Excerpt from The Resistance and the Proportions of Screw PropellersAbout four years ago the writer published a treatise on the Power and Speed of Steam Vessels, showing the method adopted for calculating the indicated horse power required for propelling vessels of different types at any desired speed, by means of Tables and Rules he had, some years previously, prepared for his own use.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.