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NEWTON'S GUIDE

TO THE

BOARD OF TRADE EXAMINATIONS

OF

MASTERS AND MATES

OF

SAILING SHIPS AND STEAM SHIPS,

IN

NAVIGATION AND NAUTICAL ASTRONOMY ;

COMPRISING

RULES FOR WORKING EACH PROBLEM, AND EXAMPLES FULLY WORKED.
ALSO THE ASTRONOMICAL DEFINITIONS, EXAMINATION IN CHART AND SEXTANT,

DESCRIPTION AND USE OF NAPIER'S DIAGRAM,

WITH EXAMPLES.

SUMNER'S METHOD OF FINDING A SHIP'S POSITION.

THE NEW CHART QUESTIONS,
WITH REDUCTION OF SOUNDINGS.

BY

JOHN NEWTON, F.R.A.S.,

NAVIGATION SCHOOL, SAILORS' HOME, DOCK STREET, LONDON, E.

SEVENTH EDITION. ENLARGED AND IMPROVED.

(ENTERED AT THE STATIONERS' HALL.)

LONDON:
J. NEWTON, Sailors' Home; C. WILSON (late NOBIE & Wilson), Minories ;

AND ALL NAUTICAL BOOKSELLERS.

1884.

26325.4.3

[blocks in formation]

PRE FACE.

The New Edition of this Guide Book is issued with the

fullest confidence, that (like the former Editions) it will be found acceptable to Candidates about to undergo the Board of

Trade Examinations. It is now well-known at those Exami.

nations the strictest accuracy is required in all the calculations ; it is, therefore, all the more necessary that each candidate should, by continued and extended practice, endeavour to make

himself what is termed an accurate worker.

Having this in view, the author has introduced a large

number of examples of each problem, including the various

styles in which it is likely they may be given by the Examiner.

The Elements from the Nautical Almanac for 1885, and

from the Admiralty Tide Tables for 1884, will be found useful

to candidates who have not those useful publications at hand

when practising while at sea.

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