HMCS Whitby was a modified Flower-class corvette that served with 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.

The platform for the 4-inch main gun was raised to minimize the amount of spray over it and to provide a better field of fire.

It was also connected to the wheelhouse by a wide platform that was now the base for the Hedgehog anti-submarine mortar that this version was armed with.

In October 1948 she was converted to a pilot tender for use in Portuguese East Africa at Maputo, in what became known as Mozambique.