| Navy | The Royal Navy |
| Type | ASW Trawler |
| Class | |
| Pennant | FY 124 |
| Built by | Cook, Welton & Gemmill (Beverley, U.K.) |
| Ordered | |
| Laid down | |
| Launched | 27 Apr, 1937 |
| Commissioned | Sep, 1939 |
| End service | |
| Loss position | |
| History | Completed on 14 July 1937. Taken over by the Admiralty in September 1939. Displacement: 518 tons. In October 1940 Lady Elsa operated as a member of Escort Group 1 on North Atlantic escort duties. In From March until October 1942 Lady Elsa operated under American control in American waters. In January 1943 Lady Elsa arrived in South African waters to help control the alarming amount of submarine activity being experienced in this area. From February 6-12th she was docked in the Selborne dry dock at Simonstown. She operated in South African waters until the end of the war. She was returned to her owner in January 1946 and refitted for commercial use. Lady Elsa was renamed Lord Tay in 1950. Damaged by a fire on 3 September 1964. Scrapped at Grays on 20 November 1964. |
| Noteable events involving Lady Elsa include: 20 Oct, 1940 Lady Elsa also picks up 43 survivors from the British merchant Sitala that was also torpedoed and sunk by the German submarine U-100 southwest of Rockall in position 56º35'N, 17º15'W. 6 Nov, 1942 |