Settings / AIS and NMEA

NMEA and AIS

NMEA is a marine industry standard for communicating information between on-board devices. Automatic Identification System (AIS) is a standard for exchanging vessel location and other information using VHF radio signals. AIS data is typically shared between on-board devices using NMEA.

SEAiq supports using external NMEA/AIS information over WiFi and (for devices that support it) Bluetooth. SEAiq can also be configured to act as an NMEA server, forwarding own its information to other devices.

With the appropriate configuration settings in SEAiq you can do the following:

AIS uses NMEA to communicate its data, so you will need to configure NMEA in order to use AIS.

Numerous alarms are provided for NMEA data. Among these include an alarm to indicate data corruption. When at least 5% and 10 "sentences" in the prior 5 minutes have checksum errors, an alarm will be presented. These are shown at most once per 5 minutes.

Settings

This section describes how to connect your device to an NMEA data feed over WiFi. Before adjusting these settings, you first ensure your NMEA data feed and this device are connected to the same network.

AIS Derive ROT

Standard WiFi Devices

Connection

Extra Connection (Advanced)

Saved Devices

Advanced

NMEA Server (All but SEAiq Pilot)

SEAiq supports forwarding GPS information to other devices as a new NMEA feed. This is useful, for instance, if you have an iPhone with GPS and a WiFi-only iPad without GPS. You can install SEAiq on both devices, configure the iPhone as an NMEA server and the iPad as an NMEA client.

In the example above, you first need to make sure both devices are on the same WiFi network. Then get the IP address of the iPhone by going to Settings, WiFi, and selecting the name of the network being used. Then pick a port number to use. Here we use 10000.

The SEAiq NMEA server does not currently forward AIS data, only GPS-related data (location, course, speed, etc).