Preliminary Chart of Portsmouth Harbor New Hampshire

Chart of Portsmouth Harbor, New Hampshire, and Maine. Shows great inland detail of farmland, roads, vegetation, buildings, towns, settlements, etc. Depth soundings, shoals, bottom conditions, lighthouses, aids, and hazards to navigation are shown for the harbor and approaches. Extensive details of various bays, islands, rocks, inlets, rivers, creeks, and ponds. Sailing directions, dangers, notes, and tidal information are also given. IMPORTANT NOTE: All of our United States Coast Survey (USCS), United States Coast & Geodetic Survey (USC&GS), and similar maps and charts have been professionally unfolded and flattened using humidity baths, semi-permeable membrane, and drying blotter techniques. Most others you typically see on eBay have not been, and worse, are quickly and crudely unfolded for the low-quality photos you see. Unfolding these maps in that way is damaging and weakens them. Please be aware.