spearhead P263   Cammell Laird, Birkenhead 8/1943 2/10/1944 12/1944 to Portugal 8/1948 (Neptuno)
Springer P264, 1948- S64   Cammell Laird, Birkenhead 5/1944 14/5/1945 8/1945 to Israel 10/1958 (תנין [Tanin])
Sturdy P248, 1948- S48   Cammell Laird, Birkenhead 12/1942 30/9/1943 12/1943 BU 5/1958
Stygian P249, 1948- S...   Cammell Laird, Birkenhead 1/1943 30/11/1943 2/1944 BU 10/1949
Subtle P251, 1948- S51   Cammell Laird, Birkenhead 2/1943 27/1/1944 4/1944 BU 7/1959
Supreme P252, 1948- S...   Cammell Laird, Birkenhead 2/1943 24/2/1944 5/1944 BU 7/1950
Saga P257   Cammell Laird, Birkenhead 4/1944 14/3/1945 6/1945 to Portugal 10/1948 (Nautilo)
Sanguine P266, 1948- S66   Cammell Laird, Birkenhead 1/1944 15/2/1945 5/1945 to Israel 1958 (רהב [Rahav])
Scorcher P258, 1948- S58   Cammell Laird, Birkenhead 12/1943 18/12/1944 3/1945 BU 9/1962
Spur P265   Cammell Laird, Birkenhead 10/1943 17/11/1944 2/1945 to Portugal 11/1948 (Narval)

 

Displacement standard, t

715

Displacement normal, t

814 / 990

Sturdy, Stygian: 842 / 990

Length, m

66.1

Breadth, m

7.24

Draught, m

4.24 - 4.29

Sturdy, Stygian: 4.47

No of shafts

2

Machinery

2 Admiralty diesels / 2 electric motors

Power, h. p.

1900 / 1300

Max speed, kts

14.75 / 9

Fuel, t

diesel oil 45, up to 85 max

Sturdy, Stygian: 67, up to 92 max

Endurance, nm(kts)

4000(10) /

Sturdy, Stygian: 6000(10) /

Armament

1 x 1 - 102/40 QF Mk XII, 1 x 1 - 20/70 Oerlikon Mk II/IV, 6 - 533 TT (bow, 12 torpedoes or 12 2 mines)

Seneschal, Sentinel, Spearhead, Sanguine: 1 x 1 - 102/40 QF Mk XXII, 1 x 1 - 20/70 Oerlikon Mk II/IV, 6 - 533 TT (bow, 12 torpedoes or 12 2 mines)

Stygian, Subtle: 1 x 1 - 76/45 20cwt QF Mk II, 1 x 1 - 20/70 Oerlikon Mk II/IV, 7 - 533 TT (6 bow, 1 ext stern, 13 torpedoes or 12 2 mines)

Sturdy: 1 x 1 - 102/40 QF Mk XII, 1 x 1 - 20/70 Oerlikon Mk II/IV, 7 - 533 TT (6 bow, 1 ext stern, 13 torpedoes or 12 2 mines)

Electronic equipment

type 267W radar, type 129, type 138 sonars

Stygian, Subtle, Sturdy: type 291W radar, type 129, type 138 sonars

Complement

48

Diving depth operational, m

110

Stygian, Sturdy: 95

Ship project history: Development of Shark class. 5 submarines were built under "Emergency war Programme", 13 under 1940 Programme, 15 under 1941, 12 under 1942 and 5 boats under 1943 Programme. In comparison with pre-war boats of "S" class, bulkheads were welded and fuel stowage at the expense of storage of part of fuel in specially arranged  ballast tanks was increased. All boats of 1942 and 1943 Programmes had all-welded pressure hull, that has raised an operational diving depth to 110m. Majority of submarines had additional seventh TT out of a pressure hull. During or already after completion all ships have even more increased fuel stowage at the expense of improvement of ballast tanks construction: on 40 or 25t.

Modernizations:

1/1946: Sea Scout, Selene, Sidon, Sleuth, Solent, Springer, Supreme, Saga, Scorcher, Spur: 1 x 1 - 102/40 S Mk I, 1 x 1 - 20/70 Mk IIA S/M, 6 - 533 TT, type 267W radar, type 129, type 138 sonars

1/1946, Seneschal, Sentinel, Spearhead, Sanguine: 1 x 1 - 102/40 S Mk I, 1 x 1 - 20/70 Mk IIA S/M, 6 - 533 TT, type 267W radar, type 129, type 138 sonars

1/1946, Stygian, Subtle: 1 x 1 - 76/45 CP Mk V, 1 x 1 - 20/70 Mk IIA S/M, 7 - 533 TT, type 291W radar, type 129, type 138 sonars

1/1946, Sturdy: 1 x 1 - 102/40 S Mk I, 1 x 1 - 20/70 Mk IIA S/M, 7 - 533 TT, type 291W radar, type 129, type 138 sonars

early 1950s, most survived: - 1 x 1 - 76/45 or 102/40

Naval service: Selene, Solent and Sleuth were converted to high speed underwater target after war. Hull and casing were streamlined, new higher capacity batteries, up-rated motors and "T" class propellers were installed. Maximal speed increased up to 12.5kts at periscope depth and 16.7kts surfaced. Sidon exploded caused by concentrated hydrogen peroxide used in experimental Mk 12 torpedo, later she was salvaged and used as target.

Ivan Gogin, 2008-15