Sailing

Start, finish, and gate legs run to the middle of the G–F and F–X lines. Bearings magnetic (var 12.5°E); published distances from the club chart. The forecast is sampled at every mark — the small arrows on the chart show the local wind for the hour you pick above, and the ★ sits on whichever end of the start line that wind favors. Est. times assume a ~20 ft boat (≈5 kn upwind and reaching, slower in light air, tacking through 90° when a leg is dead upwind) starting at the selected hour; each leg’s wind is the forecast at that leg’s own transit time. Hover a buoy for its coordinates.

Harbor Patrol VHF 16/12 · SBYC Race Committee VHF 71 · Forecast by Open-Meteo (models: NOAA NBM · HRRR · GFS, and ECMWF IFS open data, CC BY 4.0) · Live harbor wind from NOAA CO-OPS station 9411340 · Shoreline © OpenStreetMap contributors

Link straight to an hour: add ?t=YYYY-MM-DDTHH:MM to this page’s address (e.g. /sailing/?t=2026-09-02T17:00) and the forecast slider opens there — a bare date lands on 5 PM, race time. Moving the slider keeps the address on the hour you’re looking at, so the link in the bar is always copyable.