HMS Opportune (S20)
|Laid down:||26 October 1962|
|Launched:||14 February 1964|
|Commissioned:||29 December 1964|
|Decommissioned:||2 June 1993|
|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.
|This section needs expansion. You can help by adding to it. (June 2015)|
Decommissioning and fate
- 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.
- Official Souvenir Programme, 1977. Silver Jubilee Fleet Review, HMSO
- Colledge, J. J.; Warlow, Ben (2006) . Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8. OCLC 67375475.
|This article about a specific naval submarine of the United Kingdom is a stub. You can help Wikipedia by expanding it.|