HMS Onyx (S21)

	HMS Onyx
History
United Kingdom
Name	HMS Onyx
Namesake	Onyx
Builder	Cammell Laird, Birkenhead
Laid down	16 November 1964
Launched	18 August 1966
Commissioned	20 November 1967
Decommissioned	1991
Fate	Scrapped May 2014
General characteristics as designed
Class and type	Oberon-class submarine
Displacement	1,610 tons standard; 2,030 tons full load surfaced; 2,410 tons full load submerged;
Length	241 feet (73 m) between perpendiculars; 295.2 feet (90.0 m) length overall;
Beam	26.5 feet (8.1 m)
Draught	18 feet (5.5 m)
Propulsion	2 × Admiralty Standard Range 16 VMS diesel generators; 2 × 3,000 shaft horsepower (2,200 kW) electric motors; 2 shafts;
Speed	17 knots (31 km/h; 20 mph) submerged; 12 knots (22 km/h; 14 mph) surfaced;
Complement	68
Sensors and ; processing systems	Type 186 and Type 187 sonars; I-band surface search radar;
Armament	8 × 21-inch (530 mm) torpedo tubes (6 forward, 2 aft); 24 torpedoes;

History
HMS Onyx
United Kingdom
Name	HMS Onyx
Namesake	Onyx
Builder	Cammell Laird, Birkenhead
Laid down	16 November 1964
Launched	18 August 1966
Commissioned	20 November 1967
Decommissioned	1991
Fate	Scrapped May 2014
General characteristics as designed
Class and type	Oberon-class submarine
Displacement	1,610 tons standard 2,030 tons full load surfaced 2,410 tons full load submerged
Length	241 feet (73 m) between perpendiculars 295.2 feet (90.0 m) length overall
Beam	26.5 feet (8.1 m)
Draught	18 feet (5.5 m)
Propulsion	2 × Admiralty Standard Range 16 VMS diesel generators 2 × 3,000 shaft horsepower (2,200 kW) electric motors 2 shafts
Speed	17 knots (31 km/h; 20 mph) submerged 12 knots (22 km/h; 14 mph) surfaced
Complement	68
Sensors and processing systems	Type 186 and Type 187 sonars I-band surface search radar
Armament	8 × 21-inch (530 mm) torpedo tubes (6 forward, 2 aft) 24 torpedoes