‘CGC Mackinaw’

Photo of CGC Mackinaw breaking ice.

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)

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)