A similar procedure can now be used to draw the lines plan; half-breadths on different 

 waterlines and stations can be obtained from Figures 6a to 6p and the bow and stern contours 

 from Figure 11. The half-breadths must be set off at stations equally spaced along the 

 entrance and run. 



An estimate of the resistance and ehp can now be made from the contour charts, using 

 the format given in Tables B46 and B47. 



The information required to complete the tables is as follows: 



'WL = 21.39 



^WL ft 



= 



457.6 



Lgp ft 



= 



450.0 



B ft 



= 



66.0 



H ft 



= 



27.0 



A , tons 



= 



14,920 



S, sq ft 



= 



39,994 



Cfi 



= 



0.651 



B 



= 



450 



^rr = 6.82 

 66 



B 





66 



H 



— 



■7:7r = 2.44 

 27 



'BP 



= 21.21 



'M 



ft = 20.338 on WL 



A = 22.5 



^2/3 = 606.19 



/^i/3 = 24.621 



A^/^ = 4.962 



7 = 522,200 cu ft 



7'^' = 648.35 



V^^^ = 80.52 



S 39994 



= 6.168 



^2/3 648.35 



For the interpolation process, we need the values of A" and X^, where 



'X = ^ 3.0^ = 2(2.444 -3.0) = -1.112 



and A-^ = + 1.2365 



The value of the wetted surface S used above was calculated from the lines drawing. 

 An approximate value can be obtained from the contours shown in Figures B124 to B126 for 

 use in the first ehp estimates, which will probably be made for a number of forms before any 

 lines are drawn. 



D-5 



