Make the most of your adventures with the 3rd. edition of the Hudson River & Adjacent Waterways Chartbook & Cruising Guide. Covers miles of coastal beauty, including New York Harbor to Sorel (includes Lake Champlain). St. Lawrence River: Sorel to Cornwall. Erie and Oswego Canals - Waterford to Oswego and Lyons (includes Cayuga and Seneca Lakes).Easy to use and packed with features!This easy-to-use, compact chart book is ideal for daysailors, fishing boats, and trailer boats. It measures 12" x 17" (24" x 17" when open) and is made of waterproof, tear-resistant synthetic paper that will withstand the elements.GPS Ready: New features make Waterproof Chartbooks easy to use with your GPS. Most charts include one-minute Lat/Lon grids to make vessel positioning a breeze, and major navigation aids are identified with named GPS waypoints.Small- and Large-Scale Charts: Waterproof Chartbooks include small-scale, wide area charts as well as large-scale, detailed charts of harbors and approaches. The Chart Page Index (on the front cover) and “Go-Tox9D page numbers make it simple to find the chart you want.Pre-Plotted Courses: Maptechs navigation editors add magnetic courses between major navigation aids with distances in nautical miles. Chartbooks are also designed to help you do the calculations yourself. Each page includes a compass rose with annual increase in variation and complete scale information.