the old "mackinaw" moved under its own power on 21 june 2006 from the port of its decommissioning to a permanent berth at the dock at the ship's namesake port, mackinaw city, michigan where she now serves as a museum ship known as icebreaker mackinaw maritime museum. the vessel is docked on the eastern end of the old railroad dock; entry to the dock area is just south of the shepler’s marine service.