THE PROBLEM OF THE HULL AND ITS SCREW PROPELLER. 195 
| DeaVeNes 1B 0724 Des lA TG Dana TCS La hae BS A es 8,530 
2L. A. B.+A,=13.5 Heo IT ag BLY CO 79 
Nom. B. C.=.481 IVAN NASER eat sa Da NI Aa 18.65 
B. C. on C—D=.35 Die Coo ats STOPS CM aa 6 
BN GUE G- lp iconectedctor 1 ss 1 eA AMIR EL Rc aa A) BRC 3,830 
B CAN MME Aah a ANE eh At Au M Aa Seo .62 
8S. B. C. on X=.55 DAN es Md eas oee Colca ae A ae 2 agit 
S=.225 Red etl eae cis ssBan ce ted neds Ea 3,523 
Surface Condition—A ralysis. 
S. H. P.g Revs. 
v jehp = oa Zp K 7 Zs SS S 
Est. Act. Est. Act. 
| 
6 60 | .0253 | 1.667 | 1.06 80.4 80 | .3217 | 1.32 £2251 O73 612249 ioee 
8| 144| .05075 | 1.32 | 1.042] 176 200 | .4289 | .975 | .225 | .1061 | 163.6 | 160.1 
10} 268 | .1131 08} |] LO 369 370 | .5361 | .688 | .225 | .1149 | 206.6 | 203.4 
1 GAA SG NSN MOR |) Cs 632 | .6433 | .46 .225 | 1177 | 248.7 | 247 
14] 740] .3122 | .522| 1.068] 1131 1134 | .7506 | .2784 | .225 | .1371 | 296.7 | 300.5 
16 | 1050 | .443 .362| 1.10 | 1684 1670 | .8578 | .11 .225 | .1386 | 339.6 | 345 
17 | 1360 | .574 25 | 1.13 | 2239 25007] .9114 | .035 | .225 |] .155 | 367.9 | 362.5 
The power data for the 17-knot point are doubtful as there was no way of 
measuring it, and the shop brake-test power for the revolutions was used. 
Submerged Condition. 
S. H. P.d Revs. 
v leh.p = it Zp ; aa Zi K Zs S s 
Est. | Act. Est Act 
5 | 100 | .04219 | 1.41 PZOSAeOSh | etserer- 1.1 USI No Sede 1.55 MLZO S222 | tel 3 OMe selene 
6 | 140 | .05512 | 1.31 .3217 | .067 |...... 1.08 NSO) la veona 1.32 .225| .2482 | 145.9 ]....... 
8 | 264 | .1114 - 983 -4289 | .089 | 1.08 | 1.032 473 464 .975 | .225) .2852 | 204.6 | 203.4 
10 | 474 | .20 .7279 | .5361 | .145 .87 | 1.00 914 | 896 .688 | .225| .2846 | 255.6 | 253 
12 | 774 | .3265 51 .6433 | .255 .62 | 1.10 1543 | 1628?} .46 .225] .2842 | 306.5 | 303.5 
Li CSU a a Et ESO I I 
Neither of vessels A and B was employed in obtaining the curves of design 
but, unfortunately, due to lack of reliable data, they both formed one of several 
vessels used in obtaining the values of K for their respective types. 
