C-Map Max Chart AN-M252: Japanese Lakes (Update) Scopes NOAA Nautical Chart 18464: Port

NOAA Nautical Chart 18464: Port Townsend is a standard navigation chart used by commercial and recreational mariners alike

566 makes every 4 inches on the chart equal to one second of longitude

British Admiralty Nautical Chart 1719: China - Taiwan Strait

British Admiralty Nautical Chart 3267: North Sea – Germany

C-Map Max Chart AN-M252: Japanese Lakes (Update) Scopes NOAA Nautical Chart 18464: PortWhy Update Your C Map Chart? Why Update Your C Map Chart? It is very important that the latest C Map charts are used when sailing out in the open water for safe navigation purposes. The C Map electronic chart libraries get updated twice a year to coincide with popular boating sessions. Included in the library updates are the latest notice to mariner updates from government hydrographic offices, updates to marina facilities, port services, photos and