HMS Fermoy was a Hunt-class minesweeper of the Aberdare sub-class built for the Royal Navy during World War I.

The engines produced a total of 2,200 indicated horsepower (1,600 kW) and gave a maximum speed of 16 knots (30 km/h; 18 mph).

They carried a maximum of 185 long tons (188 t) of coal[2] which gave them a range of 1,500 nautical miles (2,800 km; 1,700 mi) at 15 knots (28 km/h; 17 mph).

By 1923 she had become the depot ship for the Submarine Periscope School at Portland and on 14 April Hugh Marrack was appointed in command.

[3] She was bombed by Italian aircraft off Valletta, Malta, on 30 April 1941, then on 4 May 1941, and was written off as constructive total loss.