Coast Guard begins icebreaking operations in the western Great Lakes

united states coast guard 

News Release  

Dec. 15, 2017
U.S. Coast Guard 9th District Great Lakes
Contact: Mark Gill
Office: (906) 635-3232

Coast Guard begins icebreaking operations in the western Great Lakes

The Coast Guard Cutter Mackinaw, a 240-foot heavy icebreaker, breaks ice near Marine City, Mich., along the St. Clair River, Jan. 28, 2015. The cutter was operating as part of Operation Taconite, which is the ice breaking operation for the northern Great Lakes. (U.S. Coast Guard photo by Daniel R. Michelson)

 Editors' Note: Click on image to download high resolution version. 

SAULT SAINTE MARIE, Mich. — U.S. Coast Guard Sector Sault Sainte Marie commenced Operation Taconite today in response to expanded ice growth in the commercial ports of western Lake Superior and the lower St. Marys River. Before ice impedes commercial navigation, icebreakers were assigned to each region.

Today, U.S. Coast Guard Cutter Alder was assigned to manage the ice breaking needs of western Lake Superior, specifically the twin ports of Duluth, Minnesota, and Superior, Wisconsin, as well as the Port of Thunder Bay, Ontario. U.S. Coast Guard Cutter Biscayne Bay was assigned to the St. Marys River. In the coming days as ice growth expands on the Great Lakes, additional Coast Guard ice breakers will join the operation.

Operation Taconite is the Coast Guard’s largest domestic icebreaking operation. The operation encompasses Lake Superior, St. Marys River, the Straits of Mackinac, Georgian Bay, and Lake Michigan. In the coming weeks, various commercial waterways may close after due consideration is given to the protection of the marine environment, the need for cross-channel traffic (e.g. ferries) and the safety of the island residents; who, in the course of their daily business, traditionally use naturally formed ice bridges for transportation to and from the mainland.

The implementation of Operation Taconite places additional movement criteria on commercial ships plying the western Great Lakes, St. Marys River, and the Straits of Mackinac. These measures include restricting tanker transits to daylight in the presence of ice, reducing speeds by two miles per hour in specified locations to reduce incidental ice breaking, and requiring additional voice and position reporting points throughout the operation’s area of responsibility. The Coast Guard recommends all recreational ice users plan their activities carefully, dress appropriately, use caution on the ice and stay away from shipping channels. Recreational users and island residents should stay tuned to local media resources for the status of regional waterway closures.

Further inquiries can be made by phone to Mr. Mark Gill ( or to Vessel Traffic Service St. Marys River at (906) 635-3232.