|Builders:||Belfast, Northern Ireland (50)
|Operators:|| Royal Navy
Royal Canadian Navy
South African Navy
Royal Ceylon Navy
Royal Thai Navy
|Preceded by:||Bangor-class minesweeper|
|Succeeded by:||Ton-class minesweeper|
|Displacement:||1162 tons (reciprocating engines)
1122 tons (turbine engines)
990 tons (escort)
|Length:||225 ft (69 m)|
|Beam:||35 ft 6 in (10.82 m)|
|Draught:||8 ft 6 in (2.59 m)|
|Propulsion:||Geared turbines, 2 shafts; OR
Reciprocating engines, 2 shafts, 2,000 shp (1,500 kW)
|Speed:||16.5 knots (30.6 km/h)|
|Armament:||1 × QF 4-inch (101.6 mm) Mk V anti-aircraft gun
4 × Oerlikon 20 mm cannon
Hedgehog (Escorts only)
They were designed as small vessels that could serve in several roles, not just as minesweepers; in practice the desperate shortage of convoy escorts in the Battle of the Atlantic meant that they served mainly in that role; twelve Algerines of the Royal Canadian Navy consequently never had minesweeping gear fitted.
After the war, a number continued in service as patrol boats, survey ships, and training ships. Some were sold to other navies or into merchant service. At least one - HMS Pickle (commanded by Lt. Cmdr. Hallifax) - was still engaged in minesweeping duties in British waters as late as 1954. At least one Algerine is still in service with the Royal Thai Navy: HTMS Phosampton (ex-HMS Minstrel).
|Royal Canadian Navy|
|Sault Ste. Marie|
|M900 Adrien de Gerlache (ex HMS Liberty, acquired 1949 - stricken 1969)|
|M901 Georges Lecointe (i) (ex HMS Cadmus, acquired 1950 - stricken 1959)|
|M901 Georges Lecointe (ii) (ex HMCS Wallaceburg, acquired 1959 - stricken 1969)|
|M902 Van Haverbeke (i) (ex HMS Ready - acquired 1951 - stricken 1960)|
|M903 Dufour (i) (ex HMS Fancy - acquired 1951 - stricken 1959)|
|M903 Dufour (ii) (ex HMCS Winnipeg - acquired 1959 - stricken 1966)|
|M904 De Brouwer (i) (ex HMS Spanker - acquired 1953 - stricken 1966)|
|M905 De Moor (ex HMS Rosario - acquired 1953 - stricken 1966)|
|Happy Return (J466)|
Algerines sunk in action
- Algerine was torpedoed by the Italian submarine Ascianghi off Bougie, Algeria on 15 November 1942.
- Alarm was damaged beyond repair by air attack off Bône, Algeria on 2 January 1943.
- Loyalty (ex-Rattler) was sunk by U-480 in the English Channel on 22 August 1944.
- Regulus was sunk by a mine off Corfu on 12 January 1945.
- Squirrel was sunk by a mine off Phuket, Thailand on 24 July 1945.
- Vestal was sunk by a Japanese kamikaze plane off Phuket, Thailand on 26 July 1945.
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