In coastal navigation, so often within range of a cellular network, you can download GRIB files, weather maps, or simply communicate with friends. But what if your smartphone or tablet is already connected to a multiplexer via Wi-Fi, or an NMEA gateway, without cutting off the data that powers our favorite navigation app ? This is the tip of the summer…
Category : Tutorials
How to…
Nautical documents on electronic media [Update]
(Article original 27 June 2018)
Since the publication of the division D240 replaced, applicable from 6 May 2019 (see my previous article), it is now official that mandatory nautical documents can be taken on board in digital form.
[Update 24/08/2020]
GPS accuracy [summer brief]
I'm always being asked - and have been for ages - how much confidence we can put in the GPS on our tablets and smartphones. Probably at the risk of repeating myself, I persist in asserting that our mobile devices are provided with the most accurate GPS receivers that can be found in civilian use, especially for recreational boating. Read more …
Weather4D Routage & Navigation supports Imray charts
With the delivery yesterday of the version 2.0.54, Weather4D add Imray (¹) to the Routing & Navigation, recently available in Geogarage. Five layers cover the Atlantic facade (²) , from the North Sea and Shetlands to the Canary Islands and the Azores, and one layer covers the Greater and Lesser Antilles.
But the most important are the three layers covering the western, central and eastern Mediterranean, which now provide detailed coverage from the Ionian Sea to the Aegean Sea. An excellent complement to the international SHOM layer. Read more …
Receive facsimile weather maps with an iPad [Update]
An SSB receiver for leasure boating
HF Weather Fax to Black Cat Systems is an application allowing you to decode facsimile weather maps on an iPad, an iPhone or Android device. The analysis and forecast maps are provided by radio stations around the World. Broadcast on shortwave, they can easily be received by BLU receivers as found in boating catalogs.
Read more …
Receive graphic weather maps on iPad [Update-2]
Weather analysis and forecasting maps developed by the NOAA (USA) and the Met Office (UK) cover vast areas over the Wold. They can be obtained sending a request by email to the weather server of british company MailaSail. With the latter, many maps are available in a listing (¹) in which it suffices to click on the links to load the request in a message ready to send.
[Update September 13 th 2025]
Navigation Mac tutorials on your iPad [Update]
A growing number of boaters now uses an iPad at sea. But offshore, when no network connection is available, and therefore no more internet access, how to access the various help or technical instructions concerning the tools used ?
The answer lies in building a library of files in PDF format that can be easily stored in the application Apple Books, for free, very fortunately. Read more …
Geogarage to introduce ENC charts for Weather4D
Geogarage, the mapping platform of raster charts derived from official services, today introduced two ENC-S57 rasterized charts layers for Weather4D Routing & Navigation, covering ’Spain and Croatia. The recent update June, 12 th of the application allows the activation of these two new chart sets. Read more …
The weather models war will take place [Update]
I relayed in December 2018 an excellent issue published on the blog of our friends at Geogarage, who make a permanent duty of a press review of the best foreign articles concerning cartography, meteorology, and more generally all subjects related to maritime navigation. Here is a translation freely adapted and commented on in French. Read more …
Weather4D and SailGrib improve the AIS network
Numerous AIS tracking networks broadcast over the internet are available. Among the best known : Marine Traffic, Vessel Finder, SiiTech, LocateEverything, and many others. One of these networks particularly stands out, AISHub network, an AIS NMEA data sharing center, which offers developers an API allowing the integration of its network into applications, and therefore display of AIS targets received over the Internet directly into the application. Featured from the beginning in Weather4D Routing & Navigation, this system has made it possible to envisage new and particularly innovative services. Read more …