HMCS Preserver is a Canadian Protecteur-class auxiliary oiler replenishment of the Royal Canadian Navy commissioned in 1970. Built by Saint John Shipbuilding in Saint John, New Brunswick, she underwent a major refit in 2005, after the ship was plagued by electrical problems. Badge Description - Azure a life preserver Argent cabled Or charged on the centre chief point with a maple leaf slipped Gules and within the ring a starburst also Argent