Small but mighty, the Coast Guard Cutter Raritan towed the carferry City of Midland into Ludington harbor. The 100-foot tug and the Coast Guard Icebreaker Mackinaw had come to the assistance of the carferries Spartan and City of Midland after the ships became lodged in the ice just outside of Ludington breakwaters in February 18, 1977. The ice, packed tight by the wind, had damaged the rudder of the Midland.