Scale: circa 1:500,000. Blue back chart of the Irish Sea with nineteen insets and ten views and various lighthouses and lightships etc Insets: 1. Waterford Harbour circa 1:75,000; 2. Tuskar & Channels to Wexford Harbour circa 1:150,000; 3. Dublin Bay circa 1:100,000; 4. Strangford Lough circa 1:60,000; 5. Lough Foyle circa 1:100,000; 6. Lough Carlingford circa 1:100,000; 7. Lough Larne etc. crca 1:95,000; 8. Ardglass circa 1:20,000; 9. Liverpool Bay with the coast to Menai Strait circa 1:200,000; 10. [Holyhead Bay] circa 1:90,000; 11. [Skerries] circa 1:30,000; 12. Piel Harbour & Barrow Channel circa 1:100,000; 13. [Campbelton] circa 1:100,000; 14. Ardrossan circa 1:19,000; 15. Ayr circa 1: 19,000; 16. Troon circa 1:19,000; 17. Lanlash Harbour circa 1:75,000; 18. The River Clyde to Dumbarton circa 1:150,000.