HMS Otus (S18)
HMS Otus
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| History | |
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 United Kingdom
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| Name: | HMS Otus |
| Builder: | Scotts Yard in Greenock, Scotland |
| Yard number: | 688 |
| Laid down: | 31 May 1961 |
| Launched: | 17 October 1962 |
| Commissioned: | 5 October 1963 |
| Decommissioned: | 1990s |
| Identification: | Pennant number: S18 |
| Status: | Museum ship in Sassnitz, Germany |
| General characteristics as designed | |
| Class and type: | Oberon class |
| Displacement: |
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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 Otus was a Royal Navy Oberon-class submarine launched in 1962. She was decommissioned in the early 1990s and is now a naval museum in Germany.
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.
Otus was laid down by Scotts Shipbuilding and Engineering Company on 31 May 1961, and launched on 17 October 1962.Sea trials were undertaken in Scottish waters, mainly Loch Long and Loch Fyne. The boat was commissioned into the Royal Navy on 5 October 1963.
The first commission of Otus included large-scale missile trial exercises in the Atlantic Ocean and visits to the United States and Halifax, Canada.
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