HMS Otter (S15)
HMS Otter in harbour
|Builder:||Scotts Shipbuilding, Greenock|
|Laid down:||14 January 1960|
|Launched:||15 May 1961|
|Commissioned:||20 August 1962|
|Decommissioned:||31 July 1991|
|Identification:||pennant number: S15|
|Fate:||Scrapped at Pounds yard of Portsmouth by European Metal Recycling in April 1992. Parts from the Otter were sold to Chile for use on their O boats.|
|General characteristics as designed|
|Class and type:||Oberon class|
|Beam:||26.5 feet (8.1 m)|
|Draught:||18 feet (5.5 m)|
|Complement:||68 (6 officers, 62 enlisted)|
Design and construction
The Oberon class was a direct follow on of the Porpoise-class, with the same dimensions and external design, but updates to equipment and internal fittings, and a higher grade of steel used for fabrication of the pressure hull.
As designed for British service, the Oberon-class submarines were 241 feet (73 m) in length between perpendiculars and 295.2 feet (90.0 m) in length overall, with a beam of 26.5 feet (8.1 m), and a draught of 18 feet (5.5 m). Displacement was 1,610 tons standard, 2,030 tons full load when surfaced, and 2,410 tons full load when submerged. Propulsion machinery consisted of 2 Admiralty Standard Range 16 VMS diesel generators, and two 3,000 shaft horsepower (2,200 kW) electric motors, each driving a 7 feet (2.1 m) 3-bladed propeller at up to 400 rpm. Top speed was 17 knots (31 km/h; 20 mph) when submerged, and 12 knots (22 km/h; 14 mph) on the surface. Eight 21-inch (530 mm) diameter torpedo tubes were fitted (six facing forward, two aft), with a total payload of 24 torpedoes. The boats were fitted with Type 186 and Type 187 sonars, and an I-band surface search radar. The standard complement was 68: 6 officers, 62 sailors.
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Decommissioning and fate
Otter was paid off on 31 July 1991.
- Chant, Christopher (2005). Submarine Warfare Today: The World's Deadliest Underwater Weapons Systems. Wigston: Silverdale Books. p. [page needed]. ISBN 1-84509-158-2. OCLC 156749009.
- Moore, John, ed. (1977). Jane's Fighting Ships 1977-78. Jane's Fighting Ships (80th ed.). London: Jane's Yearbooks. p. 490. ISBN 0531032779. OCLC 18207174.
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