HMCS Stormont was a River-class frigate that served in the Royal Canadian Navy during the Second World War, primarily engaged in the Battle of the Atlantic and Arctic Ocean operations. Laid down on December 23, 1942, by Canadian Vickers Ltd. in Montreal, she was launched on July 14, 1943, and commissioned at Quebec City on November 27, 1943, with the pennant K327. Designed by William Reed of Smith's Dock Company, the River-class was an improvement over earlier corvette classes, featuring better accommodations, extended range (up to 7,200 nautical miles at 12 knots), and enhanced anti-submarine weaponry. The ship was equipped with twin 4-inch guns (originally a single mount in some ships, later upgraded), a Hedgehog anti-submarine mortar, depth charges, and side-mounted throwers. It also carried advanced sonar and radar systems, including the 147B Sword horizontal fan echo sonar transmitter, which allowed continuous contact with targets during attack. Stormont's service record included joining the Atlantic Fleet based in Halifax under Commander George Myra. She was part of escort group EG 9 out of Derry in March 1944 and supported Operation Neptune, the Normandy invasion, in June 1944. Notably, she towed the damaged HMCS Matane to Plymouth after a glider bomb attack and escorted convoys to Gibraltar and the Murmansk run to the Kola Inlet. During her wartime service, she logged a record 63 days at sea, the longest active period of any Canadian frigate during the war. After returning to Canada in early 1945, she began a tropicalization refit for Pacific service, which was canceled following Japan's surrender. She was decommissioned on November 9, 1945, and placed in reserve. Post-war, Stormont was sold in 1947 for merchant conversion, but in 1951 was purchased by Greek billionaire Aristotle Onassis. She was extensively rebuilt as the luxury yacht Christina, featuring a swimming pool, spiral staircase, and 19 staterooms, becoming a symbol of opulence and celebrity. After Onassis's death, she was donated to Greece and served as a presidential yacht before falling into disrepair. Restored in the late 20th century, she remains in operation as of 2024, now known as Christina O, with a storied legacy spanning military service and luxury yachting.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.