![Preview of mariners' routeing guide](https://assets.admiralty.co.uk/public/styles/compressed/public/2024-04/Routeing%20Guides.png.webp?VersionId=oLTY0hoC1_g8klqYbN5kS2qYB72oo4Pp&itok=VR_zVuy8)
Coverage
The expanding range covers the Malacca and Singapore Straits, English Channel and Dover Strait, Southern North Sea, Irish Sea, Baltic Sea, Adriatic Sea, Turkish Straits including Strait of Istanbul and Strait of Çanakkale, Gulf of Suez, Gulf of Mexico, Panama Canal and Tokyo Wan.