Scan and Go helps with coastal passage planning using live and predicted weather, tides and route timing to find a good departure window. Pick two harbours and enter your average boat speed.
Crew view. This plan is worked out when the page opens, so the weather can change.
We only plan between harbours we’ve checked. Use the exact name from the list, or hard-refresh (Ctrl+F5) if a harbour was recently added.
Route distance and course, best leave time from sea current, and how stars and bar colours are scored (tides, streams, weather, harbour rules).
Your plan
Sea route only — not a course to steer. Labels follow the selected leaving day.
Tidal stream
With youAgainstSlack
Three dates in order. Use the chips or a row to pick a day. Tap Why on a row for weather, tides, and streams. Bar colours show tide bands.
Pick a day
Include the map?
High and low water nearest leave and arrive times, range, and springs/neaps for that day.
Departure tides
Arrival tides
Tide bar colours
Advisory (see HW/LW)Bar: in HW slack windowUse careOutside bar slack / poorStars match the bar colour.
Link and QR for this day’s plan. Forecast refreshes when the link is opened. Open within 6 hours.
Share with crew
Link or QR for this day only — pick another day to change it. Ask crew to open within 6 hours.
This planner is a passage-planning aid only and must not be used for navigation. Weather, sea state, wind and tidal information are forecast guidance and may change. Filters such as maximum gust limits and daylight-only departures may affect the results shown. Always consult official charts, forecasts and local harbour information before setting sail.