C-Map Max Chart NA-M939: Passamaquoddy Bay To Block Island (Update) I - Bay of Bengal helping keep you safe by

helping keep you safe by indicating obstacles along the segments between waypoints

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C-Map Max Chart NA-M939: Passamaquoddy Bay To Block Island (Update) I - Bay of Bengal helping keep you safe byWhy 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