GPS Devices

There are two general device types for GPS:

1. Onboard GPS – A GPS enabled device, stand alone, or part of a Multi-Function Display or possibly another equipment type such as an AIS transceiver installed on your boat.
2. Portable GPS – Dedicated GPS device, includes simple wired antennas to full function hand held devices with maps/charts and a display.

This article will consider only portable GPS for connection to your Mac. The onboard one is a larger topic to be covered in a separate article.

Of the portable variety let’s discuss by type:

Handheld multi-function.

These are GPS devices designed primarily for stand alone use. That is they have displays for maps and charts, input keys to control the device, and are typically intended for excursion sporting (hunting, hiking, off-roading, etc). Some Garmin products have specific Marine function and nautical charts.

This Amazon search will show a ton of examples.

Some of these will have USB connections for a PC interface; however, that connection may not communicate to anything other than proprietary apps or to transfer tracks and routes.  Most will not work for MacENCx64.

Others will have bluetooth support for connecting to PC and do NOT work on macOS Monterrey and later. We no longer recommend or support bluetooth GPS devices.

You can check user manuals to determine if the intended device can communicate (USB or Bluetooth) using the NMEA 0183 standard. If yes, then it will work. If they don’t specify then you should assume it will not.

Wired (USB) GPS Antenna.

There are a few USB GPS devices out there that have come and gone over the years. A large crop of them require a manufacturer supplied device driver (system extension.

Apple has warned manufacturers and users that system extensions of this type are discouraged and will be deprecated in a future release of macOS.

We support those USB devices that use the native (built in) macOS provided USB Serial support. We have tested quite a few and have verified and recommend these (and USB Adapters for newer USB-C Macs:

Other tested and known working devices:

UPDATE: Apple deprecates bluetooth serial support breaking all  manufacturers’ Bluetooth GPS Devices since macOS Monterey. None of the major brands work now. We no longer recommend ANY bluetooth GPS Device.

Wired Devices that require manufacturer drivers we do NOT support:

GlobalSat BU-535N5

Hope this helps and…

Happy Sailing!