The Acacia class was a class

Ship class

A ship class is a group of ships of a similar design. This is distinct from a ship-type, which might reflect a similarity of tonnage or intended use. For example, the is a nuclear aircraft carrier of the Nimitz class....

 of twenty-four sloops

Sloop-of-war

In the 18th and most of the 19th centuries, a sloop-of-war was a warship with a single gun deck that carried up to eighteen guns. As the rating system covered all vessels with 20 guns and above, this meant that the term sloop-of-war actually encompassed all the unrated combat vessels including the...

 that were ordered in January 1915 under the Emergency War Programme for the Royal Navy

Royal Navy

The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

 in World War I

World War I

World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

 as part of the larger "Flower Class

Flower class sloop

The Flower class comprised five sub-classes of sloops built under the Emergency War Programme for the Royal Navy during World War I, all of which were named after various flowers...

", which were also referred to as the "Cabbage Class", or "Herbaceous Borders". They were ordered in two batches, twelve ships on 1 January and another twelve on 12 January, and all were launched within about four or five months, and delivered between May and September 1915. They were used almost entirely for minesweeping until 1917, when they were transferred to escort duty.

They were single-screw Fleet Sweeping Vessels (Sloops) with triple hulls at the bows to give extra protection against loss when working.

Ships

— built by Swan Hunter & Wigham Richardson, Wallsend

Wallsend

Wallsend is an area in North Tyneside, Tyne and Wear, England. Wallsend derives its name as the location of the end of Hadrian's Wall. It has a population of 42,842.-Romans:...

 on Tyne, launched 15 April 1915. Sold 6 September 1922. — built by Swan Hunter, launched 13 May 1915. Sold for breaking up 6 September 1922. — built by Earle's Shipbuilding

Earle's Shipbuilding

Earle's Shipbuilding was an engineering company that was based in Hull, East Riding of Yorkshire, England from 1845 to 1932.-Earle Brothers:...

 & Engineering Co, Kingston upon Hull

Kingston upon Hull

Kingston upon Hull , usually referred to as Hull, is a city and unitary authority area in the ceremonial county of the East Riding of Yorkshire, England. It stands on the River Hull at its junction with the Humber estuary, 25 miles inland from the North Sea. Hull has a resident population of...

, launched 1 May 1915. Mined 4 July 1917 in the Mediterranean. — built by Scotts Shipbuilding & Engineering Company, Greenock

Greenock

Greenock is a town and administrative centre in the Inverclyde council area in United Kingdom, and a former burgh within the historic county of Renfrewshire, located in the west central Lowlands of Scotland...

, launched 24 July 1915. Sold for breaking up 26 May 1930. — built by Scotts, launched 17 August 1915. Sold for breaking up 22 February 1935. — built by Barclay Curle & Company, Whiteinch

Whiteinch

Whiteinch is a district in the Scottish city of Glasgow. It is situated north of the River Clyde between the Partick and Scotstoun areas of the city...

, launched 21 April 1915. Sold for breaking up 2 July 1932. — built by Barclay Curle, launched 19 May 1915. Sold for breaking up 15 January 1923. — built by Barclay Curle, launched 30 March 1915, to guardship 1942, base ship 1943, sold for breaking up 7 September 1946. — built Barclay Curle, launched 1 May 1915. Sold for breaking up 7 October 1930. — built by Lobnitz & Company

Lobnitz

Lobnitz Marine Holdings is a Scottish shipbuilding company located at Renfrew on the River Clyde, west of the Renfrew Ferry crossing and east of the confluence with the River Cart...

, Renfrew

Renfrew

-Local government:The town of Renfrew gave its name to a number of local government areas used at various times:*Renfrew a town to the west of Glasgow*Renfrewshire, the present unitary local council area in which Renfrew is situatated....

