The braking method of launching vessels introduced by the author hereinbelow is an entirely new idea derived from the fact that the turning resistance is by far greater than that of straight running. We pull and turn the launching vessels by means of steel wires fastened to the ground at one end, to let the energy of motion of ships be expended by the turning resistance until the vessel come to a standstill while guiding them onto the prearranged course. The author examined the theory of the similarity of model test regarding the braking method and ascertained the effectiveness of the method by conducting experiments on two kinds of models. In this paper, the outline of the method is introduced.
