Black Swan-class sloop

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HMS Black Swan in April 1945
Class overview
Name	Black Swan class
Operators	Royal Navy  Royal Indian Navy  German Navy  Indian Navy
Preceded by	Egret class
Built	1938–1946
In commission	1939–1981
Planned	42
Completed	12 (original) + 25 (modified)
Cancelled	5
Lost	6
Retired	30
General characteristics
Type	Sloop-of-war
Displacement	1,250 tons original 1,350 tons modified
Length	299 ft 6 in (91.29 m)
Beam	37 ft 6 in (11.43 m) original 38 ft 6 in (11.73 m) modified
Draught	11 ft (3.4 m)
Propulsion	Geared turbines, 2 shafts: 3,600 hp (2.68 MW) (original) 4,300 hp (3.21 MW) (modified)
Speed	19 knots (35 km/h) (original) 20 knots (37 km/h) (modified)
Range	7,500 nmi (13,900 km) at 12 kn (22 km/h)
Complement	180 (original) 192 (modified)
Armament	6 × QF 4 in (102 mm) Mk XVI AA guns (3 × 2) 4 × 2-pounder AA pom-pom 4 × 0.5-inch (12.7 mm) AA machine guns (original) 12 × 20 mm Oerlikon AA (6 × 2) (modified) Depth charges 40 (110 modified)

The Black Swan class and Modified Black Swan class were two classes of sloop of the Royal Navy and Royal Indian Navy. Twelve Black Swans were launched between 1939 and 1943, including four for the Royal Indian Navy; twenty-five Modified Black Swans were launched between 1942 and 1945, including two for the Royal Indian Navy; several other ships were cancelled.