Given time constraints, and Canada’s needs, the purchase of subs from a country such as South Korea would make sense, said Vice-Adm. Topshee. Korea’s diesel-electric KSS-III likely meets Canada’s requirements, most crucially being able to stay at sea for several months and cover thousands of nautical miles, including to and from the Canadian Arctic. The navy is sending a group this month to Korea and Japan on a scouting mission.