C-Map 4D Chart NA-D934: Lake Ontario & Trent Severn Waterway (Updated) Content:4D Max+ ensuring you are well-versed in

ensuring you are well-versed in current maritime regulations

Approaches to Ventspils is a standard nautical chart

In Heavy Weather Avoidance

Enhanced safety measures that account for unique operational characteristics of OSVs

and is corrected through change #2 July 20

C-Map 4D Chart NA-D934: Lake Ontario & Trent Severn Waterway (Updated) Content:4D Max+ ensuring you are well-versed inWhy 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