Weather & ports

The "Weather & ports" page gives a 3-day wind, wave and swell forecast for any port or any position at sea, in rows every three hours. The last forecast stays on the phone, so you can still read it when the signal is gone. It is a planning aid for mooring, cargo work, maintenance aloft and crew transfer; for navigation use the official forecasts (NAVTEX, SafetyNET, the met office).

Below the forecast, "Ship records (official sites)" links to the public ship databases an inspector or an office uses: "Equasis", "THETIS (EMSA)", "USCG PSIX" and "Tokyo MoU APCIS". SeaReady opens their sites; it does not copy their data.

Everyone, on every plan including Free. The forecast is personal to the phone (it is not part of the ship file), so each officer fetches their own.

1. Open "Weather & ports" from the Tools page while the phone has a connection.
2. Type at least two letters of a port name, country or UN/LOCODE in the search box and tap the port in the list (the list covers the large and medium harbours of the World Port Index; the box tells you how many). The forecast is fetched straight away.
3. Or type a "Latitude" and "Longitude" in decimal degrees (south and west negative) and tap "Forecast". Or tap "My position" to use the phone’s GPS; the phone or browser may ask you to allow location.
4. Read the table for each day (times in UTC): wind in knots with its direction and an arrow, "Gust", the Beaufort force "Bf", "Waves m" with period and direction, "Swell m", "Vis km", pressure in "hPa" and temperature in "°C". Rows with Beaufort 7 or more are shaded red.
5. Check the pill in the heading: "forecast from … ago". It turns amber once the forecast is more than 12 hours old. Fetch a new one whenever you have a connection.
6. Tap a link under "Ship records (official sites)" to open Equasis, THETIS, PSIX or APCIS in the browser.

• Wind and wave directions are where they come from; the arrow points where they go. "No wave data for this point (inland or sheltered water) — wind only." means the point is not covered by the wave model.
• Fetch the forecast for the next port while still alongside this one. At sea the saved forecast runs out after three days and the page tells you: "This saved forecast has run out — get a new one when you have a connection."
• Equasis needs a free account of its own. The other three open without one.

• Fetching a forecast needs internet. Offline the page shows a banner and the last saved forecast; only one forecast (the last one fetched) is kept on the phone.
• Only the position is sent to the SeaReady server, rounded to one tenth of a degree (about 6 nautical miles); no user data goes with it. The server keeps each point’s forecast for 6 hours, so two requests for the same spot within that time give the same rows.
• Model forecast for planning only, provided under the Open-Meteo licence shown on the page. It is not a navigational warning service and it is not the official forecast.
• The ship-record links open other organisations’ sites; what they show, and whether they need a login, is theirs to decide.