Old SeamanForecast
Route
Departure windows
Wind alerts
Boat profile
About this prototype
Old Seaman puts weather, chart and tide on one time axis. The shading is charted depth plus the tide and wind-driven water level for the hour you pick, compared with your boat's draft and margin. Routes are checked leg by leg at the time you will actually be there. DEMO GO means within the limits you set in Boat for this synthetic scenario only; it is not a navigational recommendation.
Coastline © OpenStreetMap contributors (ODbL). Model names label synthetic scenarios; no ECMWF, GFS or HRRR data is used. Bathymetry, tide, stations and every GO or NO-GO are demo values. Not for navigation.
Location and compass are optional, permission-gated device sensors. Their on/off choices are remembered. Location resumes on return when browser permission is still granted. On iPhone, Compass may need one tap to resume because browser sensor permission requires a user action. Live readings stay in memory unless you explicitly save an Anchor Watch. Sensors pause while hidden; this website cannot monitor location or trigger an anchor alarm after Safari is suspended. Compass shows the screen direction relative to magnetic north (°M); hold the device flat and away from metal. The map arrow shows GPS course over ground, relative to true north, only while moving. Your phone direction is not the boat's heading.
