페이지 이미지
PDF
ePub
[ocr errors][merged small]

Usually the separate subjects covered by the term "navigation and nautical astronomy” are too roughly generalized for one to readily understand, the result being a constantly increasing demand for a special work for the use of those wishing to study navigation with the intention of obtaining a U. S. Local Inspectors license.

The selection and arrangement of the various methods and explanations in detail of keeping track of a ship by “dead reck- . oning" or "account,” including Mercator and middle latitude sailings, and use of logarithms are not written from theory alone, but from actual practice, and several years' experience as a nautical instructor, which makes possible the production of this volume for the beginner.

The matter in this volume is arranged in the proper order for study and should not be deviated from as the nature of the problems in the last part is such that they cannot be managed by those without that knowledge contained in the first part. For that reason it is suggested that the usual custom of beginning study in spots in the advanced portion of a book should not be followed.

Bowditch tables have been used throughout and those are referred to where table numbers are mentioned.

R. M. PUGSLEY.

EXPLANATION

When the compass course is between north and west, it is in the north-west quadrant, the signs indicating that the variation, deviation or compass error, if west, are to be added to the compass course. If east, they are subtractive.

When the compass course is between south and west, it is in the south-west quadrant, the signs indicating that the variation, deviation or compass error, if west, are to be subtracted from the compass course. If east, they are additive.

When the compass course is between south and east, it is in the south-east quadrant, the signs indicating that the variation, deviation or compass error, if west, are to be added to the compass course. If east, they are subtractive.

When the compass course is between north and east, it is in the north-east quadrant, the signs indicating that the variation, deviation or compass error, if west, are to be subtracted from the compass course. If east, they are additive.

The result in any case will be the true course.

[blocks in formation]
[ocr errors]
[ocr errors]

05

06

08

1-4000

1016. IIIIII

Examination Specialties

by
CAPT. R. M. PUGSLEY

FOR SALE BY ALL DEALERS

PUGSLEY'S GUIDE, with complete instructions for those who wish to learn navigation and save the expense of attending school by preparing themselves for the U. S. Local Inspectors Examination of Masters and Mates of Ocean-Going Steam and Sailing Ships. Price, $.200. PUGSLEY'S NEW YORK PILOT and Guide to the U. S. Local

Inspectors examination of masters and pilots for New York Bay and Harbor, with complete sailing directions from Sandy Hook to Yonkers and Great Captain Island. Covers inland

examinations generally. Price, $2.00. PUGSLEY’S TIDES. A special work on computation of times

of tides for applicants for U. S. Local Inspectors licenses. Contains full set of problems covering every known condition

with detailed explanation for each one. Price, $2.00. PUGSLEY'S DEAD RECKONING. A book specially for the

beginner. Contains every step in detail with a great number of problems covering every step in the computation of courses and distances and keeping account of a ship's track. An

examination specialty. Price, $2.00. PUGSLEY’S LOG BOOK for yachts and other small vessels;

also for ship's officers to record their voyages. Every officer

should have one. Price, $1.00. PUGSLEY'S LEARNER'S COMPASS CARD for those who

wish to learn the compass. Printed name at every quarter

point. Price, 50 Cents. PUGSLEY'S SEAMEN'S RECEIPT BOOK. A proper receipt

for money paid for services to a ship by seamen and others. Price, 25 Cents.

Any of the above books sent to any address on receipt of price by

CAPT. R. M. PUGSLEY 17 South Street

New York

« 이전계속 »