950 



HYDRODYNAMICS IN SHIP DESIGN 



Assumptions, general, for added-mass calculations, 417 

 propelling raachinerj', 443 



in calculation of wavemaking drag, 212 

 Astern maneuvering, rudders for, 735 

 Asymmetric body, distribution of vel and press around, 43 

 formed by sources and sinks, 46 



propulsion, notes on, 651 

 Asynmietric hull forms, design notes for, 787 

 ATTC 1947 friction-resistance formulas, 102 



meanline, 104 

 Attitude, changes of, for fat forms, 329 



planing forms, variation with speed, 329 



running and ship motion diagrams, 325 

 of planing craft, 850 



predicted, of planing craft, 851 

 Augment of resistance ; see Thrust deduction 

 Automatic flap-type rudders and planes, 735 

 Auxiliary propulsion for sailing yachts, 652 

 "Awash" condition of a submarine, occurrence of, 812 

 Axial-component wake-fraction diagrams, 358 



velocity components in screwprop outflow jet, 260 

 Axis, stock, positioning rel to control-surf blade, 720 

 Axisymmetric bodies formed by sources and sinks, 42 



Back flow around ships in canal locks, 414 

 Backing power from self-propelled model tests, 388 

 Baker (G. S.) model 56C, lines and resistance data, 234 

 Balance, buoyancy and weight, first longitudinal, 497, 498 

 Balance, degree of, in control-surface design, 720 



portion of rudder, pressure field of, 711 



ratio, area-, of control surface, 721 

 length-, of control surface, 721 



weight, longitudinal, for light draft, 500 

 Balanced rudders, design notes for, 720 

 Ballast condition, estimated lines of flow in, 256 



ratio for saUing yachts, definition of, 786 

 Barnaby (K. C.) powering coeflacient for small craft, 833 

 Barrel or basket area of rotating-blade propeller, 656 

 Baseplane and propeller-disc clearances, 540 

 Basic concepts for calculations and predictions, 1 



factors in ship design, 442 



screwprop design variables of D. W. Taylor, 586, 901, 

 902 

 Bates (J. L.) effective-power data for prelim design, 355 

 Beaching, keels; see Keels, resting 



vessels designed for, 808 

 Beam, and draft for preliminary design, 468 



as a design feature in confined waters, 662 



-draft influence on residuary resistance, 298, 299 



-Froude number, definition and use of, 11 



on ship length, dimensional graph of, 470 



selection of, in a new design, 468, 470 



WL, max, design lane for fore-and-aft position, 481 

 Bearing, thrust, relation between screwprop thrust and 



load at, 347, 348 

 Beaufort wind-velocity scale of U. S. Navy Dept, 284 

 Bed clearances in shallow-water operation, estimate of, 666 

 Behavior, probable, prediction for a prelim ship design, 459 



shallow-water, first approx to, 501 



ship, in confined waters, predicting, 389 

 Bibliography and references, partial and selected, on: 



added-mass, vibration, and damping effects, 439-441 



cavitation, 167-159 



change of trim and sinkage, 331 



Bibliography and references, partial and selected, on: 



condenser scoops, 703 



confined-water effects, 415 

 vessel design, 659 



controllable propellers, 579 



damping, vibration, and added-mass effects, 439-441 



distribution of vel and press around hydrofoils, 81, 82 



dredges, self-propelled, 779 



dynamic lift, 269 



eddy systems, 144 



electric analogy for flow patterns, 50 



ferryboats, (mostly double-ended), 790-792 



fishing vessels, 771-774 



fouling, 125 



friction resistance, 128-132 



geometric waves, 182-185 



Great Lakes cargo carriers, 755, 756 



hydrodynamics and hydraulics (books), 2 



hydrofoil-supported craft, 271-273 



icebreakers and iceships, 799, 804-806 



Kort nozzle, 687 



Lagally's Theorem, 71 



life-saving or rescue boats, 817, 818 



lightships, 816 



mathematical lines for ships, 204 



mechanical properties, air and water, 925 



model propellers, open-water test data, 333-335 

 wind-resistance tests, 278 



motorboats, 865-867 



paddlewheels, 335-337 



planing and planing craft, 269 

 'running-attitude diagrams, 331 



sailing-yacht design, 786, 787 



screw-propeller design, 606-609 



singing of propellers, 144 



sinkage and change of trim, 331 



sources and sinks, 70 



straight-element ship designs, 764, 765 



Telfer method of predicting ship resistance, 318, 319 



theoretical resistance calculations, 221, 222 



theory of similitude, 4 



thrust and towing-pull measurements, 311, 312 



tunnel stern vessels, 673 



vibration, damping, and added-mass effects, 439-441 



vortex streets or trails, 141, 144 



wake, 262 



wake-fraction diagrams, 359, 360 



wavemaking resistance, 217-219 



waves, geometric and general, 182-185 

 subsurface, 185 



yacht design, 786, 787 

 Bilge(s), diagonal, hull shape along, 517 



keel(s); see Keels 



prediction of flow pattern at, 255 



radius, formulas for computing, 477 

 Blade (s), area, paddlewheel, determining, 642 



circle of paddlewheel, definition of, 640 



control-surf, positioning stock axis rel to, 720 

 curvature of, for paddlewheel, 646 

 proportions of, for a paddlewheel, calculated, 641 

 rotating-, propeller; see Propeller (general classi- 

 fication) 

 rudder, stock axis position relative to, 720 