, launched 29 April 1915. Sold 6 September 1922. — built by Lobnitz, launched 2 June 1915. Sold 26 January 1920, becoming mercantile Principe d'Asturias. — built by Charles Connell & Company, Scotstoun

Scotstoun

Scotstoun is a historic district of Glasgow, Scotland, west of Glasgow City Centre. It is bounded by Yoker and Knightswood to the west, Victoria Park, Broomhill and Whiteinch to the east, Jordanhill to the north and the River Clyde to the south...

, launched 12 May 1915. Sold May 1920 in Portugal, becoming Portuguese warship NRP Carvalho Araújo, classified as a cruiser. — built by Connell, launched 10 June 1915. Hulked as RNVR drill ship in Singapore

Singapore

Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...

 1935, lost in February 1942 at the fall of Singapore

Battle of Singapore

The Battle of Singapore was fought in the South-East Asian theatre of the Second World War when the Empire of Japan invaded the Allied stronghold of Singapore. Singapore was the major British military base in Southeast Asia and nicknamed the "Gibraltar of the East"...

. — built by Napier & Miller, Old Kilpatrick

Old Kilpatrick

Old Kilpatrick is a village in West Dunbartonshire, Scotland.The village is on the north bank of the River Clyde immediately to the north of the Forth and Clyde Canal, three miles from Clydebank on the road to Dumbarton. The Great Western Road runs through Old Kilpatrick, and the next village to...

, launched 11 May 1915. Sold for breaking up in March 1922. — built by Archibald McMillan & Son, Dumbarton, launched 12 June 1915. Sunk by German submarine UC-75

SM UC-75

SM UC-75 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy during World War I. The U-boat was ordered on 12 January 1916 and was launched on 6 November 1916...

 in the English Channel, 4 May 1917. — built by Greenock & Grangemouth Dockyard Company, Greenock, launched 2 April 1915. Sold for breaking up 15 December 1922. — built by Barclay Curle, launched 16 June 1915. Depot ship October 1923, renamed Vulcan II; renamed Adamant II in 1930. Sold for breaking up 25 June 1930. — built by Scotts, launched 26 June 1915. Sold for breaking up 2 July 1932. — built by Barclay Curle, launched 13 July 1915. Transferred to Royal Australian Navy

Royal Australian Navy

The Royal Australian Navy is the naval branch of the Australian Defence Force. Following the Federation of Australia in 1901, the ships and resources of the separate colonial navies were integrated into a national force: the Commonwealth Naval Forces...

 in July 1919, dismantled July 1932, sunk as target off Sydney 1 August 1935. — built by Bow, MacLachlan & Co, launched 27 May 1915. Sold 26 January 1920, becoming mercantile Principe de Piamonte. — built by Bow, MacLachlan & Co, launched 16 July 1915. Sold for breaking up 18 November 1922. — built by William Simons & Company, Renfrew

Renfrew

-Local government:The town of Renfrew gave its name to a number of local government areas used at various times:*Renfrew a town to the west of Glasgow*Renfrewshire, the present unitary local council area in which Renfrew is situatated....

, launched 29 June 1915. Sold for breaking up 9 April 1923. — built by D. & W. Henderson & Company, Glasgow

Glasgow

Glasgow is the largest city in Scotland and third most populous in the United Kingdom. The city is situated on the River Clyde in the country's west central lowlands...

, launched 28 May 1915. Sold 27 January 1921 to Rangoon Port Commissioners, and renamed Lanbya. — built by Dunlop Bremner & Company

Dunlop Bremner & Company

Dunlop, Bremner & Company was a shipyard at Port Glasgow on the River Clyde, in Scotland, which was purchased by Lithgows in 1919 but continued to trade under its own name until 1926....

, Port Glasgow

Port Glasgow

Port Glasgow is the second largest town in the Inverclyde council area of Scotland. The population according to the 1991 census for Port Glasgow was 19426 persons and in the 2001 census was 16617 persons...

, launched 27 May 1915. Sold for breaking up 22 February 1935.