24-class sloop

Class overview
HMS Sir Bevis
Operators:	Royal Navy Royal Australian Navy Imperial Japanese Navy
Preceded by:	Flower-class sloop
Built:	1917 – 1918
In commission:	1918 - 1946
Planned:	24
Completed:	22
Cancelled:	2
Lost:	1
General characteristics
Displacement:	1,320 long tons (1,341 t) standard
Length:	258 ft (79 m) p/p 267 ft 6 in (81.53 m) o/a
Beam:	35 ft (11 m)
Draught:	10 ft 6 in (3.20 m)
Propulsion:	4-cylinder triple expansion engine, 2,500 ihp (1,900 kW) 2 cylindrical boilers 1 screw
Speed:	17 knots (20 mph; 31 km/h)
Range:	260 tons of coal
Complement:	82
Armament:	As designed: 2 × 4 in (100 mm) guns 39 depth charges

The 24 class was a class of minesweeping sloops. Derived from the preceding Flower-class sloop, but designed to appear double-ended. Twenty-four ships to this design (hence the class name) were ordered between December 1916 and April 1917 under the Emergency War Programme for the Royal Navy in World War I, although two of them were cancelled before launch. All were named after famous racehorses (winners of the Epsom Derby), but they were not named Racehorse class as the Admiralty realised that this could easily be confused in communications with the Racecourse-class minesweeper of paddle minesweepers, and they officially became the 24 class.

Like the Flower-class sloops, they were single-screw fleet sweeping sloops used almost entirely for minesweeping, although only ten were completed by the Armistice in 1918. However, they had identical deckhouses and gun shields at either end of the vessel, with straight stems and sterns. Furthermore, four of those completed had the single mast aft of the centrally-located funnel, and the rest had the mast forward of the funnel. The symmetrical design was completed with fake anchors at the stern to confuse enemy targeting.

Ships

HMS Ard Patrick — built by Swan Hunter & Wigham Richardson, Wallsend on Tyne, launched 6 June 1918. Sold 12 August 1920.
HMS Bend Or — built by Barclay Curle & Company, Whiteinch, launched 24 September 1918. Sold 12 August 1920.
HMS Cicero — built by Swan Hunter, launched 26 July 1918. Sold for breaking up 1 December 1921.
HMS Donovan — built by Greenock & Grangemouth Dockyard Company, launched 27 April 1918. Sold 15 November 1922.
HMS Flying Fox — built by Swan Hunter, launched 28 March 1918. Transferred to RNVR on 24 March 1920. Sold for breaking up in 1973.
HMS Galtee More — ordered from Osbourne Graham, transferred to Swan Hunter 7 June 1918, then cancelled 3 December 1918.
HMS Harvester — built by Barclay Curle & Company, Whiteinch, launched 2 November 1918. Sold for breaking up in August 1922.
HMS Iroquois — built by Barclay Curle, launched 24 August 1918. Survey ship in 1922. Sold for breaking up 28 June 1937.
HMS Isinglass — built by Greenock & Grangemouth Dockyard, launched 5 March 1919. Sold 12 August 1920.
HMS Ladas — built by Osbourne Graham & Company, Sunderland, launched 21 September 1918. Sold 6 November 1920.
HMS Merry Hampton — built by Blyth Shipbuilding & Dry Dock Company, launched 19 December 1918. Survey ship in February 1923, renamed Herald. Scuttled in February 1942 at Selatar but salved by the Japanese Navy and added as IJN Heiyo in October 1942. Sunk by mine 14 November 1944.
HMS Minoru — built by Swan Hunter, launched 6 June 1919. Sold 25 February 1920, becoming mercantile Haim Mazza.
HMS Orby — built by Swan Hunter, launched 22 October 1918. Sold to break up 15 November 1922.
HMS Ormonde — built by Blyth Shipbuilding & Dry Dock Company, launched 8 June 1918. Survey vessel in March 1924. Sold 6 August 1937 to break up.
HMS Persimmon — built by Osbourne Graham, launched 4 March 1919. Sold 12 August 1920 but sale was cancelled; re-sold 13 October 1922.
HMS Rocksand — built by Swan Hunter, launched 10 July 1918. Sold 15 November 1922.
HMS Sanfoin — built by Greenock & Grangemouth Dockyard Company, Greenock, launched 10 June 1918. Sold 15 November 1922.
HMS Sefton — built by Barclay Curle, launched 6 July 1918. Sold August 1922.
HMS Silvio — built by Barclay Curle, launched 12 April 1918. Transferred to Royal Australian Navy in December 1924 and became survey ship HMAS Moresby in April 1925. Escort vessel 1940. Sold for breaking up 1946 at Newcastle, NSW.
HMS Sir Bevis — built by Barclay Curle, launched 11 May 1918. Transferred to RNVR in September 1923, renamed Irwell, then again renamed Eaglet in 1926.
HMS Sir Hugo — built by Greenock & Grangemouth, launched 20 September 1918. Depot ship in October 1919. Sold for breaking up 25 June 1930.
HMS Sir Visto — built by Osbourne Graham, launched 4 December 1918. Sold 12 August 1920, becoming mercantile Fanny Mazza.
HMS Spearmint — built by Swan Hunter, launched 23 September 1918. Sold for breaking up 29 November 1922.
HMS Sunstar — ordered from Swan Hunter, but cancelled 3 December 1918.

