Blog
What's new on board
Saily WR grows one feature at a time. Each article tells one of them: what it changes when you plan a passage, and why.
Wind and current all around the route
Where does the better breeze lie, where does the stream run? The map now shows the wind or the current all around the route, hour by hour.
Read the articleOctober 2026
Gusts and waves along the route
The mean wind sets the route, the gusts the reef and the sea the comfort: routes now show the gusts and the waves they will meet.
How AI weather models work
Three of the models behind a route solve no equation of physics: they learnt the weather from its past. How they work, and how far to trust them.
AIGFS, NOAA's machine-learned forecast
Started from the same weather as GFS but learnt by machine: where AIGFS and GFS part, the doubt lies in the forecast, sixteen days ahead.
September 2026
AICON, a forecast learnt from ICON
A machine-learned model that starts from ICON's own picture of the weather: where AICON and ICON part, the doubt lies in the forecast itself.
ICON-2I, Italy's 2 km model over its seas
From Corsica to the Ionian Sea, from Malta to the head of the Adriatic, ItaliaMeteo's ICON-2I draws the wind of Italy's seas at 2.2 km.
HARMONIE DINI, 2 km from Iceland to the Adriatic
Norway's fjords, Shetland, the Faroes, Iceland and the Gulf of Finland now have a 2 km model of their own: HARMONIE DINI, run by four nations.
RRFS, NOAA's fine model, over American waters
Sea breezes along the American coasts and trade winds squeezed between the Hawaiian Islands: NOAA's RRFS now sees them at 2.5 to 3 km.
August 2026
Saily WR in five languages
Saily WR was born in French, but the sea is everyone's: every page now speaks English, French, German, Spanish and Italian.
ECMWF AIFS, a forecast learnt by machine
Weather models share the same physics, and can be wrong together: ECMWF AIFS, learnt from past weather by machine, gives a second opinion.
A user guide for every page
A route you cannot explain is one you cannot trust: a guide now tells what every page does, where the data come from and where the limits lie.
The Data page: all that a route rests on
Is the forecast fresh, does it reach your arrival, is your passage in a fine model's area? The Data page answers before you trust a route.
Keeping off the shallows
A coastline says where the land is, not where the water runs thin: routes now keep to water as deep as you choose, on GEBCO and EMODnet.
July 2026
Sailing with the current
A knot of current gives or takes a mile every hour: routes now sail in the current of Copernicus SMOC, tide included, or of NOAA's RTOFS.
Keeping off the land, to about ten metres
A coarse coastline closes channels and forgets islets: routes now keep off OpenStreetMap's coastline of the whole world, to about ten metres.
Dark mode, for night watches
A bright screen on a night watch ruins your night vision: the site now follows your device's dark theme, maps included.
Planning a passage from your phone
Passages are planned in the cockpit as much as at the chart table: the routing page now fits a phone, a long press placing the points.
June 2026
Comparing the models, instant by instant
Several routes on a map, but which one is ahead, and where do they part? The models are now ranked, and a time cursor sails them side by side.
A new routing engine, faster and finer
A finer route used to mean a longer wait: a new, faster engine now explores more routes and computes every model at once.
Reading a route at a glance
A line on a map says where to go, not why: wind barbs along the route, the legs under engine and a summary now tell you why.
Forecasts that keep themselves up to date
A route on yesterday's forecast ignores what forecasters have learnt since: every new run is now downloaded on its own, soon after it is published.
May 2026
ICON, the German weather service's model
Another centre's opinion, finer and finer towards Germany's seas: ICON gives three routes, from the whole globe down to 2 km.
AROME, from the French coast to the islands
Global models cannot see what a coast or an island does to the wind: Météo-France's AROME does, at 1.3 km around France and 2.5 km overseas.
The engine in light airs, its hours and its fuel
In a calm, nobody drifts for hours: the route now motors when the wind drops, and tells the hours under engine and the fuel they burn.
ARPEGE, Météo-France's global model
A global model with a zoom on France: ARPEGE, and its finer grid out to the Azores and the Canaries, adds two routes in European waters.
Your boat, as it really sails
A route is only as good as the boat behind it: choose its polar among about 22,400, then tune it to how your boat really sails.
April 2026
ECMWF, the European Centre's forecast
Days ahead, which forecast puts the lows and the fronts in the right place? ECMWF's model, the forecasters' reference, now gives a route of its own.
Several weather models, one route each
No forecast is right every time: ECMWF, ARPEGE, AROME and ICON join GFS, and one computation gives a route per model to compare.
GFS, the forecast that reaches across an ocean
An ocean crossing outlasts most forecasts: NOAA's GFS sees sixteen days ahead, far enough to plan a passage from its first mile to its last.
The first route, drawn by isochrones
Which way gets you there soonest, with the wind to come? Saily WR's first route answered it, drawn by isochrones on the GFS forecast.