Black Swan class sloop

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HMS Cygnet
HMS Cygnet
General Characteristics Royal Navy Ensign
Displacement: 1,250 tons (original) 1,350 tons (modified)
Length: 283 ft (86.3 m)
Beam: 38 ft (12 m)
Draught: 11 ft (3.4 m)
Propulsion: Geared turbines, 2 shafts:

3600 hp (2.68 MW) (original)
4300 hp (3.21 MW) (modified)

Speed: 19 knots (35 km/h) (original)

20 knots (37 km/h) (modified)

Range: 7,500 miles at 12 knots (13,900 km at 22 km/h)
Complement: 180 (original); 192 (modified)
Armament: Six 4 inch (100 mm) AA guns (3x2)

Four 2 pdr AA pom-pom; four 0.5 inch (13 mm) AA (original)
Twelve 20 mm Oerlikon AA (6x2) (modified)

The Black Swan class and Modified Black Swan class were two classes of sloop of the Royal Navy and Royal Indian Navy. Eight Black Swans were launched between 1939 and 1943; twenty-nine modified Black Swans were launched between 1942 and 1945.

Like corvettes, sloops were specialized convoy-defence vessels, with anti-aircraft and anti-submarine capability. They were designed to have a longer range than a destroyer at the expense of a lower top speed, while remaining capable of outrunning surfaced Type VII and Type IX U-boats.

In World War II, Black Swan-class sloops sank 29 U-boats. The most famous sloop commander was Captain Frederic John Walker. His sloop Starling became one of the most successful submarine hunters, taking part in the sinking of eleven U-boats.

After the war, sloops continued in service with the Royal Navy, Egyptian Navy, Indian Navy, Pakistani Navy and the West German Navy. In April 1949, Amethyst was attacked on the Yangtze River by the Communist People's Liberation Army.

Several Black Swan sloops fought in the Korean War.

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Royal Indian Navy

Royal Navy

Royal Indian Navy

Royal Navy

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