CA373281 - Cape Hurd to/à Lonely Island Canadian Hydrographic Service Central and Arctic Region AIDS TO NAVIGATION Buoys marking a narrow or dredged channel are normally established on the edge of the channel. Light structures established to mark the main channel may be located in shoal water some distance back of the channel edge. INDEX See Notices to Mariners for subsequent corrections on this chart and Notices to Shipping in force for hazards or changes essential for the safety of navigation. © Fisheries and Oceans Canada 2021. Published by the Canadian Hydrographic Service. A licence is required from the Canadian Hydrographic Service (www.charts.gc.ca) to reproduce or distribute this work.