Étale : Marées et Courants

This release answers the question you ask before every tidal gate: when to leave. Give a start, an end and your speed, and Étale works out the stream along the whole track to tell you when to go this week. ROUTE • New Route screen, in the Map tab: start, end, waypoints if you need to round a headland, boat speed. Étale ranks the week's departure times and tells you what each one saves. • Through a tidal gate, the right departure can cut the passage by a third. When the time makes almost no difference, the screen says so instead of listing windows you could not tell apart. • Choose the shortest passage, the most favourable stream or the least foul stream, cap the foul stream, or ask for a passage entirely in daylight. • A track that cuts across land is refused before anything is computed, rather than getting an answer that looks normal. • Ports up a river (Rochefort, Bayonne, Étaples…) are accepted: the approach is flagged as unchecked instead of blocking the passage. • "Reverse direction" sails the same track the other way. FAMOUS PASSAGES • Thirteen tidal gates with their track already drawn: Raz de Sein, Fromveur, Chenal du Four, Goulet de Brest, Alderney Race, Raz de Barfleur, the Déroute, the Teignouse, the Morbihan narrows, the Pertuis Breton and d'Antioche, the Gironde, Cap Gris-Nez. • For each one, the next good departure within 48 h at your speed, free. • The tracks show the passage, not the line between the rocks: your chart stays the reference. ALERTS • Save a window or departure search: Étale reruns it and tells you about the next two windows, the evening before at 7 pm or two hours ahead. • Up to eight searches, under Settings → Saved searches. With no server, alerts are renewed when you open the app: once a week is enough. PURCHASE • One purchase unlocks both planning tools, windows and departure times, and the alerts. Still no subscription. • Departure times have their own three free searches, even if you have already used the ones for windows. • A search that cannot give an answer (track over land, outside the zones, passage too long) does not count against the trial. • Tides, currents, forecasts, widget and tide alerts stay free. ALSO • Astronomical calculations ready for 2027 and beyond: one table stopped at the end of 2026.