Yes! With some caveats. (as usual)
The short answer is: The app “GPS2IP” can broadcast your iPhone’s GPS data over WiFi so your Mac can see it and MacENCx64 can use it.
The Caveats.
You need WiFi. If you have a WiFi router on your boat, then you can connect your iPhone and Mac to that WiFi hotspot and even without internet, transmit the GPS data you need.
If you don’t have WiFi on board, you can use your iPhone’s WiFi hotspot to connect your Mac. The caveat for this option: You will only have connection while in cell range. Without internet from your cellular provider, the phone’s hotspot won’t turn on. In densely developed coastal areas, lakes, and rivers, this can work. Far afield, not so much.
How to set it up:
- Don’t run MacENCx64 just yet. You want the connection going first.
- On your iPhone, go to the app store and search for “GPS2IP” and get the app.
- Make sure your Mac and your iPhone are on the same WiFi network. If you don’t have a separate WiFi network, then turn on your iPhone’s hotspot (Settings => Personal Hotspot).
- Go to GPS2IP on your phone and make note of the IP address and Port number.
- Slide the Enable switch to ON so the app starts broadcasting.