References

British and Empire Warships of the Second World War, H T Lenton, 1998, Greenhill Books, ISBN 978-1-85367-277-4
Jane's Fighting Ships of World War I, Janes Publishing, 1919
The Grand Fleet, Warship Design and Development 1906-1922, D. K. Brown, Chatham Publishing, 1999, ISBN 978-1-86176-099-9

24-class sloops

Royal Navy	Ard Patrick Bend Or Cicero Donovan Flying Fox Galtee More Harvester Iroquois Isinglass Ladas Merry Hampton Minoru Orby Ormonde Persimmon Rocksand Sanfoin Sefton Silvio Sir Bevis Sir Hugo Sir Visto Spearmint Sunstar

Royal Australian Navy	Moresby

Preceded by: P class Followed by: Bridgewater class List of sloop classes of the Royal Navy

British naval ship classes of the First World War

Aircraft/Seaplane carriers	Empress^S^V Riviera^S^V Engadine^S^V Ark Royal^S Ben-my-Chree^S^V Campania^S^V Raven II^S^V Anne^S^V Vindex^S^V Manxman^S^V Furious^M Pegasus^S^V Nairana^S^V Argus^S^V Vindictive^S^V

Dreadnought battleships	Dreadnought^S Bellerophon St Vincent Neptune^S Colossus Orion King George V Erin^S Agincourt^S Iron Duke Canada^S Queen Elizabeth Revenge

Pre-dreadnought battleships	Royal Sovereign Majestic Canopus Formidable Duncan King Edward VII Swiftsure Lord Nelson

Battlecruisers	Invincible Indefatigable Lion Queen Mary^S Tiger^S Renown Courageous Admiral^S^C Incomparable^X

Armoured cruisers	Cressy Drake Monmouth Devonshire Duke of Edinburgh Warrior Minotaur

Heavy cruisers	Hawkins

Light cruisers	Town^G Arethusa C^{G, C} Danae^C Emerald^A

Protected cruisers	Apollo Astraea Eclipse Blake Pearl Edgar Powerful Diadem Arrogant Pelorus Highflyer Challenger Topaze

Scout cruisers	Adventure Forward Pathfinder Sentinel Boadicea Blonde Active

Destroyer flotilla leaders	Swift^S Faulknor Marksman Parker Admiralty (or Scott)^C Thornycroft (or Shakespeare)^C

Destroyers	A^G B^G C^G D^G E^G F Cricket^G G H I K L Admiralty M Hawthorn M Thornycroft M Yarrow M Yarrow Later M R^G S^{G, C} Talisman V and W^{G, C}

Monitors	Marshal Ney Abercrombie Lord Clive Humber Gorgon M15 M29 Erebus

Minesweepers	Flower Racecourse Hunt 24^C

Gunboats	Fly Insect

Submarines	A B C D E F G H^C J K L^C M^C R^C Swordfish^S V

A All completed after the war C One or more completed after the war G Grouping of several classes M converted from Courageous class S Single ship of class V Conversions X Cancelled

British naval ship classes of the Second World War

Aircraft carriers	Courageous Argus Hermes Eagle Ark Royal Illustrious Unicorn Implacable Colossus Majestic^C Audacious^C Malta^X Centaur^C

Escort carriers	Archer^AV Audacity^V Avenger^AV Attacker^A Ruler^A Activity^V Pretoria Castle^V Nairana^V

Battleships	Queen Elizabeth Revenge Nelson King George V Lion^X Vanguard^C

Battlecruisers	Renown HMS Hood

Heavy cruisers	Hawkins County York

Light cruisers	C Danae Emerald Leander Arethusa Town Dido Crown Colony Minotaur

Minelayers	Adventure Abdiel Plover Linnet Agamemnon^V Menestheus^V Port Napier^V Port Quebec^V Southern Prince^V Teviot Bank^V

Destroyer leaders	Shakespeare Scott

Destroyers	R S V & W Town^A Ambuscade Amazon A & B C & D E & F G & H I Tribal J, K & N Hunt L & M O & P Q & R S & T U & V W & Z C Battle Weapon^C G^X Daring^C,P

Frigates	River Captain^A Colony^A Loch Bay

Corvettes	Flower Castle

Sloops	24 Bridgewater Hastings Banff^A Shoreham Grimsby Kingfisher Bittern Egret Black Swan

Minesweepers	Hunt Halcyon Bangor Auk^A Algerine Cybele

Submarines	H L Odin Parthian Rainbow S River Grampus T U P611 V Amphion X XE

Coastal	Harbour Defence Motor Launch Fairmile B motor launch Motor Torpedo Boat Motor Gun Boat Steam Gun Boat

Other	Trawlers Isles Portuguese Tree Monitors Erebus Roberts Seaplane carriers Pegasus Albatross Merchant aircraft carriers Fighter catapult ships Armed merchant cruisers Ocean boarding vessels

A American built X Cancelled C Completed after the war C,P Laid down and completed after the war V Conversions

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24-class sloop

Ships

See also

References