Overview by week

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 week below. You can also view the NtMs per chart.
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.

Notices to Mariners as is for week 39 - 2020

Search for messages per week

Select messages from a certain week.

Select the notices which you require, general notices are added automatically.