[Reprinted from the PROCEEDINGS OF THE RoyaL Socrrty, A, Vol. 103] 
Studies in Wave Resistance: Influence of the Form of the 
Water-plane Section of the Ship. 
T. H. HAveEtock, F.R.S. 
(Received April 5, 1923.) 
Introduction. 
1. The problem which is investigated in some detail in the following paper 
is the wave resistance of a vertical post in a uniform stream. The horizontal 
section of the post is of ship-shape form and the lines are varied in a certain 
manner while keeping the area of the section constant. 
A direct study of ship waves as a three-dimensional problem for a ship 
of finite dimensions has not yet been accomplished. From one point 
of view the problem has been attacked by the method of an equivalent 
distribution of pressure on the surface of the water. Some advance has also 
been made in the case of submerged bodies; I have shown previously how to 
calculate the wave resistance of a body whose form is derived by combining 
the stream-lines of a uniform current with certain distributions of sources and 
sinks, under the limitation that the dimensions of the body are small 
compared with its depth. On the other hand Michell in an extremely 
J. H. Michell, ‘ Phil. Mag.,’ vol. 45, p. 106 (1898). 
’ s 
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