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.

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.

Printing and distribution of charts unavailable July 21st – August 2nd - posted on: 2021-06-16

Processing, printing and distribution of chart orders by CHS will be unavailable from July 21st to August 2nd inclusively due to general maintenance, COVID-19 restrictions and Civic Holiday. We kindly request that you plan your orders accordingly and send your orders to CHS at the earliest opportunity so they can be fulfilled prior to July 21st. All orders sent to CHS during the shutdown period will be processed in the order they were received once CHS resumes its services on August 3rd. Please send all your orders and questions to The fax will not be monitored.

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.

Notice on Sainte-Anne-De-Bellevue (#16005) and Pointe-Claire (#15330) - posted on: 2020-03-23

Please note that the CHS tides database can no longer manage the data received from Environment and Climate Change Canada (ECCC) for the following stations: Sainte-Anne-De-Bellevue (#16005) and Pointe-Claire (#15330). We are currently building a new system that will support these stations which will be available later this year.

Notice on Holyrood (00925) station 2020 data - posted on: 2020-02-12

An issue was discovered in the calculations for Holyrood (00925) station 2020 data. Corrections have been applied and the WDS has been updated. If you have acquired data from the WDS service for Holyrood (00925) station prior to Tuesday February 11th 2020, please be advised you must re-download the data starting Dec 14th 2019 and onward through 2020.

Notice for users of the WDS tidal prediction data service - posted on: 2019-12-05

Users of the WDS tidal prediction data service: A problem developed with water level prediction data on the WDS service following loading of new 2020 data, which commenced on Nov 10, 2019. If you have acquired data from the WDS service on or prior to Thursday Dec 5th 2019, please be advised you must re-download all tidal predictions starting Dec 14th 2019 and onward through 2020.

Report a problem or mistake on this page
Please select all that apply:
Date modified: