Excerpt from A Treatise on Navigation and Nautical Astronomy IN compiling the following Treatise on Navigation and Nautical Astronomy, which the Lords Commissioners of the Admiralty have honoured by accepting as the text-book for use in the Royal Navy, I have endeavoured to combine in one volume information which should be alike useful to beginners and to practical navi gators. The problems dealt with are chiefly those of everyday practice at sea, adapted to the requirements of modern naviga tion, the introduction of swifter vessels rendering it absolutely necessary for the skilful navigator to have at his command every means of determining a ship's position by day and by night. Preceding the practical illustrations of each problem I have placed the theory, which is dealt with in such a way as to be intelligible to those conversant with only Plane and Spherical Trigonometry, without a sound knowledge of which it is im possible to understand the art of Navigation. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.