Sailing directions for the circumnavigation of England, and for a voyage to the straits of Gibraltar. (From a 15th century ms.) Mentions Waynes and Weirs at Orwell Haven (Fish wiers?)
Ebook
Google Books Has a good description of shoals. Shows SHMs such as Cutler being Red Cones. Some good Middle Ground Buoys at Gabbard. 19 feet into Harwich. Description of Deben. Submarine Bells
1915 USNO England East Coast Pilot Harwich extract
Available as a book or on Google Books.
2004 The Essex Coastline then and now
On Google books Good description buoys and channels.
1844 The improved coaster’s guide, and Marine board examination, for ...
Available on Hathitrust The Way of a ship
1937 The way of a ship; an essay on the ...
First British Navigation Manual. Full text. How to do navigation. Lost – try here