C-Map Max-N+ Chart NA-Y071: US Lakes: West (Update) NIMA/NGA Sailing Directions East Limit 11� 15'

East Limit 11� 15'

Silencer switch

North Limit 29� 32'

(example: WVNSA910MAP10

West Limit 9� 43'

C-Map Max-N+ Chart NA-Y071: US Lakes: West (Update) NIMA/NGA Sailing Directions East Limit 11� 15'Why 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