Veteran broadcaster Mort Crim narrates this documentary which takes viewers along on the final mission of the Mackinaw after 60 years on the Great Lakes. The journey follows the "Mighty Mac" as it breaks ice in the picturesque St. Mary's River and through ice-choked Whitefish Bay to open commercial shipping lanes.

Breaking Ice chronicles the "changing of the guard" as the World War II era veteran yields to the new Mackinaw, a 100-million dollar, ultra-modern replacement. After the commissioning ceremony, the crew puts the new cutter to the test in ice over 2 feet thick in Green Bay.

Tuesday, 2/27 from 9-10 p.m. ET

none