During the 18th and 19th centuries, a sloop-of-war was a warship of the British Royal Navy with a single gun deck that carried up to 18 guns. The rating system of the Royal Navy covered all vessels with 20 or more guns; thus, the term encompassed all unrated warships, including gun-brigs and cutters. In technical terms, even the more specialised bomb vessels and fire ships were classed by the Royal Navy as sloops-of-war, and in practice these were employed in the role of a sloop-of-war when not carrying out their specialised functions.
The Flower-class corvette was a British class of 294 corvettes used during World War II by the Allied navies particularly as anti-submarine convoy escorts in the Battle of the Atlantic. Royal Navy ships of this class were named after flowers.
HMS Grenville was the second ship of this name to serve with the Royal Navy in the Second World War. Grenville and seven other U-class destroyers were ordered as part of the Emergency Programme. She was launched at Swan Hunter and Wigham Richardson Ltd., Wallsend-on-Tyne on 12 October 1942 and commissioned on 27 May 1943.
HMS Woodpecker, pennant number U08, was a Black Swan-class sloop of the Royal Navy. She was active during the Second World War and was a successful anti-submarine warfare vessel, being credited with the destruction of six U-boats.
Six ships and a shore establishment of the Royal Navy have borne the name HMS Actaeon or HMS Acteon, after Actaeon, a figure in Greek mythology:
HMS Magpie, pennant number U82, was a Royal Navy Modified Black Swan-class sloop launched in 1943 and broken up in 1959. She was the seventh Royal Navy ship to bear the name. She was reclassified as a frigate in 1947, receiving a new pennant number F82. The ship was the only vessel commanded by Prince Philip, Duke of Edinburgh, who took command on 2 September 1950, when he was 29.
The Bittern-class sloop was a three-ship class of long-range escort vessels used in the Second World War by the Royal Navy.
The Egret-class sloops were a three ship class of a long-range escort vessels used in the Second World War by the Royal Navy. They were an enlarged version of the Bittern class with an extra twin 4-inch gun mounting. They were fitted with Denny Brown stabilisers and the Fuze Keeping Clock anti-aircraft fire control system.
HMS Mermaid was a Modified Black Swan-class sloop of the Royal Navy. Mermaid saw service as a convoy escort during the Second World War, taking part in the sinking of two German submarines while escorting Arctic convoys to and from the Soviet Union.
HMS Wren (U28) was a Black Swan-class sloop of the Royal Navy. She was active during the Second World War and was a successful anti-submarine warfare vessel, being credited with the destruction of five U-boats.
HMS Flamingo was a Black Swan-class sloop of the Royal Navy. She saw service as a convoy escort during the Second World War, seeing extensive service in the Mediterranean and Far East in 1945.
HMS Alacrity was a modified Black Swan-class sloop of the Royal Navy. She was built for service as a convoy escort during the Second World War, but was completed too late to see action. She did subsequently take part in the Korean War between 1950 and 1952. She was scrapped in 1956.
HMS Lapwing (U62) was a modified Black Swan-class sloop of the Royal Navy.
HMS Itchen (K227) was a River-class frigate of the Royal Navy (RN). Itchen was built to the RN's specifications as a Group I River-class frigate. She served in the North Atlantic during World War II.
HMS Cuckmere (K299) was a River-class frigate of the Royal Navy (RN) in 1943. Cuckmere was originally to be built for the United States Navy, having been laid down as PG-104, but was transferred to the Royal Navy as part of Lend-Lease and finished to the RN's specifications as a Group II River-class frigate. She was first Royal Navy ship to carry the name Cuckmere.
HMS Lagan (K259) was a River-class frigate of the Royal Navy (RN). Lagan was built to the RN's specifications as a Group II River-class frigate. She served in the North Atlantic during World War II.
HMS Opossum was a modified Black Swan-class sloop of the Royal Navy. She was laid down by William Denny and Brothers, Dumbarton on 28 July 1943, launched on 30 November 1944 and commissioned on 16 June 1945, with the pennant number U33.
HMS Modeste was a modified Black Swan-class sloop of the British Royal Navy. She was built by Chatham Dockyard, during the Second World War, being launched on 29 January 1944 and commissioned on 3 September 1945. Post war, Modeste served with the British Far East Fleet, and took part in the Suez Crisis. She was paid off into reserve for the last time in 1958 and scrapped in 1961.
HMS Crane was a modified Black Swan-class sloop of the Royal Navy. She was laid down by William Denny and Brothers, Dumbarton on 13 June 1941, launched on 9 November 1942 and commissioned on 10 May 1943, with the pennant number U23. She saw active service during the Second World War, initially performing convoy escort roles in the Atlantic before supporting the Normandy landings. In the final months of the war, Crane joined the British Pacific Fleet and saw service during the Battle of Okinawa. Post-war, Crane remained in south-east Asia and took part in hostilities during the Korean War. She was redeployed to the Middle East during the Suez Crisis before returning to Asia for service during the Malayan Emergency. Crane was withdrawn from service in the early 1960's and was scrapped in 1965.
HMS Snipe was a modified Black Swan-class sloop of the Royal Navy. She was laid down by William Denny and Brothers, Dumbarton on 21 September 1944, launched on 20 December 1945 and commissioned on 9 September 1946, with the pennant number U20.
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