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

[5] 15 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.

[6] 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.

[5] 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.

[2] Lauzon was purchased in 1946 by Marine Industries Ltd. Due to a belief in an increased threat by Soviet submarines, the RCN reactivated 21 frigates to combat it.

[9] In April 1954, the First Canadian Escort Squadron deployed to the Caribbean Sea for a training cruise, making several port visits.

[10] In September and October, the First Canadian Escort Squadron took part in the NATO naval exercises before performing a two-month training cruise in the Mediterranean Sea, making several port visits.

Lauzon did not take part in the NATO exercises, having undergone equipment repairs in the United Kingdom and rejoined the squadron after it had departed for the Mediterranean.