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TAE Marine. REVIEW ; 43 THE ELEMENTS OF NAVIGATION A short and complete explanation of the stan- dard methods of finding the position of a ship at séa and the course to be steered Designed for the instruction of beginners W. J. HENDERSON, Illustrated. The need of a short, simple, and yet comprehensive book on the art of navigating a ship has led the author to undertake the preparation of the present work. The aim of the book is to instruct the beginner, lead- ing him step by step from the first operations to the perfection of the art as found in the Sumner method. The instructions have been made as terse as possible, and yet the author believes that clearness has not been sacrificed. Fundamental principles have been ex- plained, but no attempt has been made to elucidate the higher mathematics on the subject. Students who have tried to learn navigation from books like Captain Lecky's inimitable "Wrinkles in Practical Naviga- tion", which is addressed to navigators only, or from Bowditch's "American Navigator", which is only for mathematicians, will, it is hoped, appreciate this little book. The explanations of the uses of the tables and the "Nautical Almanac" are a new feature in a work of this kind. CONTENTS Introduction Compass Error by Azimuths Variation Longitude by Chronometer (or Deviation Time) Sight How to find the Deviation Remarks on Longitude Leeway Longitude by Sunrise and Sunset The Log Sights : Mine endl ine Chronometer Sight ofa Star Charts Sumner's Method Chart Sailing Example of Sumner's Method Dead-Reckoning we ee Example of Sumner Lines with Examples for Practice Two Stars Working a Traverse _Great-Circle Sailing Hove to Distance and Danger Angles Shaping the Course Allowance for Tides Navigation by Observation Keeping the Log Sextant Adjustments Rating a Chronometer Index Error Care of a Chronometer Hints on Taking Altitudes . Hints on Conducting Voyages Correcting the Altitude Tho Ohronometer Examples for Practice: The Nautical Almanac Dead-Reckoning Apparent and Mean Time--The Shaping Course by Mercator's Equation Sailing GREAT LAKES REGISTER FOR THE CLASSIFICATION OF STEEL. AND WOODEN VESSELS. 1 Estb. 1896 Estb. 1828 COMBINED AND ISSUED IN COMNECTION WITH BUREAU VERITAS INTERNATIONAL REGISTER OF SHIPPING. THE RATINGS OF GREAT LAKES REGISTER GO BEFORE AND ARE ACCEPTED BY THE LEADING UNDERWRITERS OF AMERICA AND EUROPE. VESSELS BUILT UNDER THE SUPERVISION OF ITS SURVEYORS WILL RECEIVE SPECIAL RATING, AND WILL ALSO BE PUBLISHED IN BUREAU VERITAS INTERNATIONAL REGISTER OF SHIPPING. PLANS AND SPECIFICATIONS FURNISHED. GREAT LAKES REGISTER SURVEYORS ARE ESTAB- LISHED AT ALL THE PRINCIPAL PORTS ON THE GREAT LAKES. : F. D. HERRIMAN, SURVEYOR GENERAL, 820-822 Perry-Payne Building, + - - CLEVELAND, O. CHARLES E. PECK. WILLIAM A. PRIME, CHAS. E. & W.F. PECK, Insurance Brokers. Average Adjusters. ESTABLISHED 1870. NEW YORK, 58 William Street, BOSTON, [53 Milk St. BUFFALO, 914 The Fidelity Bidg. CLEVELAND, 1006-1008 Rockefeller Bldg. CHICAGO, [114-15 Royal Insurance Bldg. REPRESENTED BY Cc. T. BOWRING & CO., (Insurance) LTD., 5 and 6 Billiter Ave., LONDON, and at ""LLOYD'S" LONDON. HULLS and CARGOES. We place insurances in the most advantageous markets, employ- ing, in the interest of ourclients and with equal facility,all Foreign and Home companies, at the best procurable rates and terms. We Represent Only the Assured. Latitude by Meridian Altitude Latitude by Meridian Altitude of a Star Latitude by Meridian Altitude of a Planet Latitude by Meridian Altitude of the Moe eridian Hitu e 0. Meridian Altitude below the Pole Latitude by Ex-Meridian Altitude of the Sun Latitude by the Polestar Latitude by Meridian Altitude of Sun Latitude by Meridian Altitude of Star Latitude by Meridian Altitude Below the Pole Latitude by Ex-Meridian Alti- tudes Latitude by the Polestar Longitude by Chronometer Sight : PRICE $1.00 The Marine Review Cleveland Alphabetical Index of Advertisers on page 49 this issue. The Blue Book: of American Shipping, Marine Directory of the World, $5.00