A general chart of the North Sea, constructed from a great variety of original and accurate surveys more particularly those of the respective governments. Adjusted by the best astronomic observations by John Purdy.

Scale: circa 1:1,000,000. Graduated chart in two parts A & B. North to the right. Linen backed. (A) British coastline from Teignmouth to Bell Rock Light, French coastline from Calais, Dutch, German and Danish coastline (to Lemvig). Insets: 1. Christiansand [circa 1:250,000]; 2. Pentland Firth [circa 1:200,000]; 3. Balta Sound [circa 1:55,000]; 4. Bergen [circa 1:250,000]