A new chart of the river St. Laurence, from the island of Anticosti to the falls of Richelieu: With all the islands, rocks, shoals, and soundings, also particular directions for navigating the river with safety. Taken by the order of Charles Saunders, Esqr. ... in the expedition against Quebec in 1759.
Scale ca. 1:150,000.
Relief shown pictorially and by hachures. Soundings shown in fathoms.
Originally on 12 plates.
"This chart was drawn from particular surveys of the following places; and published for the use of British navigators, by command of the Right Honourable the Lords Commissioners of the Admiralty Charles Saunder, Pall Mall, May 1st., 1760."
Shows settlements, ship channels, and anchorages.
Includes text and 17 coastal views.
Insets: [River St. Laurence from Quebec to Isle of Orleans]--[River St. Laurence from Richelieu Falls to the English Bank]--[Bay of the Seven Islands]--[Mingan Island]--[Mingan Harbor]--[Gaspee Bay]--[River St. Laurence from English Bank to Green Island]
Available also through the Library of Congress Web site as a raster image.
AACR2: 100; 650/1; 651/2
The word portolan comes from the Italian adjective portolano, meaning "related to ports or harbors", or "a collection of sailing directions". Portolan charts are maps based on compass directions and estimated distances observed by the pilots at sea. They were first made in the 13th century in Italy, and later in Spain and Portugal where they considered to be state secrets. The English and Dutch found the description of Atlantic and Indian coastlines extremely valuable for their raiding, and later trading, ships. The oldest survived portolan is the Carta Pisana, dating from approximately 1296 and the oldest preserved Majorcan Portolan chart is the one made by Angelino Dulcert who produced a portolan in 1339.