HMS Hever Castle (K521) depth on the fuses of the projectiles until the moment of firing. A single Squid-launched attack had a success rate of 25%. The class was also provided with HF/DF and Type 277 radar. "Hever Castle" was ordered on 23 January 1943. The ship, named for Hever Castle in Hever, Kent, was laid down on 29 June 1943 and launched on 24 February 1944. At some point in 1943, the ship was transferred to the Royal Canadian Navy. The corvette, renamed "Copper Cliff" after a suburb of Sudbury, Ontario, was commissioned into the Royal Canadian Navy on 25 February 1944 with
Guy Hever again to no avail. In 2016 the IDF made another search, this time on land, but found no trace of Hever. The army also followed up on a lead from a psychic medium, and found human remains and clothes of a different individual in the Golan. In 2017, the IDF raided a home for the mentally ill in the southern city of Rahat following a report than Hever was being kept there, but subsequently determined he was not there. The Hever case has received significantly more attention that other missing person cases, including missing soldiers, and his name is often