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This site is an independent hobby project by an inland skipper. More about the project, the depth maps and the option to donate can be found on the Info & FAQ page. Rules of thumb & FAQ →

WhatsApp group

There is a WhatsApp group for questions, feedback and reports about this site and about the Inland ECDIS. It is also the place to share what you have seen of shallows, rules of thumb and bridge clearances.

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Or simply by e-mail

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Do you enjoy using this site? Unfortunately, hosting a website is not free. A contribution helps keep it running.