Abstract
In 1961, the Japan Nuclear Ship Research Association made a contract with the Science and Technical Agency of Japanese Government, on the trial design of nuclear powered oceanographic and supply ship as one of the latter's projects for the peaceful use of nuclear power. The association organized a comittee to supervise the designing in which the author presided as the chairman.The following presentation is an outline discription of the design which was completed in July, 1962.The ship has 6, 350 gross tonnage and is equipped with a water cooled, water moderated pressurized water reactor which has 35 MW thermal output and produces 10, 000 s.h.p. The weight of the trial design was not placed in developing a new type of marine reactor nor in detailing about conventional part of a ship's design.The main object was to study about the feasibility of a comparatively small nuclear powered vessel with proved-type-reactor with satisfactory safety and also to find out where would the problems, technological and legal lie if we were to construct such a ship in a very near future.We believe that aim of the project has been attained satisfactorily.
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