The drill involved the 3,000-tonne ROKS Dosan Ahn Chang-ho submarine and the 3,100-tonne frigate Daejeon and Navy helicopters, Yonhap News Agency reported, citing data from the Korean military.

Canada's HMCS Corner Brook submarine and Ottawa frigate, as well as CH-148 shipborne helicopters, joined the drill, according to Seoul's military.

Korea's Navy said the two nations strengthened their joint operational capabilities through the naval exercises, which included anti-ship shooting and anti-submarine warfare.