The fourth HMS Rupert (K561) was a Captain-class frigate of the Royal Navy, originally constructed as a United States Navy Buckley class destroyer escort (DE-96). Built at Bethlehem-Hingham Shipyard in Hingham, Massachusetts, she was laid down on 25 August 1943 and launched on 31 October 1943. Upon her completion, she was transferred to the United Kingdom on 24 December 1943, and simultaneously commissioned into the Royal Navy as HMS Rupert (K561). Designed as a convoy escort and patrol vessel during World War II, HMS Rupert served primarily in these roles from 1943 to 1946. Her service record includes notable engagements against German submarines. On 30 March 1945, she participated in a depth charge attack alongside the British frigate HMS Conn (K509), resulting in the sinking of the German submarine U-965 north of Scotland. Another significant event occurred on 27 April 1945, when U-1105 detected three British frigates, including Rupert, off the coast of Ireland. U-1105 launched two G7es ("GNAT") torpedoes at the British vessels. One torpedo struck the HMS Redmill (K554), causing severe damage, including blowing off over 60 feet of her stern. Rupert stood by Redmill, providing assistance while Redmill was eventually towed to Lisahally, Northern Ireland. Throughout her service, HMS Rupert played a crucial role in anti-submarine warfare, contributing to the Allied efforts to neutralize German U-boats in the Atlantic. After the war, the Royal Navy returned HMS Rupert to the U.S. Navy on 20 March 1946. The U.S. Navy struck her from its Naval Vessel Register on 17 April 1946, and she was sold for scrap on 17 June 1946. Her operational history highlights her importance as an escort vessel in the Battle of the Atlantic, exemplifying the cooperation between the US and UK navies during wartime.

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