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Announcements and important messages

Find announcements and important messages concerning the nautical charts and services section of our website. This includes scheduled maintenance, reported issues with tide and current tables, and changes to how nautical information is communicated.

Infrastructure maintenance – March 16, 2024, 8:00 AM – 4:00 PM (ET) - posted on: 2024-03-12

We will be doing infrastructure maintenance which will affect the CHS Tidal Website on Saturday, March 16th from 8:00 AM to 4:00 PM ET. At that time, you may not have access to the website. We apologize for any inconvenience.

Notice of Table 3 Corrections for Atlantic region 'Canadian Tide and Current Tables' - posted on: 2023-12-08

Please note that Atlantic region has applied several corrections to Higher High Water and Lower Low Water time differences for secondary stations in Table 3.

Notice of name change - posted on: 2023-10-05

Please take note that the names have changed for the following Canadian Hydrographic Service tidal stations from Volume 7 - Queen Charlotte Sound to Dixon Entrance: 1) Queen Charlotte City (9850) is now Daajing Giids, 2) Port Simpson (9390) is now Lax Kw'alaams.

Review of geographical names - posted on: 2023-08-31

The records of the Canadian Hydrographic Service could contain geographical names that may be considered racist, offensive and derogatory. Geographical naming authorities are in the process of addressing many offensive place names, but the work is still ongoing. For more information about inappropriate geographical names, please contact chsinfo@dfo-mpo.gc.ca.

Phase 2 of the discontinuation of digital Raster Navigational Charts (RNC) has been implemented - posted on: 2023-08-31

Following the preliminary notice published in Notices to Mariners (Edition No. 08/2022, August 26, 2022) and following the consultation period, the Canadian Hydrographic Service (CHS) has implemented the second phase of the discontinuation of its digital Raster Navigational Charts (RNC) offered in BSB format. Charts that were cancelled as part of the second phase of this initiative are listed in Notices to Mariners (Edition No. 03/2023, March 31, 2023, notice *311/23).

CHS NON-NAvigational (CHS NONNA) Bathymetric Data Update and Release - posted on: 2022-08-05

Client suggested enhancements have been implemented to the CHS NONNA Data Portal including migration to chart datum and enhanced tools for selecting and downloading large geographic areas.

Phase 1 of the discontinuation of digital Raster Navigational Charts (RNC) has begun - posted on: 2022-04-21

Following the preliminary notice published in Notices to Mariners (Edition No. 06/2021, June 25, 2021) and following the consultation period, the Canadian Hydrographic Service (CHS) has begun the discontinuation, in progressive phases, of its digital Raster Navigational Charts (RNC) offered in BSB format.

CHS Nautical Publications: Free and always up-to-date digital downloads - Printing to be Discontinued - posted on: 2022-01-05

All of the Canadian Hydrographic Service's nautical publications are now available as free digital downloads. Providing free digital nautical publications means easier access to up-to-date information for safer navigation. The Canadian Hydrographic Service will permanently discontinue the printing of all volumes listed below effective March 1st, 2022.

Moving towards Electronic Navigational Charts for safer navigation - posted on: 2021-07-19

To better align with international standards and best practices, the Canadian Hydrographic Service (CHS) will be phasing out Raster Navigational Charts (RNCs) to offer safer Electronic Navigational Charts (ENCs) products and services.

Web services and Rest-API - posted on: 2021-05-04

As of 12:00 pm EDT on Monday, May 3rd, 2021, the old Canadian Hydrographic Service WDS services (observations and predictions) have been decommissioned. Please refer to the web services page for information on using the new REST-API for direct access to official water level data and other available services.

Canadian Tide and Current Tables – Chart 1 – printing to be discontinued - posted on: 2020-09-30

The Canadian Hydrographic Service has just announced printing to be discontinued for the Canadian Tide and Current Tables and Chart #1 in the September monthly edition of the Notices to Mariners referring mariners to the pdf versions available online. This decision is related to the transformation plan being put forward at CHS to better meet digital product needs.

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