X CONTENTS 



CIIAPTKU 50-MArili:MAII("AI, MI'miODS OF CALCULATIXC TIIK PUKSSlIiK KE- 

 SISTANCK OF SHIPS 



60.1 General 200 50.8 Compiirison of Calculated and Experimental 



oO 2 &irly KfTorta to Analyze and Calculate Ship Resistances ._ 2115 



Resistance 207 50.9 Other Features Derived from Analytic Ship- 



50 3 Mo<lern Developments in the Calculation of Wave Relations 217 



Pressure Resistance due to Wavemaking . 210 50.10 Ship Forms Suitable for Wave-Resistance 



50.4 Assumptions and Limitations Inherent in Calculations 210 



Presenf-Day Calculations 212 50.11 N'ocessarj' Improveraenta in Analytical and 



50.5 Formulation of the Velocity-Potential Ex- Mathematical Methods 219 



pression 211 50.12 Practical Benefits of Calculating Ship Per- 



50.6 The Calculation of Wavemaking Resistance . 215 formance 220 



50.7 ComjKinents of the Calculated Wavemaking 50. Ki Hofercncc Material on Theoretical Rcsist- 



Retii.st:incc 2IG anrc Calculations 221 



C'llAl'li;i; .-.1 I'ltol'oiM'lOXS AM) SIIAI'E DATA l-'oR rVPR'Ar> SHU'S 



51.1 

 51.2 

 51.3 



51.4 



General Comments 223 51.5 



Parent Form of the Taylor Standard Series . 223 51.6 

 References to Tabulated Data on Principal 



Dimensions, Proportions, Coefficients, and 51.7 



Performance of Ships 223 51.8 



References to Tabulated Data on Yachts 51.9 



Designed Waterline Shapes and Coefficients 228 

 Reference Data for Drawing Section-.\rea 



Curves 230 



"Standard" Body Plans 231 



Single-Screw Body Plans 234 



Twin-Screw Body Plans 236 



and Small Craft 228 51.10 Multiple-Screw Sterns 236 



CHAPTER 52— ANALYSIS OF FLOW DIAGRAMS AND PREDICTION OF SHIP FLOW 

 P.VTTERNS 



52.1 Scope of Chapter 239 



52.2 Typical Ship- Wave Profiles 239 



52.3 Wave Profiles Alongside Models 241 



52.4 General Rules for Wave Interference Along- 



side a Ship 243 



52.5 Estimate of Bow-W'ave and Stern- W'ave 



Heights and Positions 244 



52.6 Prediction of the Surface- Wave Profile . . 246 



52.7 Typical Lines-of-Flow Diagrams for Ship 



Models 218 



52.8 Analysis of Model Surface-Flow Diagrams . 250 



52.9 Observation and Interpretation of OfT-the- 



Surface Flow Data on Models 254 



52.10 Elstimating the Ship Flow Pattern on the 



Body Plan 255 



52.11 Prediction of the Ship Flow Pattern at the 



Bilges 255 



Probable Flow at a Distance From the Ship 



Surface 256 



Estimating the Change in Flow Pattern for 



Light or Ballast Conditions 256 



Predicting Velocity and Pressure Distribu- 

 tion .\round Ship Forms 257 



Use of Flow Diagrams for Positioning 



Appendages 258 



ICiitimated Flow at Propulsion-Device Posi- 

 tions 258 



Analysis of the Observed Flow at a Screw- 



Propcller Position 259 



Flow Abaft a Screw Propeller 259 



Persistence of Wake Behind a Ship .... 261 

 Bibliography on Wake 262 



CHAPTER 53— QUANTITATH'E DATA ON DYNAMIC LIFT AND PLANING 



53.6 



63.1 

 53.2 



53.3 



53.4 

 53.5 



Relationship to Other Chapters 263 



Principal Quantitative Factors Involved in 



Planing 263 53.7 



Principal Forces and Moments on a Planing 



Craft 264 53.8 



Determination of Dynamic Lift 264 



Typical Pressure Distribution and Magni- 53.9 



tudo on Planing-Craft Bottoms 266 



Wetted length, Wetted Surface, and Fric- 

 tion Resistance 268 



Variation of Total and Residuary Resist- 

 ances with Speed 269 



Selected Bibliography on Planing Surfaces, 

 Dynamic Lift, and Planing Craft .... 269 



Partial Bibliography on Hydrofoil-Sup- 

 ported Cnift 271 



CHAPTER 54— ESTIMATING THE AIR AND WIND RESISTANCE OF SHIPS 



54.1 S<-opoofThlH Chapter; Definitions .... 274 54.3 Flow DiagramH for Upper- Works Configura- 



M.'i IniTfanc of Wind Velocity with Height Above tions 276 



Water Surface 274 54 . 4 General Formulas for the Wind Drag of 



Irregular Ship Hulls and Superstructures . 270 



