HMS Calpe: Command Ship for the Dieppe Raid, and a Hospital for a Quarter of Her Own Crew

HMS Calpe

A Destroyer Built for Escort Duty

HMS Calpe was built by Swan Hunter at Wallsend, ordered in December 1939, her keel laid the following year and launched and completed in 1941, entering service on 11 December that year before proceeding to Scapa Flow. A Type II Hunt-class escort destroyer displacing 1,050 tons standard and up to 1,490 tons at full load, she carried six 4-inch guns on twin mounts, Vickers and Oerlikon guns, and six Thornycroft depth charge throwers, a solid escort destroyer that would go on to play a genuinely pivotal role in one of the most controversial Allied operations of the entire war.

Directing the Dieppe Raid

HMS Calpe served as the command ship for the raid on Dieppe, Operation Jubilee, on 18 and 19 August 1942, with Major-General John Hamilton Roberts, commanding the 2nd Canadian Infantry Division, and Captain John Hughes-Hallett, the naval commander for the raid, directing operations from her bridge throughout the disastrous assault. The Dieppe Raid became one of the costliest single actions of the war for the troops involved, particularly the Canadian forces who bore the brunt of the fighting, and HMS Calpe's crew found themselves in the middle of it: as casualties mounted ashore and offshore, the ship was pressed into service as an improvised hospital ship, accommodating 278 casualties even as she herself lost approximately a quarter of her own complement, a genuinely harrowing statistic for a ship whose crew were meant to be directing the battle rather than becoming casualties of it themselves.

Convoys, Combat, and a U-boat Kill

Beyond Dieppe, HMS Calpe's war included convoy escort duties, operations off Saint-Jean-de-Luz in April 1942, and an engagement with the German patrol vessel Vorpostenboot V202 Hermann Bösch that July. She took part in Operation Torch, the Allied invasion of North Africa, in November 1942, and in December 1943 worked alongside the American destroyer USS Wainwright to sink the German submarine U-593, a genuinely significant joint Allied success against the U-boat threat that had defined so much of the naval war up to that point.

A Long Danish Retirement

HMS Calpe was placed in reserve in 1946 and loaned to the Royal Danish Navy in 1952, recommissioned as HDMS Rolf Krake and serving Denmark for nine years before being purchased outright by the Danish government. Rolf Krake, the former HMS Calpe, remained in active Danish service until October 1966, when she was finally scrapped at Ystad in Sweden, closing out a career that had begun with escort duty and reached its most consequential and costly moment directing one of the war's hardest lessons in amphibious assault planning, a lesson the Allies would carry directly into the planning for D-Day less than two years later.