Scale: circa 1:1,000,000. Printed chart of the North Sea with seven insets, two coastal elevations and twenty-seven views of lighthouses and beacons. Lights coloured Insets: 1. Helgoland (1856) 1:60,000 bar; 2. Sands off Hasborough (1828-55) 1:350,000 bar; 3. Bridlington Bay (1842-50) 1:90,000 bar; 4. Farn Islands (1856) 1:75,000 bar; 5. Christiansand 1:160,000 bar; 6. Arendal Inlet (1843) 1:250,000 bar; 7. Approaches to Bergen (1842-49) 1:400,000 bar