502 O.. Grim 
Fig. 24. Transverse wave; plot of force E 
for B= 1.0 
Summarizing Remarks to Part I 
It is certain that sufficiently exact solutions are obtained in the way here described. 
Recently, a Japanese study by Tasai [7] has been published in which numerous numerical 
results are presented which agree closely with those given in this paper. 
It should be mentioned that the method may be applied in the whole range of frequency 
from w = 0 tow =co. It appears necessary, however, that the sections are amenable to con- 
formal mapping. In this respect difficulties may arise for sections of which the contour is 
not perpendicular to the waterline at their intersection. 
The first term in Eq. (2) for the potential represents the potential of a periodical source 
iny=0, z=0. The coefficient A,, therefore, represents a measure for the strength of the 
source. It is now extremely remarkable to learn from Figs. 7-12 that the coefficient A, is 
complex and depends very strongly on both the shape of the section and the frequency. It is 
therefore a very crude and inaccurate approximation if only the shape of the waterline and 
the amplitude of the motion are considered for a method of singularities when choosing the 
singularities. 
