After discussions about Canada's current fleet, the United Kingdom agreed to lend the Royal Canadian Navy a flotilla of C-class destroyers in January 1945.

[6] In April 1948, while returning from a training cruise with the cruiser Ontario, the two ships came across a floating mine left over from the Second World War.

[7] In October 1948, Crescent joined Ontario, destroyers Cayuga, Athabaskan and the frigate Antigonish in sailing to Pearl Harbor, Hawaii; the largest deployment of the Royal Canadian Navy following the war.

[10] Crescent, the first Canadian warship to enter Chinese waters, sailed to Nanjing via the Yangtze River on 11 March.

The captain acted with great sensitivity to defuse the crisis, entering the mess for an informal discussion with the disgruntled crew members and carefully avoided using the term "mutiny" which could have had severe legal consequences for the sailors involved.

Crescent and La Hulloise returned to Europe in August and in December, the two ships visited Cuba while training in the Caribbean Sea.

[18] She was modernised for anti-submarine warfare and to serve as a fast fleet escort, similar to the Type 15 frigate of the Royal Navy, the second Canadian warship to so.

Half of her gun armament was replaced by sonar, a Mark 10 Limbo anti-submarine mortar and homing torpedoes.