Boston Harbor Entrance to York, Maine. Featuring waypoints for major buoys, courses and distances, wreck sites, and ramp locations and information. 14" x 60", scale 1:53,333 with insets.Use these unique flip fold” charts in any weather! Charts are oriented to coastlines; just flip a fold to follow your course. Extensive coverage in single kits saves you money over multiple paper charts. Useful features include launch ramps, pre-plotted courses and distances, Lat/Lon coordinates for navaids and full color illustrations of gamefish.