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The courses and bearings given in degrees are true, reading clockwise from 0° at north to 359°, and are followed by the corresponding magnetic course in points, in parentheses. General directions, such as northeastward, west-southwestward, etc., are magnetic.
Distances are in nautical miles and may be converted approximately to statute miles by adding 15 per cent to the distances given.
Currents are expressed in knots, which are nautical miles per hour. Except where otherwise stated, all depths are at mean low water.
In accordance with the desire of the International Hydrographic Conference, each depth is followed, in parentheses, by its equivalent in meters.
Heights are given in feet with metric equivalent in parentheses.
Changes and other corrections affecting all Coast Pilot volumes are included in the Notice to Mariners published weekly by the United States Department of Commerce. About one year after a Coast Pilot is published, and at approximately yearly intervals thereafter until a new edition is brought out, a supplement, giving the more important corrections and additions to its text since the date of its publication, is issued. The date of the latest supplement to each Coast Pilot, for which a supplement has been issued, is shown in the list of Coast Pilots published each week in the Notice to Mariners. Any supplement may be obtained, free of charge, upon application to the Coast and Geodetic Survey, Washington, D. C. or any of its field stations. Each supplement is complete in itself and cancels all previous supplements.
Do not use this Coast Pilot except with reference to the latest supplement that may have been published and Notices to Mariners issued after the date of the supplement.