SUBJECT INDEX 



Shaft struts, effect of, on propulsion, 256 

 Shallow water, effect of, on performance, 

 model, 6f|0 

 effect of, on resistance, U08, 4-14, U60; 



T-56, T-Sl 

 wave of translation In, l<-08 

 Shapes. See Bodies. 



Sharp, Geo. G., passenger-cargo vessel design, 702 

 Shear, of stiffened plates, T-31 

 Shekleton's report on underwater explosions, U79 

 Shell shock, T-155 



Shells, eight-oared, tests of, full-scale and 

 model, 283 

 elastic, theory of, 606 

 Shimmer method of photography, for recording 



explosion phenomena, T-121, T-156 

 Ship calculations, graphic Integrator and 



differentiator, T-1 24 

 Ship data, reduction and analysis of, ^U9 

 Ship design, model, 298 

 Ship models; effect of size on predicted 

 effective horsepower, 6l8 

 effect of transverse curvature on frlctlonal 



resistance of, 689 

 essential specifications for, 652; R-33'+ 

 geometrically similar, towing tests of, 615 

 liberty-ship series, towing tests of, for 



ATTC, 615 

 self-propelled, conditions for testing, T-T 27 

 wax, manufacturing of at TMB, 728 

 wood, building of, at U.S. Experimental Model 



Basin, 323 

 wooden versus paraffin, 319 

 Ship plates, iron and steel, 4-7'J- 



transition temperature of, in notch-tensile 

 tests, 709 

 Ship trials, methods and equipment, kjS 

 See also Standardization trials; Tactical 

 data; Turning tests. 

 Shipboard Fighter BS1 , experiments with model 



of, 33 

 Shipbuilding, theory of elasticity In, T-2 



theory of strength in, T-17 

 Shock. See also Impact; Shell shock. 

 Shock displacement gages, 5^3 

 Shock gage, reed, design of, 65'+ 

 reed, performance, 603 

 theoretical study of, 61 3 



Shock measurement, T-TUi 

 instruments for, 5^3 

 with crystal accelerometer, R-2U6 

 with reed gage , 603 

 Shock motion, response of system of single degree 



of freedom to, 6l 3 

 Shock testing machine, motions and stresses In, 



536 

 Shock vjaves, in air, photography of, 525 



In liquids and solids, propagation of, T-139 

 in water, measurements of, T-213 



photographic study of, R-77, R-203 

 protection against, R-49 

 Silver-plating, Brashear process, R-267 

 Similitude, laira of, in model tests, T-1 9U 

 SIMON BOLIVAR, propulslor lata for, model, T-68 



tests on, model, T-67 

 Singing of ship pronellers, T-123 

 Sink. See Source-sink. 

 Sinkage of ships in canals, 6oi 

 Sinkage of ships in shallow water, model, 6^■0 

 Six-component dynamometer, for testing ship appen- 

 dages, 692 

 Skeg, effect of on resistance of high-speed 

 target , 6'n 

 on WASHINGTON (BB56), natural frequency of, full- 

 scale, R-22 

 Skin friction, 193, 227, 267, 275, 333 



effect of roughness on, 729 

 Slip stream. See Plow. 

 Slotted tensile specimens, study of, 622,; R-243, 



R-271 

 Slow-motion camera, T-149 

 imooth-bottom hull, comparative tests of, model, 



669 

 Sonar dome, forces and moments on, measurement of, 

 model, 692 

 pressure distribution on, 606 

 Sound, insulation against, T-99 



underwater. See Underwater sound. 

 Sound box. See Hammer box. 

 Sound dome. See Sonar dome. 

 Sound waves, anomalies in propagation of, T-k. 

 Source-sink envelope, of a torpedo form, 271 

 'SOUTH DAKOTA (BB57), vibration in propelling 

 machinery, 5'*-7 



, 



