USCGC Mackinaw (WAGB-83) was a 290-foot (88 m) vessel specifically designed for ice breaking duties on the Great Lakes. Mackinaw's design was based on the "Wind" class of Coast Guard icebreakers, but the cutter was built wider and longer than the other Wind class vessels so that her draft would be shallower. Because of this, the Mackinaw was unique in the Coast Guard fleet.
The old Mackinaw moved under its own power on June 21, 2006 from the port of its decommissioning to a permanent berth at the SS Chief Wawatam dock at the ship's namesake port, Mackinaw City, Michigan where she now serves as a museum ship known as Icebreaker Mackinaw Maritime Museum.
Displacement: 5,252 long tons (5,336 t)
Length: 290 ft (88 m)
Beam: 74.3 ft (22.6 m)
Draft: 19.5 ft (5.9 m)
Speed: 15 kn (28 km/h/17 mph)
Complement: 8 Officers, 67 Enlisted
USCGC Mackinaw (WAGB-83) Wikipedia Entry