The present work is an expansion of the Author's "Text-Book of Theoretical Naval Architecture" originally published in 1899. It has been prepared in order to provide students and draughtsmen engaged in Shipbuilders' and Naval Architects' drawing offices with a text-book which should explain the calculations which have continually to be carried out. It is intended also that the work should form a text-book for the various examinations which are held in this subject. The subject of Naval Architecture is continually growing, and it is impossible to deal satisfactorily with it in any one book, but the object of the Author has been to show how all the ordinary ship calculations can be intelligently carried out and to give the student a groundwork of knowledge on which further progress can be based.