Subject Index 



Accelerometer, integrating, 34 



Added mass, 115, llti, i;!(), VM, 141, 144, 145 14(i, 154, 155, 157, 

 25'J, 2(il, 2()2, 274, 2<J5 

 (■(H-lliciciit C, 110 



Admiralty, 



sea scale iivimber, 247 

 weather manual, 31 



Advanced theory of coupled ship motions, 257 



Affine ship sections, 130 



Air flow, S2 



Air pressure, 1, 2, 10, 22, 23, SI 

 coetliciciit, 85 

 fluctuations, Ki 

 on wave surfaces, 332 

 asyiiuuctrv of distriliutiou, 333 



Air turbulence, 2, .S2 



Air-water temperature difference, 51, 52, SI 



Amplitude, complex, 153, Hi!) 



Amplitude of 



air pressure variation, '■'>, 17 



deca.N-, 295, 323 



hogging and sagging, 2(8 



model motion, 143, 150 



oscillations of correlation function, 54 



ship yawing, 105 



vibratory stress, 291 

 Analog 



computers, 70, 71 



method, 170 

 Analysis of ship model ciiupleil pil( hing .-mil heaving test data, 143 



Analyzer, 



cross-spectral density, 348 

 power spectral density, 70, 72, 348 

 power spectrum, 3.50 

 prolial>ility distribution, 348 



Anemometer height, 24, 48, 54, 84 



Antipitching fins, 20!) 



AntiroUing, 



devices, 105 

 fins, 104 



Anti-stalling devices, 209 



Appendages, effect of, 125, 20!) 



Approach conditions (in slamming), 308 



Array method in measuring directional ihsfribution of waves, 79 



Atlantis (MV), 52, 76 



Attenuation of 



correlation function oscillations, 54 

 incident wave, 214 

 prism oscillations, 130 

 rolling amplitudes, 105 



Autocovariance (or auto-correlation) function, 54, 00, 01, 04, 70, 

 75, 349 



Axis of rotation (instantaneous), 148 



Beats of pitching oscillations, 184, 185 



Bending deflections, 183, 189, 204, 279, 290 



Bending moment, 256, 205, 275 

 ihnamic effects, 209 



effect of forward speed, 207, 270, 272, 274, 270, 279, 281-284 

 hogging, .sagging, 256 262, 275, 279, 307 

 ini])rovement of stati<' cali-ulation, 250, 257 

 in irregular waves, 208, 272, 279, 280 

 in short-crested sea, 308 



limiting, extreme, maximum or i)eak, 301, 307 

 model experiments, 26.5-286 



Bending moment 



nonlinear, 200, 307 



ob.served at sea, 200-200 



relationship to slamming load, 290-290 



second order effect, 270 



static methods or <'alculations, 25(5, 202, 203, 209, 283 

 Bending stress 



extreme conditions, 301 



observed at sea, 298-301 



range of, 203, 265, 299, 300 



statistical data, related to sea conditions, 298-301 



statistical data, unrelated to .sea conditions, 301 



Bernoulli theorem (also ec[uation), 100, 107, 239, 310 



Bilge keels, 127. 128, 130, 14.5, 148, 160, 215, 217 



Body-wave interference effect, 155, 257, 201, 265, 340 



Bottom plating, 1 45, 284, 285, 304 



Boundary conditions, 119, 130, 131, 310, 317, 344 



Boundary layer, 3, 10, 13, 83 



Broaching, 16.5, 181 



Cargo ships, 



C:-3 t\-pe, 299 



shunming of models, 290, 30S 



r and V sections, 270, 273, 27.5-277, 288 



Characteristic numbers, 292, 295 



Clan Alpine (SSl, 1!)2 



Closing error in bending moment diagrams, 265 



Coefficient of accession to inertia, 100, 120 



Coherency, 174, 175 



Complex potential, 317 



Complex sea, also seaway or wave systems (see ,Sea, coin])Iex) 



Computers, digital, 70 



Confidence bands (or limits), 64, 69, 88 



Conformal transformation, 10!)-lll, 144 



Conte-di-Savoia (S.'-i), 105 



Convection speed in Phillipps' theory, 17, 18 



Correlation 



coefticient, 78 



function, 54, 62 



method (or analysis), 79, 82 

 Correlogram, 54, 57, 78 



Coupled differential equations, 153, 160, 257, 258 

 Coupling 



betwei'n heaving and pitching, 134, 153, 157, 239, 257, 258 



d\nainic terms, l(i2, 164, 343 

 Covariance 



f))nction, 176 



transform method, 75 

 Cross-coupling, 



coetlicients, 208 



cyclically fluctuating terms, 157 



of hi'aving and pitching motions (see coupling), terms, 153 

 Cross flow hypothesis, 109, 338 

 Cross-spectral analysis, 173, 176 

 Cumberland (UMS), 129 

 Curves of declining angles, 120-12!) 

 Cusp, 314, 321 



Damping, hydrodynamic, 



coellicients, 134, 140, 157, 295 



dependence on s|)eed, 123, 128, 129, 149 



di.ssijjative, 153 



dynamic, 1.53 



effect of viscosity and freiiuoicy, 130 



355 



