Garmin BlueChart Lake Huron – Lake St. Clair Pre-Programmed Data Card for 2010/2006 & 172/178 Series

This card offers detailed coverage of Lake Huron, Georgian Bay, Lake St. Clair, Lake Simcoe, Lac Nipissing, and the Detroit River. Covers from Sault Ste. Marie to Detroit, including Saginaw, on the U.S. side, and from Sault Ste. Marie to Goderich, Ont., including Parry Sound, on the Canadian side (c