HMCS Stormont is a former River-class frigate that served in the Royal Canadian Navy 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.

[7] She returned to Canada in early 1945 to begin a tropicalization refit at Shelburne, Nova Scotia in preparation for service in the Pacific Ocean.

[7] It became a popular destination for celebrities and was the site of the wedding reception of Rainier III, Prince of Monaco and the actress, Grace Kelly.

[8] After Aristotle Onassis' death in 1975, his daughter Christina inherited the vessel, and donated it to the Greek government in 1978 to serve as a presidential yacht.