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roductory.... Index map

U, S, Supt. of Documenta.

e map of ch.


The courses and bearings given in degrecs are true, roading clockwise from 0° at north to 360°, and are followed by the equivalent magnetic value 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 lower low water.

Supplements and other corrections for this volume are issued from time to time and will be furnished, free of charge, on application to the Coast and Geodetic Survey, Washington, D. c., provided the volume itself has not been superseded by a subsequent edition.

eral informa Radio servi Procedure i ai....... Vortheast Hilo Bay. Southeast West coast si..... shoolawe... 21 blokai... shu..

Honolulu Lauai..... vihau.. Giboa or Mo nost Shoal. lecker Isla trench Frig Brooks Sho Gardner Is Two Broth Dowsett R. Maro Reef Laysan Is

Lisiansky Pearl and


Midway Ocean C Johnstor Schjetm Krusens


Na Ha R

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