New publication of Manuels to Weather4D Routage & Navigation in French version. Warning, it is a new version to download which replaces the previous one (¹). The old guide should be removed from your library in the Apple Books app. Read more …
Category : Tutorials
How to…
Navygatio : Weather4D's 5th dimension [Update]
Navygatio – Web Home Page
Weather4D Routage & Navigation brings a major novelty : The ServiceNavygatio (¹), a web interface which will allow to record the navigations on a server as time goes by, add photos, to share own page with relatives, compare tracks, Analyze performance, and much more to come. A real " Cloud at the unique service of Weather4D Routage & Navigation users with iOS and SailGrib WR with Android. Read more …
You said « Medicane » ?
Many sailors who cross the "Big Blue" have known for ages that, if the navigation is relatively easy, the weather represents a particularly difficult constraint to deal. Indeed, if the coasts are mostly clean and the dangers very localized, if the tides are almost insignificant, if the currents are to be considered only in well defined areas, the major difficulty comes from a capricious meteorology, difficult to forecast, which can represent a real danger by its changing moods, sudden, even rough. Read more …
Introduction to Marine Weather [2021]
Le nouveau tutoriel « Introduction to Marine Weather » est disponible sur l’iBook Store (¹).
A complete reworking of the originally published book in 2015, new, clearer and more readable layout in portrait mode, ful revision of the text, mise à jour des vidéos et illustrations. Read more …
New major evolution of the GFS model
NOAA (¹) annouced on 22 March a major upgrade to its weather forecasting model GFS.
For the first time, the Global Forecasting System (GFS), NOAA's flagship weather forecast model (¹) will be coupled with the global wave model Wave Watch III (WW3), produced by the CMNF (Fleet Numerical Meteorology and Oceanography Center), which will extend the current forecast of waves from 7 down to 16 days and improve the prediction of ocean waves forced by the atmosphere. Read more …
Sea state : interpret wave patterns
In Weather4D, as generally in other applications, sea state forecasts are described by ocean models. The most used is the model WW3 (Wave Watch III), published by FNMOC (Fleet Numerical Meteorology and Oceanography Center) of the US Navy, with a global model due to 7 days and resolution 1° (60NM), and a Europe model to 3 days and resolution 0.2° (12NM). Météo-France publish the models MFAUM (Wave Assimilated Model) coupled with the ARPEGE and AROME weather models with three resolutions : Global at 0.5° (30NM), Europe at 0.1° (6NM), France at 0.025° (1,5NM) with variable deadlines (¹). Read more …
MacENC is back
MacENCx64 is now the name of the MacENC application which has just been published by its new developer NavStation.
MacENC has been completely adapted and recompiled into 64 bits for recent MacOS systems and new processors, which explains the new name. I continue to ensure the French translation. But be careful : to date Navionics cartography is no longer available. So there is no charting yet for the coasts of Europe, except ENC S-57 and S-63 available from Chartworld (see the page Digital charting). Read more …
Routing : from reality to play (episode 3)
While, this morning of the 9th day, Hugo Boss en tête du Vendée globe 2020 finishes crossing the “Doldrums” at a slow trot (¹), suivi par la flotte des concurrents qui s’étale derrière lui jusqu’au nord des îles du Cap Vert, c’est une toute autre partition que jouent les leaders du jeu Virtual Regatta. Read more …
Routing : from game to reality (continue)
Friday 13 November will not be a lucky day for the Vendée Globe skippers 2020 (¹). Ils vont devoir négocier la rencontre avec la tempête tropicale « Theta » qui croise leur parcours avec des vents moyens pouvant atteindre les 40 nœuds et de puissantes rafales. Surtout la mer sera à craindre car, fortement croisées au passage du centre dépressionnaire, les vagues pourront dépasser les 6 mètres et déferler de façon chaotique. Read more …
Routing : from game to reality
On the second day of racing of this Vendée Globe 2020, we can say that the weather conditions that the skippers will experience on the descent towards the Doldrums will be particularly tough. Après un départ par un temps de demoiselle, un premier front froid peu actif passé sans encombre, les solitaires vont traverser un deuxième front beaucoup plus violent dans la nuit et la matinée de mardi à mercredi, pour le groupe parti à l’Ouest, et dans la soirée pour le groupe passé entre le DST (¹) et la Gallice.
Mais ces conditions à venir sont bien différentes pour les joueurs de Virtual Regatta et pour les marins… Read more …