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Transport and Communications Agency

Notices to Mariners search service

On this page, you can search for corrections to printed nautical charts and other notices affecting navigation by area, topic, time period or chart. You can also find current preliminary and temporary notices as well as block corrections on this page.

On this page

Notices search service

In the Notices to Mariners search service, chart corrections can be searched by area, product (chart) or by the time of publication. The service includes Notices published since 10.4.2016.

If the chart was published after 1 January 2017, it has a QR code that takes you directly to the correction history of the chart. You can also find the correction history for all charts in the Notices to Mariners compilations.

Temporary (T)- and Preliminary (P) notices 

A separate list is maintained of Temporary- and Preliminary notices in force. The notices are categorized by region, notices covering all Finnish watercourses can be found in the Notices to Mariners search services and in the end of the Notices to Mariners-booklet.

Block corrections

If there are significant changes to the chart information, which are challenging to inform and correct on the printed chart so-called block corrections can be published. The changes are updated with chart images which are printed and aligned on top of the chart and glued or taped on to the printed nautical chart. The corrected charts can be printed via the links below.

Chart folio F page 833

Amended depth information. The depth information in the area between Port of Kokkola and lighthouse Kokkolan majakka has been amended. The area has new, more accurate depth information, which has also been updated outside the fairways. In addition, there are many new individual depth and rock observations. 

The corrections apply to page 833 of the chart folio F and the special maps 833B, Tankar and 833C Ykspihlaja. 

833B Tankar, block correction chart Ulkoinen verkkopalvelu.833C Ykspihlaja, block correction chart Ulkoinen verkkopalvelu.chart page 833, block correction of northern part Ulkoinen verkkopalvelu.chart page 833, block correction of southern part Ulkoinen verkkopalvelu.

Obligation to follow Notices to Mariners

Maritime transport professionals are required to follow the service and constantly update their nautical charts in accordance with the notices. Boaters are required to follow the service and take the notices into account during journeys requiring route planning. Boaters are strongly advised to continuously follow the service and keep their nautical charts up to date. 

The purpose of the service is to publish updates to printed copies of nautical charts and other products and to provide information on matters that are important to navigational safety. Notices to Mariners provide information about changes and arrangements regarding;

  • chart corrections
  • changes in aids to navigation
  • obstructions to navigation
  • nautical publications

More information

More information about the Notices to Mariners service

Notices to Mariners - General information (pdf, 2 Mt)
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