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NMEA & Instruments

In the app: Settings > NMEA & Instruments -- "Device connections, GPS sharing, data overlays"

Connections to onboard instruments, and which of their readings the app shows and shares.

Settings

Setting What it does
Depth Sounder Offset Correction (in feet) for where your transducer sits — use it to read depth from the waterline or keel.
Depth Data Sharing Share your depth readings with your fleet so group members can see them on their maps.
AIS Sharing Upload AIS targets received by your onboard receiver so the whole fleet benefits from your coverage.
Enable NMEA Location Updates Use the boat's NMEA GPS as your position instead of this device's GPS — usually more accurate.
Share my GPS over Wi-Fi Other devices on this network that are sharing their GPS. Tap Connect to use one as your position source.
Show Depth Overlay Show the current depth reading from your sounder on the map.
Show Temperature Overlay Show the water temperature reading on the map.
Show Wind Overlay Show wind speed and direction from your instruments on the map.
Show Engine Overlay Show engine telemetry (RPM, temperature, alarms) on the map.
Log Engine Data Record engine telemetry history for viewing on the Engine History page.

Removed: Use Starlink for GPS

Starlink discontinued the local-network location sharing that Bristol Maps relied on, so the Starlink router can no longer be used as a GPS source. The Use Starlink for GPS option has been removed from this settings group. Use a device with built-in GPS (a cellular iPad or a Hugerock tablet), the boat's NMEA GPS via Enable NMEA Location Updates, or an external GPS receiver instead.

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