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PREFACE.

In offering this work on Ship-Building to officers of the naval service and to others of my profession, the author has no apology to make for its production. Information on this subject has been sought from every available source, with a view of rendering this work useful for the purposes of elementary instruction as well as to the practical builder. The result of the undertaking is humbly submitted, trusting that it will meet with indulgence for such faults as it may contain.

The First Division has been compiled chiefly from Rankine's Ship-Building, Theoretical and Practical. Credit for articles

taken from other authors is given in foot-notes.

The Second Division is based upon the actual practice of the public and private Ship-Yards of this country; but the treatises on this subject, of Rankine, Scott Russell, Knowles, and Fincham have been freely used and portions incorporated whenever it seemed desirable to do so.

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The Third Division describes the processes of shaping and of putting together the materials of which a United States Vessel of War is composed, and explains the structure, building, and fitting up of a ship in detail, as well as the process of launching and docking her. The articles on Iron Ship-Building are from the standard work on Ship-Building in Iron and Steel, by E. J. Reed, Esq., late Chief Naval Constructor of the English Navy. The articles on Composite Ship-Building are from the Transactions of the Institute of Naval Architects.

The Fourth Division is a Treatise on the Masting and Sparring of United States Vessels of War, by Titus Evans Dodge, Esq., Foreman of Sparmakers, Navy Yard, Brooklyn, N. Y., who invented and constructed the first "round made masts " used in the Naval service of this country, in 1839. These masts are now used in all our Ships of War. To Mr. Dodge the author is indebted for permission to include his treatise in this work. The article on the Masting of Boats is included at the suggestion of Mr. John Southwick, Carpenter, U. S. Navy. It is hoped that it will prove useful to Carpenters in the Navy and to Boat-Builders.

The Fifth Division is a vocabulary of the terms used.

DIVISION FIRST.

NAVAL ARCHITECTURE.

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