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"THE MarRINE. REVIEW 43 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 BY 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 ic Deviation Time) Sight How to find the Deviation Remarks on Longitude Leeway Longitude by Sunrise and Sunset The Log Sights The Lead-Line Chronometer Sight of a Star Charts Sumner's Method Chart Sailing Example of Sumner's Method Dead-Reckoning with the Sun ( ' Hivaiiples tor Practice Example of Sumner Lines with ] 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 Aluibades Hints on Conducting Voyages Correcting the Altitude. i The Chronometer The Nautical Almanac Examples for Practice: Dead-Reckoning THE WELIN QUADRANT. DAVIT Adopted by Several Governments and most of the more Prominent Steam- ship Lines. Two Men Will Swing the Heavi- est Lifeboat Clear in 20 Seconds. A. P. LUNDIN, Manager, 17 Battery Place, Whitehall Building, NEW YORK. ANNOUNCEMENT. WE have about completed an entire new plant consisting of machine shop building, black- smith shop building, store room and office, and two warehouses. Our machine and blacksmith shops have both been fitted throughout; with new and modern 'machinery, and we are now in position to handle all work connected with the lake trade with promptness and despatch. We are also dealers in engineers' supplies, electrical goods, oils, etc. McKINNON IRON WorKs, ASHTABULA, O. Good Jobbing Accounts Desired for | Republic Ls wie "4 Mechanical ae) | ee Goods he Republic Belting and Supply Co. CLEVELAND, OHIO Manatacturere LE ATHER BELTING | 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 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 Ohronometér Sight PRICE $1.00 The Marine Review Cle veland ' Mae VAM UB a a a ae AVERAGE LENGTH OF HOLLOW BARS WIRY IT Ed tea Pray iy SOLID, ae) mel ee gee: ae aa eee eer Te / IRON OR STEEL. CUYAHOGA FALLS. 0. U.S.A. Safety and Coal Economy > are realized by our Hollow Stay Bolts. Steam , from the center of a broken Hollow bolt always gives positive warning, hence SAFETY Air passing into the firebox through the hollow bolt helps combustion, hence ECONOMY Tell-tale holes clog up. Hollow stays "mever." Passage of air always keeps the holes open. Send for free literature. Falls Hollow Staybolt Company Cuyahoga Falls, Ohlo