305 The forces on a submerged spheroid moving in a circular path 
1931). Curve B shows the effect of circular motion in this particular case; the 
difference between the two curves is quite small even in this rather extreme case. 
A curve is not given for the couple G, as the quantities M are rather difficult to 
evaluate with sufficient accuracy for this purpose; however, approximate computa- 
tions were made and the maximum value appears to be at about AQ/,/(gf) = 1:25 
with a value of G/7gpb* of about 0-026. It might be expected that the couple would 
be small for a solid of revolution in this particular case; it would probably be larger 
for a flat ellipsoid, for which similar calculations could be made by the methods used 
in the present work, the appropriate source and doublet distributions being then 
over the plane area enclosed by the elliptic focal conic. 
REFERENCES 
Havelock, T. H. 1931 Proc. Roy. Soc. A, 131, 275. 
Havelock, T. H. 1949 Quart. J. Mech. Appl. Math. 2, 332. 
Lamb, H. 1932 Hydrodynamics, 6th ed., p. 141. Cambridge University Press. 
Sretensky, L. 1946 C.R. Acad. Sci. U.R.S.S. 44, no. 9. 
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