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Where does the information in the app come from?

For the Dutch nautical maps, we work with waterway info and guidelines from ANWB Almanac. Every year, they send us updated data on waterways, including marinas, bridges and locks. Our Nautical Maps app is the only app allowed to use this information.

In addition, we use public sources like Rijkswaterstaat. We also work with organisations such as Varen Doe Je Samen! and harbour masters.

The maps themselves are based on the water maps of the ANWB (2018). Since then we’ve been keeping them up to date and developing them.

Another very important source for up-to-date information are our users, including you! A lot of people who use our app send us corrections and provide feedback. Our editorial team reviews these messages and includes them in the maps.

More than 60.000 people use our app each year. Having such a large number of users helps keep our app more accurate and up to date than others on the market.

See also: How can I report an error or correction?