35 











i 













0.010 



























v^nix \ 























f 

 ' L 



= 0.125 

















TSSS/\t<\ 











0.008 







































* 0.006 







































0.004 



























■£- - 0.25 













0.002 





1^- 













IE 







































in 







/y/^- 



n 



* 



,-f- = 0.5 









n 







— __i 











2F* 



0.408 



F = 



\/gL 



Figure 20 



Wave -Resistance Coefficients c = ,~ n 2 s 



Referred to the Wetted 



Area S for the Pour TMB Models I-IV, f/L = 0.125 (For Comparison 

 of Range Single Curves for f/L = 0.25 and f/L =0.5 are Shown) 



To check the order of magnitude of the wave resistance and to en- 

 able a comparison with experimental data, resistance coefficients c w of the 

 four TMB models I to IV are shown in Figures 20 to 22, calculated for b/a = 1 /f 

 and C = I.07. In this case the depth of immersion ratios f/L correspond to 

 the technically more familiar f/D ratios as follows: 



f/L 



0.125 



0.25 



0.5 



f/D 



0.875 



1-75 



3-5 



Assuming a rather high viscous-drag coefficient (c = 0.003), the 

 relative importance of the wave resistance at various depths of immersion 



