Sailing Navigation Software and Electronics

Navigation and Sailing Instruments
When we were in Cape Town we decided to upgrade our old instruments with a new Maretron system that uses the NMEA 2000 protocol. It’s pretty awesome and has worked great for us in some pretty serious conditions.  Not only does it give us normal stuff like wind, depth, and speed but also has a full weather station built into the wind instruments that gives us barometric pressure, temperature, and humidity.  The multi function displays can be configured to show all this data over time which shows you trends graphically as your conditions change.  Too cool!
 Software and Apps
We ditched our navigation laptop in favor of tablets, which we’ve used extensively for the last 12,000 miles or so. So far all is working awesome and we have a completely wireless system including all instrument data, routing, charting, and radar!  First off we run Coastal Explorer on a Windows 10 tablet.  This is our primary navigation and charting software when sailing offshore. It is easy, simple, and just works. One of the main attractions is it also works with TCP/IP Based radar , which allows us to view radar embedded on the charts on any PC. Since all the sailing instrument, GPS, and Radar data is broadcast over Wi-Fi this little $150.00 tablet suddenly becomes a hand held, completely portable navigation super computer.  You can even do anchor watch from bed 🙂
We also use OpenCPN , which is a free and open source navigation solution for PC’s. We often run OpenCPN and Coastal Explorer side by side.  On our iPad we run iNavx  with Navionics charts. This is an awesome little program and one of the best for iPads because it gives you AIS data overlayed on the charts. Too cool!
Lastly we also have the Navionics  app for Android installed on a few devices as a backup should anything happen to the other system. Since this uses the GPS sensor on the phone it’s very portable and will work even if something happens to your main system.
Other Equipment
We use the Brookhouse NMEA multiplexer  to combine all the data from different systems together. It takes NMEA data from the autopilot, compass, GPS, AIS, and Maretron system and multiplexes it all together into one NMEA stream.  We use the Actisense NMEA 0183 <-> 2000 converter to let our new Maretron system talk to the older Raymarine Autopilot, compass, and VHF.  All the NMEA data from the navigation and boat systems are broadcast over a RS-232 Wi-FI router, allowing us to see everything on our laptops and tablets! We just grabbed the RS-232 port out of the Brookhouse multiplexor and it send all the data over Wi-Fi that way. Pretty sweet right?!?!?
System Schematic