[5] 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 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.

[6] Following extensive work-up exercises in the vicinity of Bermuda, Toronto was assigned to escort group EG 16 which operated out of HMCS Protector at Sydney, Nova Scotia.

Magog suffered significant damage from the attack but managed to stay afloat and Toronto took her in tow.

Toronto handed off the towing duties to HMCS Shawinigan after she recorded a contact and departed to chase it down unsuccessfully.

[15] Toronto was paid off by the RCN on 14 April 1956 and transferred to the Royal Norwegian Navy as HNoMS Garm.