Skip Navigation

Security Levels

National Terrorism Advisory System (NTAS) check current status

USCGC Mackinaw Crest   D9 Banner D9 logo

USCGC Mackinaw (WLBB-30)


The U.S. Coast Guard is required by law to maintain a heavy ice breaking 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 USCGC MACKINAW (WLBB-30) is the U.S. Coast Guard's only heavy icebreaker in 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, USCGC MACKINAW (WAGB-83) who faithfully served the maritime community throughout the Great Lakes for over 60 years.

Missions of the USCGC MACKINAW (WLBB-30)

  •  Search and Rescue (SAR)
  •  Maritime Homeland Security
  •  Law Enforcement


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


Last Modified 2/9/2015