Features include shading between depth contours, spot soundings, navaids, port plans, wrecks, obstructions, inter-tidal zones, and more. BlueChart offers much larger coverage areas for half the price.
MapSource BlueChart St. Lawrence Seaway covers the St. Lawrence River from Brockville, Ont. to Sept-Iles, Que., including Montreal and Quebec. It also includes detailed coverage of Lake Champlain and Lac Saint-Jean, including Burlington, VT, Rideau River, the Ottawa River to Temiscaming, the Riviere Saguenay from Chicoutimi, Que. to the St. Lawrence River, and the Hudson River to Troy, NY.