While part of the 19th Escort Group, Bullen was torpedoed by the German submarineU-775 northwest of Strathy Point, Sutherland, Scotland on 6 December 1944, striking her midships. Of the crew of HMS Bullen, 71 died and 97 survived. The wrecksite is designated as a 'protected place' under the Protection of Military Remains Act 1986.
References
Donald Collingwood The Captain Class Frigates in the Second World War Leo Cooper (1998), ISBN0-85052-615-9.
Bruce Hampton Franklin The Buckley-Class Destroyer Escorts Chatham Publishing (1999), ISBN1-86176-118-X.
Niestle, Axel (1998). German U-Boat Losses During World War II. United States Naval Institute. ISBN1-55750-641-8.