MainPage Filter ports… Free search: any city (online)… Find City not found (offline and not in local dataset). Found %1 (via %2) Searching… local dataset searched city Ports DetailPage lat %1° 📍 Nearest port: %1 — %2 · ±%3 m 24 h 48 h 72 h Constants of the port of %1 (distance %2°) Estimated constants from lat/lon (synthetic model) Z₀ %1 m · 7 harmonic constituents Next high and low tides High Low Moon Sunrise / sunset Typical range age %1 d (solar time) New moon Waxing crescent First quarter Waxing gibbous Full moon Waning gibbous Last quarter Waning crescent Set as preferred port Settings SettingsPage Language System Language changes on restart Units metres feet Default range Preferred port None About Universal tide predictions Harmonic model: M2, S2, N2, K1, O1, P1, K2 — known ports or synthetic estimate from lat/lon. Not for navigation. CoverPage No port selected