Canadian Hydrographic Service Central and Arctic Region CA273298 - Barrow Strait and Wellington Channel CAUTION Magnetic Variation: The Magnetic Compass is useless in this area. CAUTION Some of the information shown on this chart is of reconnaissance nature and mariners should exercise caution when navigating in these waters. ICE ACTION Mariners approaching beaching areas ahould bear in mind that the composition and contour of the bottom may be altered from year to year because of ice action. © Fisheries and Oceans Canada 2015. 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.