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

[2][3][4] 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.

[5] 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.

[10][11] After working up in Bermuda, Peterborough was assigned to the Mid-Ocean Escort Force (MOEF).