HMS Orpheus (S11)
HMS Orpheus
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| History | |
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 United Kingdom
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| Name: | HMS Orpheus |
| Builder: | Vickers, Barrow-in-Furness |
| Laid down: | 16 April 1959 |
| Launched: | 17 November 1959 |
| Commissioned: | 25 November 1960 |
| Identification: | pennant number: S11 |
| General characteristics as designed | |
| Class and type: | Oberon-class submarine |
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| Length: |
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| Beam: | 26.5 feet (8.1 m) |
| Draught: | 18 feet (5.5 m) |
| Propulsion: |
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| Speed: |
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| Complement: | 68 (6 officers, 62 enlisted) |
| Sensors and processing systems: |
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| Armament: |
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HMS Orpheus was an Oberon-class submarine of the Royal Navy.
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. Unlike other members of the class, which had a fin made from glass fibre-reinforced plastic, the fin of Orpheus was made of aluminium alloy.
Orpheus was laid down by Vickers-Armstrongs on 16 April 1959, and launched on 17 November 1959. The boat was commissioned into the Royal Navy on 25 November 1960.
Orpheus attended the 1977 Silver Jubilee Fleet Review off Spithead when she was part of the Submarine Flotilla.
She was in harbour service in 1987 and was broken up in 1994.
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