Offline vector charts
Seamarks, depth contours and bathymetry, downloaded per area and rendered on the fly. No connection needed at sea.
Navigate by the stars. Plan with the data.
Offline nautical charts, weather and routing — in your pocket. Stellidar is the chartplotter that keeps working when the signal disappears.
Coming soonAndroid · Windows
StellidarEverything a helm needs
Multi-model weather
Wind, waves and pressure from multiple forecast models, with a timeline you can scrub hour by hour.
Weather routing
Sail, motor or auto mode: Stellidar computes the best route with your polars and the forecast.
Live AIS traffic
See surrounding vessels with CPA alarms, so crossings never take you by surprise.
Automatic logbook
Voyages detected and recorded on their own — track, timeline and map, ready to browse.
Built for real sailing
Fast on tablets at the chart table and phones in the cockpit. Offline-first by design.
A first look
Screenshot coming soon
Screenshot coming soon
Screenshot coming soon