HMCS Thorlock was a modified Flower-class corvette that served in the Royal Canadian Navy during the Second World War.

[3][4][5] The "corvette" designation was created by the French as a class of small warships; the Royal Navy borrowed the term for a period but discontinued its use in 1877.

[6] During the hurried preparations for war in the late 1930s, Winston Churchill reactivated the corvette class, needing a name for smaller ships used in an escort capacity, in this case based on a whaling ship design.

Eventually the Canadian corvettes would be modified to allow them to perform better on the open seas.

She was transferred to the War Assets Corporation and sold to the Chilean Navy in 1946.