Vector Wars: Navionics Triumphs
The Navionics Platinum card wows us with excellent cartography and an extensive photo library. The Garmin BlueChart is expensive and has no photo library. The C-Map card was prone to occasional inaccuracies during testing.  
  
We tested four cartography cards. The Garmin BlueChart was loaded in the Garmin 3010C, which is the unit on the top of the console, all the way to port. The brand-new Navionics Platinum was run in the Raymarine E120 (middle). The C-Map NT+ Max was installed in the Standard Horizon CP-1000C, to starboard. Flush-mounted in the console is the Northstar 6000i networked system, which was used to test the Navionics Gold card. Click here for the complete report (pdf).