Black Swan class sloop


HMS Black Swan in April 1945
Class overview
Name: Black Swan class
Operators: Royal Navy
Royal Indian Navy
Built: 1938–1946
In commission: 1939–1967
Planned: 42
Completed: 13 (original) + 24 (modified)
Cancelled: 5
Lost: 6
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 pdr AA pom-pom
4 × 0.5-inch (12.7 mm) AA machine guns (original)

12 × 20 mm Oerlikon AA (6 × 2) (modified)

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

Contents

History

Like corvettes, sloops of that period were specialized convoy-defence vessels, except that sloops possessed much superior anti-aircraft fire control via the Fuze Keeping Clock and a heavy armament of high angle 4 inch guns while retaining excellent 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, Pakistan Navy and the West German Navy. In April 1949, Amethyst was attacked on the Yangtze River by the Communist People's Liberation Army.

Also, several Black Swan sloops fought in the Korean War.

Ship classes

Black Swan class
Royal Navy

The first two ships were built under the 1937 Programme and the second pair under the 1939 Programme. The remaining five RN ships were ordered under the 1940 War Programme; there were incremental improvements as the building developed, and the Woodcock and Wren when completed were practically indistinguishable from the Modified Black Swan class.

Royal Indian Navy
Modified Black Swan class
Royal Navy

Eleven ships were in the 1940 Supplementary War Programme:

Ten more ships were in the 1941 Programme:

Three more ships were in the 1942 Programme (Snipe and Sparrow had originally been in the 1940 Programme, ordered from John Brown, Clydebank on 21 June 1941, then the order was transferred to Devonport Dockyard 3 March 1942 and finally to Denny on 8 December 1942):

Three more ships were in the 1944 Programme, but all were cancelled 2 November 1945. These had been intended to be further modified and enlarged, with a beam of 38 feet 6 inches (11.73 m):

Royal Indian Navy

Losses

In World War II

U-boats kills

Reassessments

During the war the Starling was credited, along with the sloops Amethyst, Peacock, Hart, and frigate Loch Craggie, with sinking the U-482 in the North Channel on 16 January 1945. The British Admiralty withdrew this credit in a post-war reassessment.[1]

See also

References

Notes
  1. ^ Blair (2000), 630-631.
Bibliography
  • Blair, Clay (2000). Hitler's U-Boat War: The Hunted 1942–1945. New York: Modern Library. ISBN 0-679-64033-9. 
  • Hague, Arnold (1993). Sloops: A History of the 71 Sloops Built in Britain and Australia for the British, Australian and Indian Navies 1926–1946. Kendal, England: World Ship Society. ISBN 0-905617-67-3. 

External links