Four steps. Zero new hardware.
Deckhand is software. It works because Navico — the parent of Simrad, Lowrance, and B&G — already ships an open data interface on every modern MFD. We just built the app that listens properly.
Your MFD broadcasts
Every modern Simrad, Lowrance, and B&G unit exposes a local WebSocket — the Navico GoFree API — that streams everything the NMEA 2000 bus is carrying. Engine data, GPS, depth, wind, water temperature. It's already on your boat's Wi-Fi.
Deckhand listens
Open the app near your helm. Deckhand connects to your MFD automatically, subscribes to the signals it needs, and starts the session — no pairing, no setup wizard, no hardware.
Your boat writes its own logbook
Trips auto-start when the engine fires and you leave the slip. Every data point is captured locally first, then synced to your private vault. Works offline — phones don't get signal 12 miles out.
Patterns surface before problems do
Deckhand correlates telemetry across every trip. A slow climb in coolant temp, a voltage sag that only shows up under load, an impeller closing in on its hour interval — you hear about it at the dock, not the sandbar.