 Between 23 August and 5 October 1989, "Cormorant" and conducted defence research as part of Operation Norploy 89, which took place in the Arctic region of Canada, mainly in Baffin Bay, Lancaster Sound and the Davis Strait.Using the submersible SDL-1 deployed from "Cormorant", the sunken vessel was discovered, a ship not seen since its sinking in 1853.