C-MAP NA-C703 Cape Caution To Portland Canal

The C-MAP NA-C703 Cape Caution To Portland Canal is a high-resolution electronic navigation card designed for serious boaters and commercial mariners operating along the Pacific Northwest coast. This detailed chart covers one of the most challenging and dynamic coastlines in North America, from the exposed waters of Cape Caution, British Columbia, south through the Inside Passage and down to Portland Canal. Whether you're running a fishing charter, transiting with cargo, or cruising these remote waters, this card provides the precision bathymetry and hazard detail essential for safe passage through narrow channels, rocky reefs, and unpredictable currents.

C-MAP's NA-C703 chart card integrates real-time depth data, detailed coastline rendering, and comprehensive waypoint libraries that sync seamlessly with compatible Garmin chartplotters and marine GPS units. The card's vector-based chart format allows for customizable display layers—enabling you to toggle tidal current vectors, hazard overlays, and bottom type information—critical when navigating through areas like Clarence Strait or the complex approaches to Port of Prince Rupert. The lightweight card format (0.1 lbs) ensures compatibility with virtually all modern chartplotter systems, and the cartography is regularly updated to reflect new surveys and chart corrections issued by Canadian and U.S. hydrographic authorities.

Captains operating commercial fishing vessels, lodge-based charter operations, and cruising sailboats rely on the C-MAP NA-C703 because it delivers the granular detail needed for night piloting and heavy weather navigation. Installation is straightforward—simply insert the card into your compatible Garmin unit and verify GPS lock before departing the dock. For boaters with existing C-MAP libraries, this chart integrates without duplication or conflicts, ensuring clean display and faster route planning. Anyone transiting the British Columbia coast or inside passages should consider this card essential backup to paper charts.