S57 ENC CA576686 CHART 5064 - PORT BURWELL The information shown outside of the corridor survey area is of a reconnaissance nature. Mariners are warned to exercise due caution when navigating in these waters. BATHYMETRIC CONTOURS The presentation of non-standard bathymetric contours in the Port Burwell inset is the result of a direct mathematical conversion from foot and/or fathom contours to metres. 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 2011. 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.