← Home ⛵ Instruments
connecting to Signal K…
–
wind kn
–
▮ apparent   ▮ true  ·  needle = wind off the bow
–kn
Speed (STW)
–°
Heading
–m
Depth
–kn
TWS
–°
TWD
–°
Heel
–kn
SOG (GPS)
–°
COG (GPS)
–°
AWA
🗺️ Connect OpenCPN to this boat

Point OpenCPN at the boat and you get the same instruments and AIS on the chart. Add these under Options → Connections → Add Connection.

Signal K — instruments + AIS (preferred)
–
Network · Protocol Signal K · Port 3000
NMEA 0183 over TCP — fallback
–
Network · TCP · Port 10110 · Receive

Don’t have it? Download OpenCPN — free and open source, and the charts stay on your machine. Telltale doesn’t replace your plotter; it reads the same boat and adds the fleet, the replay and the results.

Live off the boat's Signal K. Numbers are the raw instrument values (SI → display) — the dial is smoothed for reading. A value greys out if its sensor goes quiet (>6 s). Glance, don't stare.

Your data is yours. These instruments stay between this screen and your boat’s Signal K unless you choose to share — sharing unlocks more (like the full live view for your crew). Anything public is aggregated, never traceable to your boat.