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12 THE Marine REVIEW 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. FERRALL'S HUB HOISTER AND Sheave for Same. . he sheaves of these hoisters are 'fitted with Star Metaline Bushings and Side Bearings, which keep the sheaves from heating, make them run true and together with the rounded edges of the shells, soon save more than their cost, by pre- serving the rope. BOSTON & LOCKPORT BLOCK CO. BOSTON = MASS. The Warner & Swasey Prism Binocular _ represents the highest stand- ard of optical and mechan- ical construction.and is the most convenient and prac- tical field glass. on the marxet. 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. Send for descriptive literature and a copy ofour booklet " Reflections ofa Rambler."' i i | Ritchie Liquid CONTENTS Compass The Standard Liquid Compass used exclusive- ly by the U.S. Navy for over 35 years. Over 32,000 used in Merchant Service. Made in all sizes and styles, from 2 to 12 inches diameter of card. All compasses made by us have our name printed below the North point or prominently upon the card. None other are genuine. Latest form with four or six needles, the best instru- ment for iron ships. -For sale by ship chandlers and nautical instrument dealers. Catalogue free. E. S. RITCHIE @ SONS, Brookline, Mass., U. S. A. MANUFACTURERS OF NAUTICAL AND PHYSICAL APPARATUS. MARINE MFG. & SUPPLY CO. 157 and 158 South St., New York. SHIP FITTINGS AND SUPPLIES CAPSTANS, WINDLASSES, STEERING APPARATUS, ENGINE © ROOM TELEGRAPHS, BRASS AIR PORTS, DEAD LIGHTS, PUMPS, ETC. Catalogue A--Air Ports, Ventilators, etc. Catalogue B--Windlasses, Pumps, ete, Catalogue C--Steering Apparatus, Others in course of preparation, 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 Altit of the Sun mide 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 & Star Sumner's Method Example of Sumner's Method with the Sun Example ot 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 Oourse 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 Ohronomet Sight ae - PRICE $1.00 The Marine Review Cleveland