HMS Carstairs was a Hunt-class minesweeper of the Royal Navy from World War I. She was originally to be named Cawsand, but this was changed to avoid any conflict between the vessel name and a coastal location.

History
United Kingdom
Builder	Bow, McLachlan and Company, Paisley, Scotland
Launched	19 April 1919
Fate	Sold 26 April 1935 to Thos. W. Ward, Grays
General characteristics
Class and type	Hunt-class minesweeper Aberdare sub-class
Displacement	710 tons
Length	231 ft (70 m)
Beam	28 ft (8.5 m)
Draught	8 ft (2.4 m)
Propulsion	Yarrow-type boilers, Vertical triple-expansion engines, 2 shafts, 2,200 ihp
Speed	max 16 knots
Range	140 tons coal
Complement	73 men
Armament	1 × QF 4-inch (102 mm) forward QF 76 mm (3.0 in) aft 2 × twin 0.303 inch machine guns

On 4 January 1924 she was renamed HMS Dryad, but reverted to Carstairs on 15 August 1924.