Overview by chart

To support safe navigation, the Hydrographic Service publishes the most important changes to nautical products. It does so by posting Notices to Mariners (NtMs) in the NtMs-database. You can select the NtMs per chart below. You can also view the NtMs per week.
First read the explanatory notes.

Note: Due to the corona measures, the Notices to Mariners will be published every 2 weeks from week 18/20 until further notice.

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Search for a nautical map in a certain period

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Select a year and month to search for messages starting from a certain week.

Select a year and month to search for messages until a certain week.