We've been talking about it since 2020 in the Facebook group of Weather4D users, the messaging app Weather4D Routage & Navigation (¹) now works on Mac with ARM processors : Mac M1 and later, from the system macOS 11.x (“Big Sur” et seq.). Simply connect the Mac to a GPS receiver or NMEA gateway via Wi-Fi to receive the position and navigation data of the instruments. Read more …
Category : Tutorials
How to…
SHOM removes facsimiles from UK charts
With the latest update of the SHOM the 16 th 2021, Geogarage announces the removal of 18 facsimile charts from British charts covering, mostly, the south coast of England and Gibraltar. These areas are now only covered by the British Admiralty portfolio (UKHO).
Indeed, SHOM recently announced (¹) the rationalization of its catalog of nautical charts, onwards September 2021, by the deletion of many foreign charts reproduced under historical reciprocity agreements with some foreign hydrographic services. Read more …
Are GRIB files systematically optimistic ?
I've been asked this question regularly, but until now I've never wanted to give my opinion on the subject publicly, so as not to offend anyone or create unnecessary controversy.. But after doing so many of my training courses, why not express it to me openly ?
My opinion, forged by observation and a long professional experience in pleasure boating (¹), is that this assertion of the systematic optimism of GRIB forecasts regarding wind strength, which unfortunately persists, no longer has any reason to exist, and has not been verified in practice for some time. Read more …
Weather4D Routing User Guide
New publication of Manuels to Weather4D Routage 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 …
Weather4D Lite User Manual
New publication of Manuels to Weather4D Lite 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 …
Bad weather for iNavX [Update]
What I've been planning for a while has finally happened. : iNavX lost Navionics mapping ! It seemed obvious that the historic contract which allowed iNavX to have privileged access to Navionics cartography, since the origin of the application designed by Richard Ray in 2009, was threatened. Since then things have changed a lot : repurchase of the application by NavX Studio (¹), acquisition of Navionics by Garmin (²), generalization of the annual chart subscription policy (³)… Read more …
Alternative weather models [Update]
[Updated 29 July 2022]
For several years, forecast files in GRIB format have been widely used in meteorological applications.. The majority of forecast models have been made freely available by meteorological services, all countries included. Apps like XyGrib, LuckGrib, SailGrib, Weather4D and others, offer a selection of atmospheric and oceanic models, up to 60 Weather Models, Waves and currents for Weather4D, more than thirty models with LuckGrib, in example. But there are always others that can usefully complement the standard offerings of these applications. Read more …
Predict storms with Weather4D
In Weather4D (all versions) most weather models provide a data called CAPE.
Convective Available Potential Energy, in French : Energie potentielle de convection disponible. Behind this obscure acronym hides a powerful storm forecasting tool. CAPE is measured in Joules per kilogram of air (J/Kg) and defines the vertical buoyancy energy of a hot air particle in a colder atmosphere. In other words, vertical acceleration of the air particle will be directly related to this energy measurement. Read more …
The Logbook in Weather4D Routing & Navigation
With update 2.0.57 Entering a logbook is now available in Weather4D Routing & Navigation. Data transfer to web interface Navygatio (¹) allows logbook entries to be recorded in near-real or delayed time depending on whether or not there is an internet connection during navigation. Read more …
Weather4D and iOS LAN
From iOS/iPadOS 14.5, A new setting has appeared proposing to allow applications to access the Local area network. This option is offered when installing a new application, but is not necessarily activated if the application is already installed when the OS is updated.
Since then, Many of you are no longer able to connect certain applications (Weather4D, iNavX, aso.) Wi-Fi-connected devices : Iridium GO!®, Multiplexers, Miscellaneous NMEA gateways. To do this, you must activate this "Local network" option for the application concerned. Read more …