Route Planner FREE

Draw a polyline route → enter ship speed → analyze to see hourly conditions along the track.
Units: Wind requested from API in knots (kn) and also shown as m/s. Waves in meters (m).
Vessel: —
Setup required
Pro model v2.1: Recommended speed depends on vessel + weather (not on the speed you type). Your speed is used for ETA only.
Playback (moves along timeline)
Charts (along timeline)
Wind in kn, waves in m. Slider/Play updates the marker.
Critical hours
m kn
Summary
Violations (hard limits)
m kn
Recommended speed (MVP)
Hourly speed advice
rows
Click a time to jump. Values are UTC.
Uses wind/wave thresholds + relative angle to route. (MVP heuristic)
Critical filter: Wave ≥ threshold (red) OR Wind ≥ threshold (blue)
Worst window
Window score = sum of risk over consecutive hours.
Calm window recommendation
hours
Export
Exports include hourly points + meteo (wind/wave) + flags.
Notes:
  • This is an MVP using public map tiles + forecast APIs.
  • Use View time (UTC) or Timeline slider to highlight where you will be.
  • For real ECDIS/ENC charts, licensing + different render pipeline is required.