HMCS Charlottetown was a River-class frigate that served with the Royal Canadian Navy (RCN) during the Second World War.
[4] The name "frigate" was suggested by Vice-Admiral Percy Nelles of the Royal Canadian Navy and was adopted later that year.
[4] 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.
[5] 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.
[4] 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.
Charlottetown escorted two convoys to and from Gibraltar and left Derry in mid-June for HMCS Protector in Sydney where she completed a tropicalization refit in preparation for service with Operation Downfall in the Pacific War.