Excerpt from Navigation: Illustrated by Diagrams This book is intended for the use of young men of limited mathematical training who hope to qualify as Ensigns in the United States Navy, or for officers in the Naval Reserve, or Merchant Marine. The text is clarified by a far fuller use of diagrams than in other works of similar scope, for the author believes in graphic explanations whenever these are possible. The work is of a practical character and deals with the subject from the modern standpoint, leading up to an understanding of the value of Sumner lines and St. Hilaire's method. The endeavor has been made to use simple language and to avoid mathematical abstractions and exercises that are of little practical value to the navigator. 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 techlogy 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.