HMS Onyx (J221)

	HMS Onyx
History
United Kingdom
Name	Onyx
Namesake	Onyx
Ordered	15 November 1940
Builder	Harland & Wolff, Belfast
Laid down	24 November 1941
Launched	27 October 1942
Commissioned	26 March 1943
Identification	Pennant number: J221
Fate	Scrapped, 1967
General characteristics
Class & type	Algerine-class minesweeper
Displacement	850 long tons (864 t) (standard); 1,125 long tons (1,143 t) (deep);
Length	225 ft (69 m) o/a
Beam	35 ft 6 in (10.82 m)
Draught	11 ft 6 in (3.51 m)
Installed power	2 × Admiralty 3-drum boilers; 2,000 ihp (1,500 kW);
Propulsion	2 shafts; 2 × Parsons geared steam turbines;
Speed	16.5 knots (30.6 km/h; 19.0 mph)
Range	5,000 nmi (9,300 km; 5,800 mi) at 10 knots (19 km/h; 12 mph)
Complement	85
Armament	1 × QF 4 in (102 mm) Mk V anti-aircraft gun; 4 × twin Oerlikon 20 mm cannon;

HMS Onyx (J221) was a steam turbine-powered Algerine-class minesweeper during the Second World War.

History
HMS Onyx
United Kingdom
Name	Onyx
Namesake	Onyx
Ordered	15 November 1940
Builder	Harland & Wolff, Belfast
Laid down	24 November 1941
Launched	27 October 1942
Commissioned	26 March 1943
Identification	Pennant number: J221
Fate	Scrapped, 1967
General characteristics
Class & type	Algerine-class minesweeper
Displacement	850 long tons (864 t) (standard) 1,125 long tons (1,143 t) (deep)
Length	225 ft (69 m) o/a
Beam	35 ft 6 in (10.82 m)
Draught	11 ft 6 in (3.51 m)
Installed power	2 × Admiralty 3-drum boilers 2,000 ihp (1,500 kW)
Propulsion	2 shafts 2 × Parsons geared steam turbines
Speed	16.5 knots (30.6 km/h; 19.0 mph)
Range	5,000 nmi (9,300 km; 5,800 mi) at 10 knots (19 km/h; 12 mph)
Complement	85
Armament	1 × QF 4 in (102 mm) Mk V anti-aircraft gun 4 × twin Oerlikon 20 mm cannon