Two charts, one on each side, saves you money! Convenient size is easy to fold and store. Exceptionally well printed on synthetic paper, these charts are impervious to water, fresh or salt. Use them on deck in rain and spray! They are updated regularly and used by the U.S. Coast Guard and Navy. Loran and GPS coordinates are printed directly on most charts. Special editions for fishing and diving include information and exact positions for wrecks and reefs. Large print editions have larger type, bigger place names and brighter colors. All editions now contain information on obtaining free updates. Each ShWt 0.5