S-57 ENC Number: CA271034

CABLES The symbols for submarine and overhead cables do not differentiate between cables conducting electric power, often at high voltages, and other types of utility cables. Mariners are advised to exercise caution when passing under all overhead cables and to avoid anchoring or conducting seabed operations in the vicinity of submarine cables. The clearance of an overhead cable may differ from its charted value due to changes in atmospheric conditions, water levels and other factors. For additional information, consult Notice No. 16 in the Notices to Mariners, Annual Edition and the appropriate volume of CHS Sailing Directions.

AIDS TO NAVIGATION For additional information concerning aids to navigation, consult larger scale charts, the Pacific Coast List of Lights, Buoys and Fog Signals and Radio Aids to Marine Navigation.

Current velocities represent normal maximum rates at springs. 

See Canadian Tide and Current Tables Vol. 5 and 7 for current information.

TIDAL CURRENTS Approximate directions and rates of the tidal currents at the lettered positions are given in the table and are referred to High Water at Bella Bella. The current measurements were taken at a depth of 15 metres. Actual current speed and direction may vary considerably with those given due to the complexity of the tides and local atmospheric disturbances. At other locations, current arrows are used to indicate the approximate directions and rates at flood and ebb tide. In all cases, the directions and rates are for mean tides only.

VESSEL TRAFFIC SERVICES Traffic Services calling-in point with number; arrow indicates direction of vessel movement. For additional information concerning these services, see Radio Aids to Marine Navigation, Part 3.

FIRING PRACTICE AND EXERCISE AREAS Limits of Firing Practice and Exercise Areas. See Notice No. 35 in the Notices to Mariners, Annual Edition.

VOLUNTARY TANKER EXCLUSION ZONE The Pacific States/British Columbia Oil Spill Task Force endorses voluntary measures and minimum distances from shore for certain commercial vessels transiting the West Coast. For additional information, see Sailing Directions, PAC 200.

OIL TANKER MORATORIUM/ VOLUNTARY TANKER EXCLUSION ZONE The Oil Tanker Moratorium Act contains restrictions for certain commercial vessels transiting along the BC coast from the northern tip of Vancouver Island to the Canada/United States border in the north. The Pacific States/British Columbia Oil Spill Task Force endorses voluntary measures and minimum distances from shore for certain commercial vessels transiting the West Coast. For additional information, see Sailing Directions, PAC 200.

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 2022 / Pches et Ocans Canada 2022. Published by the Canadian Hydrographic Service / Publi par le Service hydrographique du Canada. A licence is required from the Canadian Hydrographic Service (www.charts.gc.ca) to reproduce or distribute this work. La reproduction et la distribution de ce produit sont sujettes  lobtention dun permis octroy par le Service hydrographique du Canada (www.charts.gc.ca).