THE PROBLEM OF THE HULL AND ITS SCREW PROPELLER. 
e 
201 
| I. H. Pig Revs. 
= FB e. h. p. v V Zp | Zs S S 
Est. Act. Est. Act. 
0747 WAS) |) O28) .3896 |—1.1718 | 1670] 1600 |4+1.09 | .135 | .1118 49.1 52 
09957 | 1642 | 10.45} .4902 |—1.042 2251 | 2200 |+ .8 .135 | .07742 | 58.12] 57.5 
1991 3284 | 13.21 | .6196 |— .728 4639 | 4800 |+ .502 | .135 | .08023 | 73.69 | 73.6 
2987 4926 | 15.05 | .7059 |— .545 7054 | 7125 |+ .346 | .135 | .08538 | 84.43 | 84.5 
3983 6568 | 16.45 | .7716 |— .415 9538 | 9300 |+ .235 | .135 | .08919 | 92.66) 92.5 
4978 8210 | 17.7 .8302 |— .314 | 12035 | 11600 |+ .145 | .135 | .09148 | 99.96 | 99.75 
5974 9852 | 18.92 | .8875 |— .233 | 14503 | 14625 |4+ .07 | .135 | .09275 | 107 106.8 
697 11494 | 19.76 | .9269 |— .1615 | 17098 | 17200 |+ .017 | .135 | .09679 | 112.3 | 112.1 
7965 | 13136 | 20.33 | .9536 |— .1012 | 19645 | 19600 |-+-0 .135 | .1069 | 116.8 | 116.2 
.8961 | 14778 | 20.8 .9756 |— .048 | 22205 | 22200 |+0 .135 | .1209 | 121.4 | 120.2 
.9957 | 16420 | 21.24] .9963 |— .001 | 24740 | 25200 |+0 .135 | .1347 | 125.9 | 124.8 
1.045 17230 | 21.44 | 1.006 |+ .0294*| 26537 | 26600 |+ .015 | .135 | .1396 | 127.9 | 126.5 
1.095 18062 | 21.62 | 1.014 |+ .056* | 28213 | 28100 |4+ .023 | .135 | .1457 | 129.9 | 129.2 
The next vessel given is extremely interesting on account of the enormous 
range of load fraction and large range of speed fraction through which the per- 
formance extends. 
VESSEL I. 
Hull. 
L: 1. W. lL. =245) 
B—2215o! 
H=6.687’ 
B+L. L. W. L.=.096 
Nom. B. C.=.41 
B. C. on C—D=.332 
H+B=.284 
B. C. on C—D corrected for a 247 
S. B. C. on X =.295 
2L. A. B.=245 
2L. A. B.+H=36.64 
S= .2225 
Type 2. 
Propeller. 
Niemen ancy enue Sia 2 
BI] FeKG (ets NA eta ion og SIN ed 3 
UENO) era a RHE A ea AWN ane AAI aay MEM Standard 
IB) OCA ea SMBs RUA OSU Nee 7.42! 
YEN a AEA ER AY EE SRM 10.833/ 
1 Sia ehecoa BD eva Ni Aid tli A ant 275 
CR SUC GS REM eae 6400 
TEAS Go SRI BIAS Was UAL EN Da 2074 
TTS eeven Ute nity gust cust CMa ale EPS 7775 
Laie ca BRN 0 ne (ent a eS 22.82 
ee PRE eT Me I MHEN CS LO E23 
Sede ee aap Giuio ie tualaole aerate 3625 
TEP COE A A A eS a ER .693 
De BLS ae aa Neh tne ay 2512 
*In this case Zp follows curve 5, Fig. 6, and Zs follows curve 3. 
