HMS Sidon (P259)
 HMS Sidon |
|
| Career |  |
|---|---|
| Class and type: | S-class submarine |
| Name: | HMS Sidon |
| Builder: | Cammell Laird Shipyard - Birkenhead |
| Laid down: | 7 July 1943 |
| Launched: | 4 September 1944 |
| Commissioned: | 23 November 1944 |
| Fate: | wrecked by own torpedo explosion 16 June 1955 refloated, sunk for target 14 June 1957 |
| General characteristics | |
| Displacement: | 814-872 tons surfaced 990 tons submerged |
| Length: | 217 ft (66 m) |
| Beam: | 23 ft 6 in (7.16 m) |
| Draught: | 11 ft (3.4 m) |
| Speed: | 14.75 knots (27 km/h) surfaced 8 knots (15 km/h) submerged |
| Complement: | 48 officers and men |
| Armament: | 6 x forward 21-inch (533 mm) torpedo tubes, one aft 13 torpedoes one three-inch (76 mm) gun (four-inch on later boats) one 20 mm cannon three .303-calibre machine gun |
| Notes: |  Badge of HMS Sidon |
HMS Sidon was a submarine of the Royal Navy, launched in September 1944, one of the third group of S-class submarines built by Cammell Laird & Co Limited, Birkenhead. An explosion caused by a faulty torpedo sank her in Portland Harbour with the loss of 13 lives.
Contents |
[edit] Accident
On the morning of 16 June 1955, Sidon was moored alongside the depot ship HMS Maidstone in Portland Harbour. Two 21-inch Mark 12 High test peroxide-powered torpedoes, code-named "Fancy", had been loaded aboard for testing. Fifty-six officers and crewmen were aboard.
At 0825, an explosion in one of the Fancy torpedoes (but not the warhead) burst the number-three torpedo tube it was loaded into and ruptured the forward-most two watertight bulkheads. Fire, toxic gases, and smoke accompanied the blast. Twelve men in the forward compartments died instantly and seven others were seriously injured.
The submarine started to settle by the bows with a list to starboard, and her commanding officer, Lieutenant Commander Verry, ordered the submarine evacuated from the engine room and aft escape hatches. Thanks to a rescue party from Maidstone, everyone not immediately killed escaped, except Maidstone's medical officer, Temporary Surgeon Lieutenant Charles Eric Rhodes. He had gone aboard with the rescue party, assisted several survivors, and suffocated because he was using a DSEA set that he hadn't been trained to use. At about 0850 Sidon sank to the bottom of the harbour. On 1 November 1955 Rhodes was posthumously awarded the Albert Medal for putting his life in danger to save others.[1]
One week later the wreck was raised and towed into a causeway on Chesil Beach. The bodies of the 13 casualties were removed and buried with full honours in the Portland Royal Naval Cemetery on top of the cliffs overlooking the harbour.
A Court of Inquiry cleared anyone aboard Sidon for the loss of the boat. The direct cause of the accident was determined to have been malfunctioning of the "Fancy" torpedo. A torpedo being readied for the morning test shot had begun a "hot-run" - its engine had started while it was still inside the submarine and was over-speeding, creating very high pressures in its fuel system. The "Fancy" torpedo used high test peroxide (HTP) as an oxidizer. When an oxidizer line burst, HTP sprayed onto the copper fittings inside the torpedo, decomposing into oxygen and steam. The torpedo's warhead did not detonate, but its hull burst violently, rupturing the torpedo tube and causing the flooding that destroyed the boat. The torpedo programme was terminated and the torpedoes taken out of use by 1959.[2]
Sidon was refloated, then sunk to act as an ASDIC target on 14 June 1957.[3]
On the 50th Anniversary of the Sidon accident, 16 June 2005, the Dorset Branch of the Submariners Association erected a Memorial Stone to those who died. This is situated adjacent to the War Memorial at Portland, opposite the Portland Heights Motel. A number of survivors and relatives of those who died in the accident attended the ceremony
On 18 January 2003, Deepquest Sub Sea announced that they intend to raise HMS Sidon.[4]
[edit] See also
- Submarines destroyed by hot-running torpedoes:
-
- Possibly USS Scorpion (SSN-589).
[edit] References
- ^ London Gazette: no. 40621. p. 6159. 1 November 1955. Retrieved 14 May 2009.
- ^ http://www.navweaps.com/Weapons/WTBR_PostWWII.htm
- ^ Marshall, Geoff (July 2008 - Volume 28 Number 4), "The Loss of the HMS Sidon", In Depth (Submarines Association Australia), http://submarinesaustralia.com/indepth_archive/in_depth__jul_08.html, retrieved 2 Sep 2010
- ^ HMS Sidon, Uboat.net
- Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham. ISBN 978-1-86176-281-8. OCLC 67375475.
[edit] Bibliography
- Innes McCartney (2002). Lost Patrols: Submarine Wrecks of the English Channel.
[edit] External links
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- British submarine accidents
- Submarines destroyed by hotrunning torpedoes
- British S class submarines (1931)
- Mersey-built ships
- Shipwrecks in the English Channel
- Maritime incidents in 1955
- Wreck diving sites in the United Kingdom
- High-test peroxide
- Explosions in England
- 1944 ships
- World War II submarines of the United Kingdom
- Ships sunk as targets
