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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.

CONTENTS.

Section I. — Ship Calculations.

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

Iminersion — Coefficient — Immersion Passing from Salt to Fresh

Water — Area of Midship Section — Coefficient B- 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 - Approxiinate

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 B-
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
and Lacing Pieces — Rail Half-breadths — Load Line Half-breadths

Diagram of Bilge Diagonals — Diagram of L.W.L. Half-breadths
— Body Plan of “Oceanic”. - Designing the Bossing — Fairing
the Bossing — Fairing the Oxter - Elements of Marine Engines
Engine Room Lengths — The Preparation of Specifications
- Specification Headings — Freeboard — Length — Breadth -

V

Depth of Hold — Coefficient of Fineness — Moulded Depth —
Freeboard — Vessels of Extreme Proportions — Breadth and Depth

- Erections on Deck — Sheer — Round of Beam -- Explanatory
Notes on Application of Freeboard Tables - Additional Freeboard
for Winter North Atlantic for Well-deck Vessels — Rules for
Depth of Loading of Turret-deck Vessels — Rules for Shelter-
deck Vessels -Load Draught Diagrams — Types of Vessels -
Freeboard Marks—Freeboard Tables-Freeboards for Freight-
ers — Freeboards for Spar Deckers — Freeboards for Awning
Deckers -Sailing Vessels — Kirk's Analysis — Analysis Data

Wetted Surface Formula — Launching — Launching Periods
- Launching Curves -- Camber of Ways - Declivity of Ways -
Pressure on Dog Shoes — Length of Ways— Tables of Launch-
ing Data — Calculation of Hull Weights — Ditto by Johnson's
Method — Johnson's Curves — Complete Tables of Weights of
Steel Shapes — The Transport of Cattle — Arrangement of
Stalls and Pens - Dimensions of Stalls and Pens Board
of Agriculture Regulations — Detailed Weights of Cattle Fittings

Rudder Formulæ - Spectacle Frames — Proportions of
Spectacle Frames — Propeller Struts - Simpson's Formula for
Propeller Struts — Proportions of Brackets - Centre of Gravity
by Experiment - Centre of Gravity by Calculation - Strength
of Ships Hogging — Sagging — Curve of Weights — Curve of
Buoyancy — Curve of Loads — Curve of Shearing Stresses -
Curve of Bending Moments — Specimen Calculations for Mo-
ments of Inertia — Diagram of Strength Curves — Resistance
of Ships — The Admiralty Constant — Table of Constants for
various Types — Froude's Investigations — Law of Comparison
– Application of Froude's Law - Speed and Power Curve-
Standard Curves of Power — I. H.P. by Independent Method -
Skin Resistance - - Residuary Resistance Power-Form of Least
Resistance — Middendorf's Method — Table of Angles of Entrance
and Run - Table of Steamers' Data.

Section II. Strength of Materials.
Strength of Materials - Ultimate Strength — Working Load

Proof Strength — Stress and Strain — Tensile Stress — Compres-
sive Stress Shearing Stress — Bending Stress — Torsional Stress

Resilience — Elasticity-Modulus of Elasticity— Permanent Set
- Moment of Inertia Neutral Surface Section Modulus
Moment of Resistance - Radius of Gyration — Various Stresses
and their Factors — Elements of Sections - Beam Bending
Moments - Elements of Circular Sections — Moment of Inertia
of Circular Sections -Strength of Columns – Johnson's Formula
for Columns – Least Radius of Gyration for various Sections

– Values for Johnson's Formula — Pipe Pillars — Standard Pipe
Elements — Steel Columns - Strength of Metals and Alloys
Physical Properties of Timber Strength of Timber — Weight
and Strength of Wire Rope — Notes on the Use of Wire Rope
Strength of Chain Cables - Proof Load for Chains - Strength
of Guard Chains — Weight of Chain Cables - Breaking Strength
of Chains - Elements of Angles — Elements of Bulb Angles —
Elements of Deck Beams — Elements of Tees — Elements of
Z bars - Tees as Struts — Bending Moments of Pins — Strength
of Special Shackles — Riveting U. S. Navy. Standard Rivets -
Lloyd's Riveting Table - Tables of Strength of Riveting
Ordered Lengths of Rivets. — Shearing and Bearing Tables of
Rivets.

