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
Hever Golf Rose in the straight, but faded in the closing stages to finish eighth of the thirteen runners behind Desert Stormer. Hever Golf Rose failed to win in thirteen starts as five-year-old, despite running prominently in top sprint races all over Europe. She finished second in the Goldene Peitsche, the Holsten Trophy, the King George Stakes, the Taby Varsprint and the Bénazet-Rennen, and third in the July Cup, the Nunthorpe Stakes, the Prix de l'Abbaye and the Premio Omenoni. After her narrow defeat in the King George Stakes the "Independent's" correspondent described her as "one of the most willing and popular horses