[6] Fifteen Canadian frigates were initially fitted with a single 4-inch gun forward, but with the exception of HMCS 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 irregular ASDIC.

The most notable escort duty was alongside HMCS Buckingham on 13 May 1945 approximately 140 miles (225 km) south-southeast of Sable Island, Nova Scotia.

[4] Inch Arran was sold to Marine Industries Ltd. in 1946, but was reacquired by the RCN in 1951 as one of the ships chosen to undergo conversion to a Prestonian-class ocean escort.

She underwent the conversion at Saint John, New Brunswick, which involved a flush-decked appearance, with a larger bridge and taller funnel.

[10] In March 1961, Inch Arran was among the ships that took part in a combined naval exercise with the United States Navy off Nova Scotia.

[11] During the Cuban Missile Crisis, Canadian aircraft located the Soviet intelligence trawler Shkval about 500 miles (805 km) southwest of Argentia.