Section III. — Fittings and Details.
Structural Details — Keels - Bar Keel Keel Scarphs — Tack
Rivets in Keels - Universal Bar — Flat Plate Keels - Centre
Keelson — Keel Doublings — Stems — Stern Frames - Braces
Gudgeons -- Pintles - Riveting of Boss — Rudder Post - Body
Post — Rudders — Single Plate Rudder - Norman Head — Rud-
der Arms — Coupling Palm — Coupling Bolts — Rudder Stock
Cast Steel Rudder - Balanced Rudders — Heel Bearing Emer-
gency Chains — Types of Rudder Carriers — Rudder Trunks
Tail Plates — Propeller Struts — Area of Propeller Brackets
Boss Barrel — Spectacle Frames -- Bossing around Shafts-
Tube-end Castings — Framing Resistance of Frames — Cut
Frames — Pressed Plate Chocks — Stapled Collars — Frame Doub-
lings — Spirketting Plate — Framing of Superstructure - Reverse
Framės — Floors — Stresses on Floors — Flanged Floors -- Chan-
nel Floors — Water-tight Floors — Floor Brackets — End Floors
- Inner Bottoms Water-tight Compartinents — Centre Vertical
Girder — Side Girders — Margin Plate — Ceiling on Tanks
Bitumastic Cement Manholes Tank Bleeders - Beams
Beam Camber — Welded Beam Knees — Bracket Knees - Stand-
ard Beam Knees — Strong Beams — Carlings — Deck Girders
Beam Collars · Hold Pillars — Built Columns – Pipe Pillars -
Standard Solid Heads and Heels — Fitting of Pillars — Heels on
Inner Bottoms — Staggered Pillars - Hatches — Size of Hatches

Hatch Corner Doublings - Corner Angles — Hatch Fore and
Afters – Bridle Beams Standard Hatch Cleats - Battening
Bar — Hatch Wedges — Hatch Ledges — Hatch Lashing Rings-
Hatch Covers — Lifting Rings Web Frames — Keelsons - In-
tercostal Plates — Side Stringers - Bulkhead Collars — Longitudi-
nals -- Ending of Keelsons — Bulkheads ----Collision Bulkheads
- Bulkhead Liners — Bottom Plaiting Bhd. – Stiffeners - Stresses

on Bulkheads — Deep Framing — Caulking - Chafing Pieces-
Shell Plating — Arrangement of Strakes — Plate Lines — Fairing
the Lines on Model — Shift of Butts - Furnaced Plates - Land-
ings Butts of Plating — Garboard Strake — Sheerstrake — Shell
Riveting — Stealers — Jogging - Scarphs of Overlaps - Liners at
Overlaps — Scarphing of Landing Edges on Stem and Stern Post

- Holes through Shell-Doubling Plates — Hood End Plates
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-
ard Flanges for Ventilation - Standard Hand Wheels (Iron) –
Standard Hand Wheels (Brass) — Hawse Pipe Proportions -
Weights of Hawse Pipes — Hooks — Cargo Hooks — Swivel Hooks
— Trip Hooks — Keys and Keyways Reversible Pad Eye
Lewis Bolt — Accommodation Ladders - Lashing Triangles
Mooring Pipes — Strength of W. I. Pipes— Plug Cock Keys
Standard Pad Eyes — Strength of Rings — Proportions of Rings
- Ordered Lengths of Rivets — Diagrams for Rivets — Ring Plates

- Dimensions of Wood Screws - Areas of Sea Anchors — Detail
of Sea Anchor - Sisterhooks — Slip Shackles — Trade Shackles —
Standard Shackles — Standard Worked Eyes — Towing Bitts –
Steering Chain Springs — Screw Steering Gears — Deck Seats
Weights of sidelights — Proportions of Chain Slips - Boom Mount-
ings — Spider Bands — Torpedo Net Details -Gaff Mountings
Stuffing Boxes and Glands — Thimbles for Wire Rope - Standard
Toggle Pins — Admiralty Turnbuckles — Trolley Block — Uni-
versal Joints — Low Pressure Valves - Heavy Pressure Valves —
Friction Brake for Cranes - Ventilation - Chart for Ventilation
Pipes — Terminals for Exhaust Pipes — Adjustable Terminals
Terminals with Dampers — Standard Sizes of Ventilators and
Cowls -- Weight of Cowls - Elswick Guns — Vickers Guns

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