954 



HYDRODYNAMICS IN SHIP DESIGN 



Curvature, dimensiouless, measurement and plotting 

 of, 196 

 flow, in screwprop blade, design corrections for, 625 

 hull, and resistance, relation between, 194 

 estimated friction allowances for, 110 

 longitudinal, flowplane, 199 



for shallow-water design, 665 

 notes on anah'sis, 195 

 0-diml, graphic determination, 196 

 instruction plan, 198 

 of section-area curve, 199 

 radius of, 2-diml, formula for, 195 

 surface, effect on friction drag, 110 

 transition, gradual, from nose to body, 196 

 value of fairness and, in ship lines, 193 

 0-diml, method of measuring, 196, 198 

 plot of DWL for ABC ship, 506, 507 



section-area curves for ABC ships, 544 

 Curve, section-area; see Section area 

 Curved surface; see Surface 

 Cutwater for ABC ships, 511 



blunt stem, design of, 676 

 Cycloidal propeller ; see Propeller, rotating-blade 

 Cylinders, drag of appendages approximating, 291 



Damping effects, partial bibliography on, 439 

 Deck(s), camber, diagrams for, 554 

 selection of, 553 

 details and abovewater profile, 553 

 straight-element ridge type, 554 

 Deduction, thrust; see Thrust 



Deep-water waves, relation to shallow-water waves, 180 

 Deflection of flow around separation zones, apparent, 139 



-type bossings, design rules for, 686 

 Deformation of screw-propeller blades, 634 

 Degree of balance of control surfaces, 720 

 Delineating, flow patterns by electric analogy, 49 

 mathematic, of section-area curves, 198 

 ship forms, mathematical lines for, 186 

 source-sink flow diagrams, 52 

 synthetic, 3-component, complex sea, 172-175 

 2-diml stream-form contours around single source, 52 

 Density, mass, reference data on, 94 



"standard" fresh and salt water, 915, 918 

 Depth(s), equivalent, of channels, def and calc of, 412 

 given, 2 per cent speed reduction in, 403 

 -length ratios of ship hulls, data on, 496 

 limiting, for ship trials, from D. W. Taylor, 407 



2 per cent resist increase, 404 

 submerged body, effect on pressure resistance, 323 

 water, given, practical resist-speed cases involving, 396 

 Design(s), ABC ship, appendages for arch-stern, 681 

 changes in final design, 896 

 motor tenders, additional design items for, 899 

 preliminary, model-test notes, 869 

 principal hull data, 870 

 roll-resisting keels, 695 

 abovewater section shapes, 551 

 alternative preliminary, preparation of, 501 

 amphibians, hydrodynamic, 806 

 anchor recesses, 556 

 and drag data for hydrofoils, 83 



performance allowances, ABC ship, 454, 456 

 appendage(s), fixed, 675 



Design(s), appendage(s), motorboat, 862 



movable, 706 



to avoid vibration, 700 

 as a compromise, 444 

 basic factors in, 442 

 beaching vessels and landing craft, 808 

 bilge-keel, 692-694 

 bossings, contra-guide or deflection tj'pe, 686 



fairing type, for shafts, 682 

 bow, propellers, 632 



rudders, 735 



temporary, for emergencies, 781 

 bulb bow, 508, 509 

 canoes, 752 

 chart(s), screw-propeller, 584 



data from, 335 

 contra-guide skeg ending, 532 



-horn for ABC ship, 733 



-rotating screw propellers, 655 



-rudder, 729 

 control surface(s), 706 



motorboat, 862 



structural, affected by hydrodynamics, 723 

 detail, adherence to in construction, 459 



of underwater hull, 504 

 devices to produce vert and transv thrust, 654 

 discharge openings through shell, 701 

 discontinuous-section hulls, 768 

 displacement-type motorboats, 754, 823 

 diving planes, bow and stern, 736 

 dry-cargo vessels, 762 



edges of appendages, leading and trailing, 675 

 equalizing powers of multiple propellers, 573 

 essence of, 444 



facilities for abovewater smoke and gas discharge, 563 

 features, applicable to confined waters, 659 



general, abovewater form, 546 



hydrodynamic, of amphibians, 806 



propeller, comments on, 596 

 self-propelled dredges, 777 



special, small-craft hulls, 822, 823 

 supporting horns for rudders, 690 

 ferryboat hull and appendages, 793 

 final ABC ship, proposed changes in, 896 

 fins, fixed stabilizing, 697 



torque-compensating, 699 

 fireboats or firefloats, 774 

 fishing vessels, 770 

 fixed objects in a stream, 675 



screw-propeller shrouding, 687 



stabilizing skegs or fins, 697 

 for conflicting steering requirements, 713 



hydraulic- and pump-jet propulsion, 648 



minimum thrust deduction, 541 



reduction of drag, sinkage and squat, 661 

 galvanic-action protectors, 704 

 general, of the propdevs, 567 

 horns, supporting, for rudders, 690 

 hull(s), and appendage combinations, 526 



fine, slender, 752 



rel of paddlewheel diameter and position to, 643 



water flow applied to, 545 

 hydraulic-jet propulsion, 648 

 hydrodynamic, effect of unrelated factors, 502 



