'Cupola' was a British naval operation against German shipping off the western coast of German-occupied Norway (19/21 March 1945).
Part of Admiral Sir Henry Moore’s Home Fleet, based at Scapa Flow in the Orkney islands group, the British force comprised the escort carriers Premier, Queen and Searcher, the light anti-aircraft cruiser Bellona, and the destroyers Onslow, Serapis, Zest and Canadian Haida and Iroquois. The carrierborne aircraft attacked shore targets and laid mines off Askevold, the latter sinking one ship and causing others to be diverted farther out to sea, where they became targets for motor torpedo boat attack.