HMCS Sussexvale was a River-class frigate that served with the Royal Canadian Navy during the Second World War.

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

[7] 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.

[8] 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.

[7] 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.

She joined the group in Derry in March and spent the rest of the war in Europe patrolling the waters around the United Kingdom.

However, with the increasing Soviet submarine threat, the Royal Canadian Navy sought to augment its anti-submarine forces.

[3] In January 1960, Sussexvale and three other Prestonian-class ships made a tour of South American ports, visiting San Diego, Balboa, the Galapagos Islands, Callao and Valparaíso, Talara and Long Beach.

In June 1960 the Fourth Canadian Escort Squadron performed a training tour of the Pacific, with stops at Yokohama, Japan, Midway Atoll and Pearl Harbor.

[17] From January to March 1961, Sussexvale, New Glasgow and Beacon Hill performed a training cruise to the South Pacific, visiting Hawaii, Fiji, New Zealand, Australia and Samoa.