Abstract
The eddy-making resistance due to the bilge keels was investigated in the previous papers. The effect of the ship form on the eddy-making resistance to the rolling of a ship hull is discussed in the present paper from the results of the systematic two dimensional model experiments. It is found that the eddy-making resistance to the rolling of a ship hull is large in the case of a rectangular section as much as the resistance due to the bilge keels and decreases rapidly as a radius of bilge circle increases, and that the resistance to a parallel middle body of a usual ship becomes negligibly small but its resistance to a fore or after section of a ship becomes a considerable amount.Next, the eddy-making resistance to the rolling of a ship hull is found to follow approximately the law of comparison by Froude from the results of the similar rhombic mod el experiment, and a method of approximate estimation of the resistance to the rolling of an actual ship is obtained.
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