190 
THE PROBLEM OF THE HULL AND ITS SCREW PROPELLER. 
VALUES OF K FOR SUBMARINES. 
Lake—Surface. 
1.17 1.13 | 1.085 | 1.04 | 1.00 | 1.027 | 1.095 | 1.14 | 1.19 | 1.23 1.29 | 1.45 
1.145 | 1.12 | 1.075 | 1.038 | 1.00 | 1.023 | 1.083 | 1.112} 1.17 | 1.21 1.25 | 1.35 
1.125 | 1.097 | 1.064 | 1.033 | 1.00 | 1.02 | 1.073 | 1.105 | 1.143 | 1.175 | 1.215 | 1.3 
1.105 | 1.082 | 1.055 | 1.03 | 1.00 | 1.019 | 1.062 | 1.089 | 1.12 | 1.147] 1.18 | 1.25 
1.086 | 1.068 | 1.045 | 1.025 | 1.00 | 1.017 | 1.05 | 1.072 | 1.097 | 1.12 | 1.148 | 1.2 
1.067 | 1.052 | 1.036 | 1.02 1.00 | 1.013 | 1.04 | 1.055 | 1.075 | 1.09 | 1.11 1.15 
1.047 | 1.037 | 1.025 | 1.015 | 1.00 | 1.01 1.03 | 1.04 | 1.052 | 1.063 | 1.075 | 1.1 
1.025 | 1.020 | 1.013 | 1.01 | 1.00 | 1.01 1.015 | 1.02 1.03 | 1.035 | 1.04 | 1.05 
1 1 1 1 1 
an 
aR 
a 
1 1 1 
, o u A ae : 
All below =unity until JL =1.12, when there may possibly occur a rapid increase in K, reach- 
ing 1.22 at hi =1.19 and rising rapidly. 
Holland Type. 
Submerged only as K=1 for Surface. 
Pe a a ob ao) ee sos | 
L.W.L. K 
150 | 1.275 | 1.385 | 1.395 | 1.395 | 1.395 | 1.375 || 1.34 | 1.25 
160 | 1.12 | 1.23 1.25 US) || 2S) 1.21 ues CS i OY 
170 | 1.04 | 1.12 1.14 |} 1.14 | 1.14 | 1.1 1.09 | 1.0 
180 | 1.0 1.04 | 1.06 | 1.06 | 1.06 | 1.03 | 1.025 | 1.0 
190 | 1.0 1.005 | 1.01 1.00 | 1.00 | 1.00 | 1.00 | 1.00 
200 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 
All greater lengths of L. W. L. have K=1. 
These K’s are not true power augments but are genuine variable 
changes in resistance, and therefore are not treated as the K in Problem 1, 
in the determination of cavitation. 
