She is considered a significant part of Canadian naval history as used for some early trials of helicopter landings on smaller escort vessels.

[3] The River-class frigate was designed by William Reed of Smith's Dock Company of South Bank-on-Tees.

[6] The name "frigate" was suggested by Vice-Admiral Percy Nelles of the Royal Canadian Navy and was adopted later that year.

[6] 15 Canadian frigates were initially fitted with a single 4-inch gun forward but with the exception of Valleyfield, they were all eventually upgraded to the double mount.

[7] For underwater targets, the River-class frigate was equipped with a Hedgehog anti-submarine mortar and depth charge rails aft and four side-mounted throwers.

[6] River-class frigates were the first Royal Canadian Navy warships to carry the 147B Sword horizontal fan echo sonar transmitter in addition to the regular ASDIC.

She remained with this unit until the end of hostilities in Europe performing local escort duties for coastal convoys along the eastern coast of Canada.

[3] On 10 May, U-889 was spotted south of Newfoundland by a RCAF airplane, steaming at 10 knots (19 km/h; 12 mph) and flying a black flag of surrender.

[8] In June 1945, Buckingham began a tropicalization refit at Liverpool, Nova Scotia in preparation for service in the Pacific Ocean.