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Weather4D and SailGrib improve the AIS network

Many AIS tracking networks broadcast over the Internet are available. Among the best known : Marine Traffic, Vessel Finder, SiiTech, LocalizaTodo, and many others. One of these networks especially stands out, AIS Hub, an AIS NMEA data sharing center, which provides developers with an API for integration of its network in 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.

Public sharing of AIS data

The two leaders of weather, routing and navigation apps, SailGrib Android and Weather4D iOS, have partnered to provide this service to boaters using mobile devices. Thanks to a new server built as an AISHub network station , users of both applications can transmit via an Internet connection, not only their own location, but also those of all the received targets surrounding them, thus multiplying the number of targets in public broadcast by the AISHub network. In addition, this sharing can be achieved in direct satellite connection with an Iridium GO! while GRIB file request in the open sea (¹).

The AISHub server station 2345, administered by APP4NAV, can broadcast all AIS targets received by SailGrib and Weather4D users

Like this, wherever users are located, if they leave their AIS receivers and AIS sharing enabled in their application, even in harbour or at anchor, AIS targets they receive will be broadcast over the network, helping to improve the coverage of regions lacking land-based station.

All targets received with SailGrib by the ship (In the center) are broadcasted on AISHub network

Navigational data sharing

In addition to AIS sharing, applications can share their navigation data. The ship's atmospheric data in real time : speed and wind direction, pressure, air temperature, and hydrological data : current speed and direction, sea ​​temperature, depending on the instruments connected to the application.

If all boaters provided with SailGrib or Weather4D enable their data sharing along their cruise, this will create an interesting grid for comparing the actual data recorded with weather and oceanic forecasts. We can even consider adding instant calculation of wave height and period, using the internal sensors, for example the accelerometer 3 axes combined with atmospheric pressure sensor in iPad.

Thus pleasure boats become, actually, Weather Stations sending instant data collected from their respective positions. This may interest, furthermore boaters themselves, rallies organizers, boat owners associations, clubs, and even, why not, Weather Services.

Sending position and data shared during a Weather4D access to servers for downloading GRIB with Iridium GO!

Private sharing on a dedicated “Cloud” .

From the record of course data, track, weather and hydro, a dedicated website is being developed so that boaters can collect their data in private accounts, formatted with specific pages (tracks graphic, logbook, pictures, texts, etc.) they can share with their loved ones safely.

At a time when social networks have become the communication standard, SailGrib and Weather4D join forces to create a true nautical network to serve their users, through voluntary sharing of their data - sharing which remains entirely optional - while increasing overall security. An initiative that should be welcomed.

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(¹) Available in all versions Weather4D, soon in SailGrib.
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Author : Francis

Since 2009 independent IT trainer and consultant for boating. Translator of many navigation applications on iOS and MacOS. Professional in boating for over 25 years, I provide training for applications and consulting and assistance for the integration of mobile devices (tablets, smartphones) on pleasure boats.

7 comments

  1. Hello,
    there a few years ago I asked you if a transmitter was broadcasting Ais positions it received in addition to his. You answered me
    it was impossible because of too many data.
    That is done, and it is effective…

    • It is indeed always the case for the AIS transponder using wavelengths VHF, while applications use the cellular network, enabling large volumes of data.

  2. Hello Francis,
    I enjoy, I am 4 months a year on the water and I am, I confess I do not understand everything but!!!!
    So I think this winter I'll come train me home, to enjoy some better material I have on board.
    Continue this is great.

  3. Hello Francis
    I am a huge fan of W4D for weather, but I have reservations for navigation. I am currently on L'ile De Povidencia between Cuba and Panama, and outside of ocean navigation that does not demand too much detail for cards, of that one approaches the coast, must switch to iNavX and navionics cards if you want accuracy to land.
    The UKHO and SHOM map (French out areas) are of great inaccuracy.
    Is there sth scheduled to access accurate maps worldwide ?
    For it is really the only thing wrong with W4D, but it is essential when one travels the oceans.

    • Actually, to date some areas are not covered in detail. This is the case of the eastern basin of the Mediterranean, some areas of Central America, Chile, and others. With more than 2000 international cards, SHOM and UKHO cover most areas frequented by boating. We can add the cards hydro services in Brazil, Argentina, Venezuela, Bahamas… Concerning the Mediterranean, busy, Geogarage is being adapted ENC S57 cards to Weather4D (Spain and Croatia coverage in the next version of W4D). But it remains uncovered exotic areas, fortunately attended by a minority of boaters.
      Thus, Considering the low price applications on our mobile devices, it is reasonable to double the coverage with Navionics (Navionics Boating ou iNavX) that complete with details about correct world. Moreover, the recent integration of the database Navionics Boating ActiveCaptain gives an interesting role Nautical Guide.
      For technical and commercial reasons, it is not intended to bear the Navionics charts in Weather4D.

  4. Hello,
    Very pleased overall 4D Weather, I have a little question:
    I am sailing in the Aegean. I am currently near Leros.
    AIS targets do not appear on the screen is 26 ° East.
    By cons they are detected by the alarm.
    No problem to see the west of the meridian.
    Can you help me ?
    Cordially
    Regis Doucet

    Weather4D sur iPad Air