[Jade]

Hi Eamonn,

It looks like you can set the AIS to the same port that the GPS or Instruments are using and setup the IP address and port number for that. Here's a quote from the MacENC help:

In addition to processing NMEA data to/from standard serial NMEA instruments, NMEA data can be received over TCP/IP or UDP/IP connections (client) and NMEA data received in the GPS, AIS/Radar, or Instruments panels can be sent to TCP/IP (server).

The TCP/IP window is accessed via "TCP/IP" on the "GPS" menu.

As a TCP/IP client all NMEA data received over a host (IP address or name) and port is routed into the GPS panel. Once a valid host and port is entered selecting the "Enable" button will allow processing of NMEA data. The Client status indicator will turn yellow as the connection is made, and green once the connection is established. If it is desired to have the NMEA data processed in the AIS/Radar and/or Instruments panels then select "Use GPS Port" in the respective panel Settings drawer. If a "Repeat To" port is selected in the GPS panel Settings drawer, the received NMEA data will be repeated to that port (assuming "Autopilot Only" is not selected). In the GPS panel Settings drawer, the "Type" of "IP Only" can be selected indicating that NMEA data will only be received via IP and no connection will be made to a serial port.

However, this may not be available in GPSNavX. In which case, the AIS must use NMEA 0183 wiring using either a serial adapter or a USB/WiFi Multiplexer:

An AIS (Automatic Identification System) receiver or RADAR can be connected to your Mac. The NMEA data can come through a serial port such as the Keyspan High Speed Serial Adapter.