CCGS Sir Humphrey Gilbert was a Canadian Coast Guard light icebreaker and buoy tender and now a privately owned Arctic icebreaker Polar Prince. The ship entered service with the Department of Transport Marine Service in 1959 and transferred to the newly created Canadian Coast Guard in 1962, active until 1986. The icebreaker was sold to private interests in Newfoundland and the ship sat idle after 2001 until resold in 2009 to and renamed Polar Prince. Rebuilt, the icebreaker is now plying the waters of the Arctic Ocean. In 2017, the vessel was temporarily rechristened Canada C3 and used for a high-profile voyage around Canada's three maritime coasts as part of the nation's 150th anniversary.