Scale: circa 1:600,000. Chart of the English Channel, with parts of the North Sea and St Georges Channel. With eight insets and nineteen views. Rhumb line grid. Variation. Mercators projection. Coordinates given. Blue back Insets: [Mounts Bay] 1:130,000 bar; [Long Ships] 1:130,000 bar; [Portsmouth and part of the Isle of Wight] 1:80,000 bar; [Sheerness] 1:100,000 bar; [Exmouth] 1:73,000 bar; [Ushant] 1:120,000 bar; Scilly Isles 1:65,000 bar; [Dartmouth] 1:35,000 bar