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92 TAE MARINE. REVIEW General Electric Company Electric Heating Devices for Marine Service * Electric heating devices areas Safeand convenient on ship board as electric lighting. Electric Wash Basin (Open) The electric wash basin is a compact device for obtaining hot water quick= ly and conveniently in the stateroom. No leaky steam or hot water pipes are involved and the complete appa-= ratus folds snugly into a small space. The necessary increase in generating capacity for operating these various devices is best provided by the small Curtis Steam turbine generator set. - Compactness, freedom from _ vibra- tion and minimum operating charges make the Curtis Steam turbine especially suited to marine service, A complete line of compact, durable heating and cooking devices is now available. Theyare attractiveand efficient:and especially adapted to marine service. THE ELEMENTS OF NAVIGATION A short and complete explanation of the stan- dard methods of finding the position of a ship at sea 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 Variation Deviation How to find the Deviation Leeway : The Log The Lead-Line Charts Chart Sailing Dead-Reckoning Examples for Practice Working a Traverse Hove to Shaping the Course Navigation by Observation Sextant Adjustments Index Error Hints on Taking Altitudes Correcting the Altitude The Chronometer The Nautical Almanac Apparent and Mean Time--The _ Equation * Latitude by Meridian Altitude Latitude by Meridian Altitude of a Star Latitude by Meridian Altitude of a Planet Latitude by Meridian Altitude of the Moon Meridian Altitude below the Pole Latitude by Ex-Meridian Altitude of the Sun Latitude by the Polestar Compass Error by Azimuths Longitude by Chronometer (or Time) Sight Remarks on Longitude Longitude by Sunrise and Sunset - Sights Chronometer Sight of a Star Sumner's Method Example of Sumner's Method with the Sun ' Example of Sumner Lines with Two Stars Great-Circle Sailing Distance and Danger Angles Allowance for Tides Keeping the Log Rating a Chronometer Care of a Chronometer Hints on Conducting Voyages Examples for Practice: Dead-Reckoning Shaping Course by Mercator's Sailing 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 New York Office: Principal Office: Sales Offices in 44 Broad St. Schenectady, N. Y. all large cities PRICE $r.00 The Marine Review Cleveland