Free US Charts (S-57 electronic format)

NOAA Electronic Navigational Charts®
(NOAA ENCs) are vector data sets that represent NOAA's newest and most powerful electronic charting product. NOAA ENCs conform with the International Hydrographic Office (IHO) S-57 international exchange format, comply with the IHO ENC Product Specification, and are provided with incremental updates that supply Notice to Mariners corrections and other critical changes. NOAA ENCs and updates are available for free download. NOAA ENC data may be used to fuel Electronic Chart and Display Information Systems (ECS).

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Canadian Charts (S-57 electronic format)

Although CHS (Canadian Hydrographic Service)  does not sell S-57 charts directly to the public, it does distribute them to over 800 dealers across Canada and around the world. You can use the "read more" below to find the chart you need and the dealer nearest you. You can also register your digital chart to ensure you receive the latest updates.

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C-Map CM93/3 Electronic Charts

C-Map's (Jeppesen Marine)
primary goal is to provide navigators around the world with all nautical information necessary for safe navigation, and its strategy is based on co-operation with national Hydrographic Offices and the support of ECS and ECS manufacturers and end users. read more