System maintenance
System maintenance is planned on Wednesday, April 22, 2026 between 8:30 PM and 11:00 PM (EST). During this time, you may not have access to the following web maps: CHS Tides station map, CHS Surface Current map, CHS Chart Index, or CHS Nautical Charts – Find A Dealer. The IWLS REST-API, tides station table, and tide station pages will still be available. We apologize for the inconvenience.
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Services and information
Nautical charts
Purchase charts for navigational use or download sample charts in a variety of formats.
Nautical publications
We offer a wide range of nautical publications that are indispensable companions to charts, enhancing safety at sea.
Digital transformation
Major investments in advanced technologies and standards to ease a new era of marine navigation with digital products.
Copyright and licensing
Licensing options, royalty rates, and authorized manufacturers for charts, data and publications for non-navigational use.
Arctic charting
Access the Arctic Voyage Planning Guide and other information about charting the Canadian Arctic.
Hydrography
The science of charting our waters, from data acquisition to data processing and management techniques.
Help and information
Information about the Canadian Hydrographic Service, frequently asked questions, and contact information.
Features
CHS Digital Transformation Initiative
At the Canadian Hydrographic Service, innovation is a guiding principle for the bold digital transformation initiative now underway.
2026 Tide Tables Available Now
Download your 2026 Canadian Tide and Current Tables now to help navigate safely through Canadian waters.
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