Excerpt from A Treatise on Ship Draughting: A Plain Statement of the Process of Delineating the Lines of a Vessel on a Floor Models are so common at the present day that any de scription of them might be deemed unnecessary; but to a person about to make his first one, a few words may not be out of place. Models are always made on a scale, generally from a quarter to a half-inch to the foot, of two different kinds and opposite colors of well seasoned soft wood - as pine and black walnut, or cedar - laid up alternately and keyed or screwed together. The lower or parallel lines are called water lines, the piece that is swept to a curve is called the planksheer height, and the piece at the top is the rail height. One half of the vessel only is made, usually the right half. In plate 1, are the lines of a vessel 100 feet long on the fourth water line, 245 feet wide, and 9 feet deep, on iinch scale to the foot. In amodel the outside planking is deducted from the breadth. To get the depth of model required for a vessel 9 feet deep, write down say 95 inches for depth of floor, 2g say for thickness of ceiling add 9 feet less the crown the beam, say 5 inches. Gives 9 ft. 7 in. For the required depth of model to the plankshear height, if we have no water wavs. In large vessels the water lines are usually two feet apart but for a vessel the size of the one in the first plate. Eighteen inches would be more suitable. The principle or method of drafting can be illustrated as well with four water lines as more, as in the plate; a multiplicity of lines only creates confusion. 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.