This is a list of corvette and sloop classes of the Royal Navy. In 1937, Escort Sloops were officially re-rated as Escort Vessels and Patrol Sloops as Patrol Vessels, although the traditional term continued in use. In 1948 surviving sloops and corvettes were redesignated as frigates.

[edit] Corvette classes

19th century screw corvettes

Jason class — 6 ships, 1859–1863
Juno class — 2 ships, 1867–1869
Eclipse class — 7 ships, 1867–1870
Briton class — 3 ships, 1869–1871
Volage class — 3 ships, 1869–1874
Amethyst class — 5 ships, 1873–1874
Bacchante class — 3 ships, 1875–1877
Comus class — 9 ships, 1878–1881
Satellite class — 7 ships, 1881–1884
Calypso class — 2 ships, 1883–1884

World War II corvettes

Flower class — 267 ships, 1939–1945
Castle class — 44 ships, 1943–1944

[edit] Sloop classes

19th century and pre-World War I sloops

Fantome class — 6 ships, 1873–1874
Osprey class — 14 ships, 1876–1880
Dolphin class — 2 ships, 1882–1883
Mariner class — 6 ships, 1884–1888
Nymphe class — 4 ships, 1885–1888
Beagle class — 2 ships, 1889
Albert class — 2 ships, 1894
Phoenix class — 2 ships, 1895
Condor class — 6 ships, 1898–1900
Cadmus class — 6 ships, 1901–1903

World War I sloops

Flower classes of "convoy sloops"
- Acacia class — 24 ships, 1915
- Azalea class — 12 ships, 1915
- Arabis class — 36 ships, 1915–1916
- Aubretia class — 12 ships, 1916–1917
- Anchusa class — 28 ships, 1917–1918
P class — 45 ships, 1915–1917
Kil class — 81 ships, 1917–1919
PC class "Q-ships" — 19 ships, 1917–1918
24 class — 22 ships, 1918–1919