Question 1

How do I subscribe on my Windows PC?

Henri · Accepted Answer

At the moment, you cannot subscribe directly from a Windows PC. To get a subscription, please use your phone (or tablet) via the App Store for iOS or macOS, or the Play Store for Android.
This subscription will then be valid on all your devices, including your PC.

Important: On your PC or any device where you did not take your subscription, make sure to login to your NavimetriX account to see your subscription

Question 2

How do I subscribe on my Windows PC?

Henri · Accepted Answer

At the moment, you cannot subscribe directly from a Windows PC. To get a subscription, please use your phone (or tablet) via the App Store for iOS or macOS, or the Play Store for Android.
This subscription will then be valid on all your devices, including your PC.

Important: On your PC or any device where you did not take your subscription, make sure to login to your NavimetriX account to see your subscription

Question 3

What Global Atmospheric Models are available?

Henri · Accepted Answer

ECMWF IFS 0.25° (28 km), 0.4° (44 km), 1° (111 km)
Global model from the European Centre (ECMWF). Often considered the most reliable for medium-range forecasts.
Resolution: from 28 km to 111 km
Forecasts up to 10 days
👉 A key reference for offshore navigation. Prefer the high-resolution version (0.25°) with a good connection, or a lighter version (0.4° or 1°) when bandwidth is limited.

GFS 0.25° (28 km), 0.5° (56 km), 1° (111 km), 2° (222 km)
Global model from NOAA (United States). Available in multiple resolutions: the finer the grid, the heavier but more accurate the file.
Resolution: from 28 km to 222 km
Forecasts up to 16 days
👉 A key reference for offshore sailing. Prefer the fine version (0.25°) with a good connection, or a lighter version (1° or 2°) when bandwidth is limited. Very useful for comparison with the ECMWF IFS before a long passage, especially in the Atlantic or Mediterranean.

ECMWF AIFS 0.25° (28 km), 1° (111 km)
Brand-new model from the European Centre (ECMWF) using artificial intelligence.
Resolution: 28 km or 111 km
Forecasts up to 10 days
👉 Interesting for testing AI model performance and having an alternative to traditional models. Improving day by day — already likely better than ECMWF IFS and GFS for forecasts beyond 7 days.

GDPS (GEM) 0.15° (17 km)
Global model produced by Environment Canada. One of the finest-resolution global models available.
Resolution: 17 km
Forecasts up to 10 days
👉 Relevant for North Atlantic crossings and high-latitude sailing near the Arctic.

ICON Global 0.25° (28 km)
Global model from DWD (German Meteorological Service).
Resolution: 28 km
Forecasts up to 7 days
👉 A solid alternative to GFS and ECMWF IFS, particularly for sailing in Europe and the Mediterranean.

Arpege Global 0.25° (28 km)
Global model from Météo-France.
Resolution: 28 km
Forecasts up to 10 days
👉 Useful for offshore sailing near France, in the Atlantic or Mediterranean, as it is well tuned for these areas.

Question 4

Can you describe the user interface?

Henri · Accepted Answer

The NavimetriX interface has been designed to be clear, intuitive, and quick to use, whether on a computer, tablet, or smartphone. Here is a complete description, section by section:

- Top right

- ⚙ Settings icon: opens the settings panel
- 👤Account icon: allows you to log in to your NavimetriX account, create an account, or reset your password.

- ? Help icon : Open the application's website, in the Frequently Asked Questions or FAQs tab.

- Top left

☰ Hamburger menu: provides access to the application's main lists:

- GRIB files

- Points of Interest (POI)

- Routes

- Routings

- AIS targets

- Bottom left

- Map scale

- GRIB file loaded, for example :
  GFS 0.25° 20251007 00Z +384
  - - GFS model
  - - 0.25° grid, approximately 26 km
  - - published by NOAA on October 7, 2025
  - - Calculated at midnight UTC, we refer to the 0-hour run or 00Z.
  - - containing 384 hours from the 00Z run. If you see +36, this indicates that the first 36 hours of this GRIB file are from the 00Z run, while the following hours are from the previous run, which was the 18Z run on October 6. This gives you access to the latest data from the run without having to wait for the entire run to be calculated. For the GFS, this saves about 3 hours.

- Below: the Timeline

- Displays all hours covered by the currently loaded GRIB file.

- Each white dot on the time bar corresponds to a time step in the GRIB file.

- The time displayed just above indicates the current position of the Timeline.

- If you click/tap on this time, the Timeline will jump to “now” and the seconds will scroll by (letting you know that you are at the current time).

- You can:
  - - Slide the Timeline with your finger or mouse,
  - - Click/tap on a location to move directly to a specific time.

- The data in the GRIB file displayed is then that for the selected time.

- If a routing is displayed, the boat moves at the selected time along its trajectory.

- At the bottom right, the coordinates of the target in the center of the screen are displayed.

- Bottom right: the three orange circular buttons

- Action Button (+)
  - - Download a GRIB file,
  - - Add a POI,
  - - Create a route,
  - - Calculate a routing.

- Boat Button
  - - Centers the map on the boat's position.
  - - Long press : automatically centers and zooms in for a closer view—ideal for navigation.

- Layers button
  - - Chart section :Allows you to choose the type of chart displayed:
      - OpenStreetMap (par défaut)
      - Bing Satellite
      - Nautical charts, if available.
  - - GRIB Display section
      - Allows you to choose which weather parameters to display:
        
        Background color,
        
        Wind barbs,
        
        Additional data depending on the loaded model.
  - - Display Section
      - Allows you to enable or disable the display of :
        
        POI,
        
        Tracks,
        
        Tides,
        
        AIS targets.

- On the map

- Target in the center of the screen.
  - - Orange if at sea
  - - Blue if on the ground
      The target's coordinates are displayed at the bottom right.

- Data from the GRIB file at the target at the time of the time bar

- Tide icons around the world
  - - Red : ebb tide.
  - - Green : rising tide.
      Clicking on an icon opens the tide details with the times and heights calculated directly in the application.

- No-go zones
  - - red polygons
      such as traffic separation schemes or offshore wind farm areas

- Points of Interest (POIs)
  - - in orange

How do I subscribe on my Windows PC?

How do I subscribe on my Windows PC?

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How do I subscribe on my Windows PC?

How do I subscribe on my Windows PC?

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Contact

Politique de confidentialité

Conditions Générales d’utilisation