952 



HYDRODYNAMICS IN SHIP DESIGN 



Buoyancy, longitudinal center of, usual positions for, 486 



reserve, requirements in design, 546 

 Burrill (L. C.) method to derive thrust and torque for a 



screwprop, 352 

 Buttock, lines, reversed curvature in, 492, 493 



mean, for planing craft, 839, 840 



shapes, for planing craft, 839 



slope and curvature for confined water, 668 

 Butts and laps, shaping and facing of, 740, 741 



Calculated and experimental resist, comparison of, 216 

 Calculating, advance coefficients for a screwprop, 613 

 and predicting, basic concepts for, 1 



ship behavior in confined waters, 389 

 appendage resistance, 288 



for submarines, 295 

 blade and paddlewheel proportions, 641 

 effective and friction power, 354 

 friction drag, for a ship, 126 



resistance, 86 

 overall wetted surface and bulk volume, 106, 322 

 performance of a screw propeller, 592, 613, 629 



miscellaneous propdevs, 332 

 pressure resistance, mathematical methods for, 206 



modern developments in, 210 

 resistance, theoretical, reference material on, 221 



total, of a submarine and surface ship, 313 

 screw-propeller efficiency, expected, 629 

 ship design and performance data, 1 



performance, practical benefits of, 220 

 pressure resistance due to wavemaking, 215 

 resistance, earlj' efforts, 207 

 thrust-load factor for a screwprop design, 613 



of a screw propeller, 345 

 wave resistance, ship forms suitable for, 219 

 wavemaking drag, assumptions and limitations, 212 

 resistance, 215 



components of, 216 

 Camber, deck, diagrams for, 554 

 selection of, 553 

 ratio, in screw-propeller design, 625 

 Canal(s), locks, predicting ship resistance in, 413 



water-surface slopes in, 660 

 Canoes, design of hulls for, 752 

 Cargo carriers, Great Lakes, design notes on, 755 

 vessels with box-shaped holds, design of, 762 

 Cascade effects on hydrofoils, data for, 84 

 Casting fillets, use of for fairing, 742 

 Catamaran hulls, definition and design problems of, 788 

 Cauchy number, definition and use of, 7 

 Cavitation, bibliography, selected, 157-159 

 bulb, check on, 510 

 criteria, for blade-section shaping, 621 



circular-arc blade section camber lines, 623 

 NSP, for 3-bladed screw propellers, 154 

 of W. H. Bowers, 155 

 criterion, factors in, 146 

 data, for bodies of revolution, 151 

 symmetrical hydrofoil, 161 

 typical, for model screw propeller, 153 

 effect and inception, on ships and propellers, 145 



on screw-propeller performance, 152 

 erosion, prediction of, 156 

 hub, and swirl core, prediction of, 155 



Cavitation, inception and effect of, on ships and appen- 

 dages, 145 

 index(es), for three axisymmetrio body heads, 152 

 nomogram for, 150 

 or number, critical, 10, 11 

 relation of to pressure coefficient, 10, 11 

 limits on typical hydrofoil, 150 

 not involved, screwprop design procedure when, 625 

 number(s), definition of, 8, 11 



in salt water, tables of, 147-149 

 nomogram for, 147, 150 

 occurrence of on ships and appendages, 145 

 photographing, on model and ship propellers, 153 

 prediction of, on hydrofoils and propeller blades, 149 

 super-, design comments on propellers for, 631 



propeller performance under, 156 

 without, screwprop blade widths, 625 

 Celerity of trochoidal wave, tabulated data, 165-168 

 Center of buoyancj^, height above baseline, 479 

 usual longitudinal positions of, 486 

 gravity, height above baseline, 479 



position, long'l, for planing craft, 840 

 Center-of-pressure location, calc, for planing craft, 849 

 for hydrofoil, 80 



planing form, 267 

 Center-of-wind-pressure data for typical ships, 285 

 layout for ABC ship, 283 

 location, 284 

 Change of state of water, data on, 921 



trim; see Trim 

 Changes proposed in final ABC ship design, 896 

 Channel(s), calculation and use of hydraulic radius, 409 

 references to flow patterns in, 36, 39 

 restricted, prediction of ship behavior in, 409-415 

 slopes, water-surface, data on, 660 

 steering in offset positions along, 413 

 Chart(s), design, for screw propellers, 584, 596 

 data from, 335 

 propeller-series, comments on, 589 

 listing of, 584-588 

 preliminary design procedure, 592 

 requirements for, 584 

 Chemical constituents of sea water, 924 

 Chine(s), abovewater, design comments on, 560 

 dimensions, for motorboat design, 846 

 elevations, for planing craft, 839 

 placing of in straight-element forms, 763 

 shape, proportions, dimensions, for planing craft, 837 

 Chisel type of screwprop blade trailing edge, 636 

 Chordwise pressure distribution about hydrofoils, 81 



proportions of control-surface sections, 722 

 Circular constant notation, 913 

 Circulation, and lift, spanwise distribution of, 83 

 formulas for calculating, 72 

 theory, application to screwprop design, 609 

 Clearance (s), aperture and tip for propdevs, 537 

 bed, in shallow water, estimate of, 666 

 hull, for paddlewheels, 645 

 propeller-disc and baseplane, 540 

 tip, for motorboats, 859 

 in tunnels, 669 

 Close-coupled rudders, design of, 726 

 Closures for rudder hinge gaps, 726 

 Clubbing of skeg ending at aftfoot, def of, 537 



