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THE

A CONVENIENT REFERENCE BOOK

FOR

Navigators, Yachtsmen, and Seamen of all classes, and
for all persons interested in the Navy, the
Merchant Marine, and Nautical

Matters generally

BY

INTERNATIONAL CORRESPONDENCE SCHOOLS

SCRANTON, PA.

2d Edition, 21 st Thousand, 5th Impression

SCRANTON, PA.
INTERNATIONAL TEXTBOOK COMPANY

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COPYRIGHT, 1906, 1911, BY INTERNATIONAL TEXTBOOK COMPANY ENTERED AT STATIONERS' Hall, LONDON

ALL RIGHTS RESERVED

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This handbook is intended as a book of reference for the young men in the merchant marine, as well as for those in the naval service. While the treatment of some of the subjects included is necessarily brief, the information given should nevertheless prove useful and create a desire for further study and investigation.

Ambitious seamen trying to fit themselves for examination to higher rank in either service are often embarrassed by insufficient knowledge of logarithms; hence, we have incorporated a thorough and comprehensive article on that subject accompanied by tables of common logarithms.

In the subject of navigation, terrestrial and celestial, are included only the standard methods practiced by the up-to-date navigator, and for This reason the book should be of value to the student, as well as to the navigating officer. The treatment of these subjects does not consist merely of definitions of terms, but rules, formulas, and directions are given for each method, followed in every case by examples and carefully worked-out solutions illustrating the process or method explained. All problems appearing throughout the book involving elements of time are worked out for values given in the Nautical Almanac of 1904.

It is hoped that the information given about the United States Navy, the British Royal Navy, and other naval matters will prove valuable and instructive, not only to men directly connected with these navies, but also to the great majority of merchant sailors and laymen who know but little of the system and organization governing a modern navy. The many opportunities for

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advancement that the naval service offers, and which are mentioned in sections dealing with enlistment and pay, should be of particular interest to ambitious young men casting about for permanent and profitable employment.

In this handbook are incorporated the latest international rules for preventing collisions at sea, as well as regulations governing the issuance of licenses to officers of merchant ships.

This handbook was prepared under the supervision of E. K. Roden, Principal of our School of Navigation.

INTERNATIONAL CORRESPONDENCE Schools July, 1911

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A

Account, Log book, 104.
Accountant general of the

British navy, 179.
Active list, British navy, 185.
Addition of decimals, 15.

of fractions, 13.
Administration of British

navy, 177.
Administrative bureaus, U.

S. navy, 153.
Admiralty departments,

177.
Lord Commissioners of,

177.
Agonic lines, 70.
Aim, Continuous, 242.
Air flask of torpedo, 247.
Alphabet, Semaphore, 310.
Altitude, Circles of, 124.

Ex-meridian, 136.
Observed, 124.
Parallax in, 126.

True, 124.
Altitudes, Corrections of, 131.

equal, Near noon, 141.
American torpedoes, Data

relating to, 257.
Ammunition, Fixed, 220.

supply, 246.
Amplitude, Compass, 125.

True, 125.
Anchor lights, 332.
Anchors, Floating, 351.
Aneroid barometer, Weather

indications by, 364.
Angle, Cosecant of an, 65.

Cosine of, 64.
Cotangent of an, 64.
Horizontal danger, 119.
Hour, 125.
Secant of an, 65.
Sine of an, 64.
Spherical, 95.
Tangent of, 64.

Angle, Vertical danger, 119.
Angles and arcs, 2.

Danger, 118.
Angular distance, 122.
Annual parallax, 126.
Apparent solar day, 129.
Arc, Complement of, 64.

Supplement of, 64.
Arcs and angles, 2.
Aries, First point of, 122.
Armor, Compound, 273.

Harvey and Krupp, 273.
-piercing shells, 237.

shelf, 273.
Armored cruisers, 206.
Arrangement of code book,

304.
Artificers, British navy,

188.
Artificial magnets, 68.
Ascension, Right, 125.
Asteroids, 127.
Astronomical day, 138.
Attraction and repulsion,

Magnetic, 69.
Local, 72.
Automatic guns, 220.
Autumnal equinox, 122.
Auxiliaries, Fieet, 216.
Avoirdupois weight, 2.
Axis, Magnetic, 69.

of the earth, 95.
Azimuth, Compass, 125.
True, 124.

B
Bar, Flinders, 75.

keel, 262.
Barge, 217.
Barometer, aneroid, Weather

indications by, 364.
mercurial, Weather indi-

cations by, 364.
Base fuses, 240.
Battle-ship data, Compari-

son of, 203.

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