Kingfisher class sloop

From SpottingWorld, the Hub for the SpottingWorld network...
HMS Shearwater
HMS Shearwater
Class overview
Operators: Royal Navy
In commission:1935–1950
General characteristics
Type: Sloop-of-war
Displacement: Kingfisher group;
510 long tons (518 t) standard
680 long tons (691 t) full load
Kittiwake group;
530 long tons (539 t) standard
700 long tons (711 t) full load
Shearwater group;
580 long tons (589 t) standard
750 long tons (762 t) full load
Length: 234 ft (71 m) p/p
243 ft 3 in (74.14 m) o/a
Beam: 26 ft 6 in (8.08 m)
Draught: Kingfisher group; 6 ft (1.8 m)
Kittiwake group; 6 ft 3 in (1.91 m)
Shearwater group; 6 ft 6 in (1.98 m)
Propulsion: 2 × Admiralty 3-drum water-tube boilers
Parsons geared steam turbines
3,600 shp (2,685 kW)
2 shafts
160 tons oil
Speed: 20 knots (37 km/h; 23 mph)
Complement: 60

As designed
Kingfisher group;
• 1 × QF 4-inch (101.6 mm) Mark V L/45 gun, mount P Mk.I
Depth charges
Kittiwake group;
• 1 × QF 4 in Mark V L/45 gun, mount HA Mk.III
• Depth charges
Shearwater group;
• 1 × QF 4 in Mark V L/45 gun, mount HA Mk.III
• 4 × 0.5-inch (12.7-mm) Mark III Vickers machine guns, quad mount HA Mk.III

• Depth charges

The Kingfisher class was a class of nine patrol sloops of the British Royal Navy built in three groups of three each during the 1930s, that saw service during World War II.


The Kingfisher class was an attempt to build a small patrol vessel under 600 tons, such vessels being outwith the clauses of the London Naval Treaty of 1930. It was intended that it would escort coastal shipping in wartime.

The design had a number of shortcomings, however. Firstly, it was simply designed to too high a standard; constructed to full naval warship specifications and powered by geared steam turbine engines, it was not suitable for mass production. Secondly, it was simply too small, short on range, and the hull-form, based on a scaled-down destroyer, was not suitable for open ocean work, where escorts were found to be dearly lacking in numbers during wartime. Thirdly, armed originally with only a single 4-inch gun forwards and depth charges aft, they were limited in their ability to defend themselves, never mind their charges.


The woeful lack of defensive armament was addressed early in the war by adding a multiple Vickers machine gun on the quarterdeck in the Kingfisher and Kittiwake groups, as per the Shearwaters. As they became available, two single 20 mm Oerlikon guns were added, on single pedestal mounts on the deckhouse aft, with the useless machine gun being replaced later with a further pair of such weapons. Centimetric Radar Type 271 was added on the roof of the bridge as it became available, this was a target indication set capable of picking up the conning tower or even the periscope or schnorkel of a submarine. Radar Type 286 air warning was added at the masthead. The ships that had the Mark V gun on the open mounting HA Mark III had a shield added to give the gun crews a measure of protection on the exposed fo'c'sle.


Kingfisher group

Kittiwake group

Shearwater group

See also


  • British and Empire Warships of the Second World War, H Trevor Lenton, Greenhill Books, ISBN 1-85367-277-7
  • British Destroyers and Frigates; the Second World War and After, Norman Friedman, Chatham Publishing, ISBN 1-86176-137-6.
  • Conway's All the World's Fighting Ships, 1922-1946, Ed. Robert Gardiner, Naval Institute Press, ISBN 0-87021-913-8