The U.S. Coast Guard is required by law to maintain a heavy icebreaking capability on the Great Lakes to assist in keeping channels and harbors open to navigation in response to the reasonable demands of commerce to meet the winter shipping needs of industry. The CGC MAWCKINAW (WLBB-30) is the U.S. Coast Guard's only heavy icebreaker on the Great Lakes and was designed to provide multi-mission capabilities with state of the art systems. She carries on the proud legacy and tradition of her predecessor, CGC MACKINAW (WAGB-83), who faithfully served the maritime community throughout the Great Lakes for over 60 years.


Unit Information Sheet

632 Coast Guard Drive
Cheboygan, MI 49721
(231) 597-2030