M

MCM Marine Inc., Sault Ste. Marie, MI

MacDonald Marine Ltd., Goderich, ON

Malcolm Marine, St. Clair, MI

Marine Services Inc., Oak Park, MI

Marine Tech LLC, Duluth, MN

Maritime Corp., Washington Twp., MI

Martin Gas and Oil, Beaver Island, MI

McAsphalt Marine Transportation Ltd., Scarborough, ON

McKeil Marine Ltd., Hamilton, ON

McMullen & Pitz Construction Co., Manitowoc, WI

McNally International Inc., Hamilton, ON

Michels Corporation, New Berlin, WI

Midwest Maritime Corp., Franklin, WI

Mike Scruton Marine, Port Dover, ON

Miller Shipping Ltd., St. John’s, NL

Milwaukee Harbor Commission, Milwaukee, WI

Montreal Boatmen Ltd., Pointe-aux-Trembles, QC

Montreal Port Authority, Montreal, QC