HMCS Cowichan (hull number MCB 147) was a Bay-class minesweeper that served in the Royal Canadian Navy during the Cold War.

Renamed La Malouine, the ship was converted to a territorial patrol vessel in 1973 and remained in service until 1977.

The Bay class were designed and ordered as replacements for the Second World War-era minesweepers that the Royal Canadian Navy operated at the time.

[2][note 1] The Bay-class minesweepers were powered by two GM 12-cylinder diesel engines driving two shafts creating 2,400 brake horsepower (1,800 kW).

[5] Cowichan remained in service for only a few months with the Royal Canadian Navy as the vessel was paid off on 31 March 1954.