[GPSNavX]

GPSNavX will automatically load the most detailed chart when a GPS is connected and "Auto Open" on the "File" menu is selected. Many other ways to open charts in GPSNavX ..

- Double click on a chart file (.kap,.cap,.nos) in a Finder folder.
- Use the Chart List window via "Open Charts..." menu-item on the "File" menu.
- Use the Chart List window via "Open Charts..." [Control] [click].
- [Control] [click] and select "Open Detailed."
- Select "Chart Bounds" tool on the Chart Settings panel and double click inside or outside bounds.
- Select "Auto Open.." menu-item on the "File" menu.
- Select a "Previously opened chart from the "File" menu.

I don't believe Polarnavy supports the official Canadian Great Lakes encrypted BSB 4/5 Charts that come from CHS (Via X-Traverse or Fugawi).

Neither product costs very much so one could certainly use both.