Single sheet on linen-backed paper. Hand coloured engraving. Scale [circa 1:1,000,000 (bar)]. The bar scale is in nautic miles. The chart is ungraduated. It contains a key to ships, headquarters of Divisions, stations, detachments and batteries. The coastline is coloured to show the location of Divisions. Railway, telegraph and telephone lines are marked.

The Irish Coast Guard, formed in 1822, had revenue-protection and coastal defence roles and was also a reserve force for the British Navy.