U. S. Supt. of Documents.

INTRODUCTORY

417

1926

DEPARTMENT OF COMMERCE,

UNITED STATES COAST AND GEODETIC SURVEY,

Washington, December 15, 1925.

This publication covers the coast of the Gulf of Mexico from Key West to the Rio Grande, including the harbors and adjacent navigable inland passages, and is based mainly upon the work of the United States Coast and Geodetic Survey, including the results of special examinations in 1925.

This volume covers the territory first included in United States Coast Pilot, Part VIII, and later in United States Coast Pilot, Atlantic Coast, Section E. Three editions of the former and one of the latter were published. The first edition of the former was prepared by Lieut. Glennie Tarbox, United States Navy, and John Ross.

The present volume has been prepared by Lieut. William D. Patterson, United States Coast and Geodetic Survey. The compilation was supervised by Lieut. Commander J. H. Hawley, chief, coast pilot section.

Great courtesy has been shown by the United States Engineers, the Lighthouse Service, and local authorities in furnishing information for use in this publication.

The aids to navigation are corrected to December 11, 1925.

Navigators and others are requested to notify the Director, United States Coast and Geodetic Survey, of any errors or omissions that they may find in this publication, or of any additional matter which they think should be inserted for the information of mariners.

E. LESTER JONES, Director.

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NOTE

The courses and bearings given in degrees are true, reading clockwise from 0° at north to 360°, 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, followed, in parentheses, by the metric equivalent expressed in meters and tenths.

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.

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