2297 - Duck Islands to DeTour Passage Nautical Chart | Canadian Hydrographic Service (CHS)

The 2297 – Duck Islands to DeTour Passage Nautical Chart provides detailed hydrographic coverage of the waters between Duck Islands and DeTour Passage on the northern portion of Lake Huron and the St. Marys River approaches. Produced by the Canadian Hydrographic Service (CHS), this chart is an essential navigation tool for recreational boaters, commercial vessels, and marine professionals.

This official CHS chart displays accurate water depths, bathymetry, seabed composition, shoreline and coastal features, underwater hazards, and aids to navigation. Mariners can rely on this chart for safe route planning, hazard avoidance, and harbour approaches, including shoals, rocks, submerged obstacles, buoys, lighthouses, and other navigational aids.

Whether for recreational boating, commercial shipping, or fishing operations, the chart helps ensure safe passage through one of Lake Huron’s busiest waterways, where precise navigation is critical due to changing water depths and variable currents near the Duck Islands and DeTour Passage.