Complete Chart Coverage for Wahington States's San Juan Islands. Includes Index Chart page index on front cover. Ideal for Sailors, Fishing Boats, Trawlers, and Trailer Boats Waterproof, tear-resistant pages Ful color, 23 pages of high resolution charts GPS waypoits with Lat/Lons Pre-plotted courses with range and bearings Easy-to-use 18" x' 12" size