Preliminary Chart of Muskeget Channel Massachusetts

Very detailed chart of Muskeget Channel at Martha's Vineyard, Massachusetts. This chart shows extensive bathymetric and navigational details for the mariner including number depth soundings, shading, isolines, bottom conditions, ranges and bearings, aids and hazards, reefs, shoals, rocks, breakers etc. Also shown are great inland detail including roads, farms, buildings, vegetation, topography (hachures), Holms Hole, Chappaquiddick Island, ponds, lagoons, places. Sailing directions for the various harbors and reguges are given along with tidal information and other notes to the mariner. Two nice elevation views are shown; one of Holmes Hole and the other showing a view of the north entrance to Muskeget Channel. A bonus that this map has in an extremelty nice and unusual telescopic elevation view of Cape Poge lighthouse.
This map is a medium weight paper variant.

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.