PREFACE TO THIRD EDITION. THE preceding editions of this handbook were received so favorably that it was decided to enlarge the third edition by the addition of further "unified" details such as made the earlier editions noteworthy. There has also been included much new matter dealing with ventilation and other subjects, while other portions of the book have been revised and brought up-to-date. It is hoped that in its enlarged form "The Naval Constructor" will continue to occupy its present position as a daily book of reference for those engaged in the design, construction and maintenance of ships. GEORGE SIMPSON. 17 Battery Place, NEW YORK CITY, 1ST MAY, 1914. iv CONTENTS. Symbols Algebraical Signs - Displacement - Simpson's First Rule - Multipliers for Subdivided Intervals - Proof of Simp- son's Rule Displacement Sections- Bottom Half-breadth - Dis- placement Table Area of Water Plane-Tons per Inch Immersion Coefficient - Immersion Passing from Salt to Fresh Water- Area of Midship Section Coefficient ẞ- Prismatic Coefficient-Centre of Buoyancy - Approximate Rule for Cen- tre of Buoyancy-Centre of Buoyancy Longitudinally - Trans- verse Metacentre-B. M. - Moment of Inertia of Water Plane - Longitudinal Metacentre Centre of Flotation Approximate Rule for L.B.M. - Moment to Change Trim - Change of Trim Moment to Alter Trim One Inch - Approximate Rule for M. Alteration in Trim through shipping a small weight - Tchiby- scheff's Sections for "Lucania" — Displacement Sheet by Tchiby- scheff's Rule-Centre of Buoyancy by Tchibyscheff's Rule- L.M.C. and Centre of Flotation by Tchibyscheff's Rule-Trans- verse Metacentres by Tchibyscheff's Rule-Effect of Form of Water Line on Position of Longitudinal Metacentre-Effect of Form of Water Line on Position of Transverse Metacentres - Ex- planation of Tables on Position of Metacentres - Stability Calcu- lation by Tchibyscheff's Rule -Tchibyscheff's Sections for Sta- bility Levers-Calculation of G.Z. by Tchibyscheff's Rule Cross Curves of Stability-Stability Curves - Design-Block Coefficient Relation Coefficient e— - Mid Area Coefficient ß- Prismatic Coefficient Area of L.W.L. Coefficient a Inertia Coefficient "i"-Centre of Gravity Coefficient "g"- Bilge Diagonal Coefficient - Element Coefficient - Relation of the Co- efficients to one another-Element Coefficients for various Types Coefficients for Centre of Gravity - Moment of Inertia of Waterline Coefficient - Sheer - Contour of Stern- Figureheads Diagram of Bilge Diagonals — Diagram of L.W.L. Half-breadths - Depth of Hold - Coefficient of Fineness Moulded Depth - Strength of Materials — Ultimate Strength - Working Load - Values for Johnson's Formula - Pipe Pillars-Standard Pipe - Section III. - Fittings and Details. - Braces Body Structural Details - Keels- Bar Keel - Keel Scarphs - Tack - - - on Bulkheads-Deep Framing - Caulking - Chafing Pieces. Doublings at Breaks - Fitting Details - The Preparation of De- tails Standardizing Details - Bill of Material - Standard Hatch- ing-Graphic Division of One Inch - Baldt Anchors - Ingle- field Anchors - Hall Anchors - Admiral Anchors - Anchor Cranes Formulas for Bevel and Mitre Gear Blanks-Naval Anchor Crane-Stress on Auchor Cranes - Dimensions of An- chor Cranes - Ship's Bells - Weight of Bells - Belay Pins - Balanced Armor Hatch - Standard Bollards - Weights of Bol- lards Wire Rope Snatch Blocks - Diamond Rope Blocks - 25- Ton Block-Standard Iron Blocks-U.S. Standard Bolts and Nuts Chain Plates - Cast Steel Cleats - Catting Hooks - Crane Hooks-Navy Boat Crane - Boat-handling Arrangement - Rotating Davit-Mallory Davit-Swan-neck Davit-Mine Davit - Board of Trade Rules for Round Davits-Davit Heads Weights of Boats and Davit Diameters - Standard Hinged W. T. Doors - Standard Sliding W. T. Doors — Details of W. T. Doors - Standard Eyebolts - Standard Fairleads Weight of Fair- leads - Flanges for Lead Pipes - Standard Pipe Flanges - Stand- - |