974 



HYDRODYNAMICS IN SHIP DESIGN 



Source(s") and smk(s"), 3-diinl, flow pattern around, 66 

 Space layout, first, for planing hull, 827 

 round-bottom motorboat hull, 852 

 Spanwise distribution of circulation and lift, 83 

 Spars, design to reduce T\ind drag, 566 

 Special and submerged forms, estimate of resistance, 313 

 -purpose craft, classification and design, 750 



of the future, 818 

 -service vessel, preliminary hydrodynamic design, 750 

 Specific coefficients, definition of, 5 

 gravity, of a liquid, def of, 5 

 resistance, def of, 5 

 smoothness problems, 739 

 terms, derivation and use of, 5 

 weight, definition of, 5 

 Specification(s), design, for a merchant vessel, 447, 449-453 

 involving hydrodynamics, formulation, 446 

 partial, for a passenger-cargo ship, 447 

 ready-made, interpretation of, 454 

 ship, departures from letter of, 454 

 Speed(s), and power, effect of shallow water on, 390 

 increasing the, for an existing ship, 387 

 changes in level and trim with, 325 

 corresponding values, in four sets of units, 927 

 deep-water, from shallow-water resist-speed data, 400 

 economical and practical, in shallow water, 660 

 -length quotient, and F„, tables of, 928 



variation of total resist with, 308-310 

 rate of var of model residuary resist with, 306-308 

 reduction of 2 per cent in given depth of water, 403 

 requirements, for a new ship, 449 

 reserve, desirability of, 574, 575 

 -resistance determination of O. Schlichting in shallow 



water, definition diagram, 392 

 shallow-water, from deep-water resist-speed data, 397 

 quantitative effect of in subcritical range, 390 

 ship, very low, resistance data for, 306 

 solitary-wave, for shallow water, 661 

 supercritical, confined water operation at, 412, 413 

 sustained, discussion of, 455-457 

 ultra-high, displacement-type craft, design of, 754 



strut-arm shapes for, 680 

 values of, in four English units, 927 

 var of attitude and position of planing craft with, 329 

 model residuary resist with, 306-308 

 total and residuary resistance with, on planing 

 forms, 269 

 Sponsons, notes on design of, 560, 561 

 Spray strips, for planing craft, 841 



to counteract engine torque, 580, 699 

 Square-draft, definition and sketch of, 393 

 to water-depth ratio, 393 

 nomogram for, 393 

 Squat, and attitude diagrams, 325 



design for reduction of, 661 

 Stability, dj-namic metacentric, check of, 553 

 definition of, 443 

 metacentric and pendulum, on submarine, 812 



first estimate of, 478 

 pendulum, on a submarine, 813 

 range of, preliminary check, 553 

 Stabilizer, Plum, for trim control on planing craft, 840 

 Stabilizing fins, fixed, design, 697 

 notes on aspect ratio, 698 



Stack ; see Smoke 

 Standard series; see Series 



use of in estimating ship drag, 298 

 values, for engineering concepts, in English units, 926 

 "Standard" body plans, 231-234 



fresh and salt water, reference data on, 915 

 wave systems, tentative, for ship design and evalua- 

 tion, 172 

 waves for design purposes, 171 

 Static forces, equilibrium of dynamic and, on submarine, 



812 

 Steepness ratios in waves, data on, 169 

 Steering and maneuvering, behavior, first approx, 501 

 swinging propellers for, 737 

 in offset positions in channels, 413 

 requirements, design for conflicting, 713 

 Stem, blunt, cutwater for, design of, 676 

 construction of, 508 

 shape at various waterlines, 508 

 of motorboat, 842 

 Stereoscopic wave photos, 177, 179 

 Stern(s), ABC ship, rudder designs for two, 727 

 arch-, ABC design, appendages for, 681 

 arch type, flow analysis, 525 



for single screw, design of, 521 

 bulb, proposals for, 599 

 contra-; see Contra- 



guide, design notes for, 532 

 diving planes, design rules for, 736 

 forms for twin- and quadruple-screw ships, 520 

 immersed transom, design of, 529 

 multiple-screw, typical, 236 



skeg, design of, 531 

 profiles, 491 



and rudder shape, 709 

 single-screw, arch type, 521 



general arrangement, 518 

 transom, ABC sMp, profile of, 492 

 edge, flow under rounded, 531 

 in section-area curve, 485 

 Narvik class DD, 531 

 parameters for, 485 

 shaping of, 530, 531 

 tunnel, craft, powering of, 672 

 design of, 669 



vessels, bibhography on, 673 

 unsymmetrical single-screw, design of, 520 

 -wave crest height and position, estimate of, 244 

 Sternwheels, performance data on, 335 

 Still-air and wind resistance of motorboats, 862 



ship, 278, 322 

 Sting mounting for submerged bodies, 323 

 Stock(s), axis, positioning rel to control-surf blade, 720 



model screwprops, for model self-propulsion, 592, 870' 

 Straight-element hulls, bibhography on, 764 

 design of, 762 

 friction drag on, 127 

 use for shallow-water vessels, 666 

 ridge-type deck, 554 

 Strakes, bulged fender, design of, 769 

 Stream form; see Form 



Stream fimction, for flow around rod and sphere, 41 

 formulas for 2-diml flows, 17 

 3-diml flows, 20 



