Ontario Shipyards is a wholly Canadian-owned company operating three of the largest ship construction and repair facilities in Canada. Founded in 1987, Ontario Shipyards has grown into the largest Canadian ship repair and construction company on the Great Lakes. We are a trusted partner of the Canadian Coast Guard and the Canadian flagged commercial fleet. Operating the largest number of dry dock assets in Canada, Our shipyards in Hamilton, St. Catharines, and Thunder Bay offer a wide array of vessel life cycle services from new builds, repair, maintenance, conversions, and vessel recycling.