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Article type: Cover
Pages
Cover1-
Published: December 30, 1962
Released on J-STAGE: February 24, 2018
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Article type: Cover
Pages
Cover2-
Published: December 30, 1962
Released on J-STAGE: February 24, 2018
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Article type: Appendix
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App1-
Published: December 30, 1962
Released on J-STAGE: February 24, 2018
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Tadashi SO, Tsutomu KIMURA, Takao MATSUMURA
Article type: Article
Pages
1-8
Published: December 30, 1962
Released on J-STAGE: February 24, 2018
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This paper deals with the sinking and refloating motion of dock gate vessels with the aim of clarifying the relation among the draft of vessel, the quantity of ballast water, speed of and time required for sinking and refloating, and stability of the vessel at the following typical stages. (1) 1st. stage of sinking : the vessel sinks charging only lower tank with ballast water. (2) 2nd. stage of sinking : the vessel sinks charging both lower and upper tanks with ballast water. (3) 3rd. stage of sinking : the lower tank is filled with ballast water and the vessel sinks charging only upper tank with ballast water. (4) Stage at which the vessel is sitting on the entrance ground of a dock. (5) 1st. stage of refloating : the vessel begins to refloat rapidly. (6) 2nd. stage of refloating : the vessel refloats discharging ballast water from upper tank.
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Seiichi KOSEKI, Masayoshi KONDO, Kozo MASUMOTO, Shinsuke AKAGI
Article type: Article
Pages
9-17
Published: December 30, 1962
Released on J-STAGE: February 24, 2018
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Heating coils installed in large tankers are of very long length, some being over 10,000 m in total length. However, due to many unknown factors about their heat transfer, it has been difficult to make their exact calculations; little consideration has been given to the design of these coils. The authors carried out a theoretical and experimental investigation on heat transfer by using a fuel oil tank of a large tanker. Results obtained are as follows: (1) The heat transfer coefficient of tank coils can be evaluated experimentally. (2) The influence of condensate in coil on heat transfer can be made clear by the measurement of the tube wall temperature. (3) Effective limit length of a heating coil can be determined. (4) Heat loss from cargo oil tank in heating can be evaluated. Thus, the reasonable design will result in a substantial reduction of heating coil length without heating effect decrease.
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Seikan ISHIGAI, Kenichi HIRABAYASHI, Akira INOUE, Sadaaki NAKAMURA
Article type: Article
Pages
18-26
Published: December 30, 1962
Released on J-STAGE: February 24, 2018
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There is no doubt about the importance of measuring the power of marine main engine at sea trial for the ship engineers, engine designers, operators and etc. Up to now, each shipbuilder has made power measurements based on his own knowledges and experiences. The data thus obtained have hardly ever been interchanged to each other. In view of the circumstances, the Kansai Society of Naval Architects inquired power measurement methods used in Japan. It is fortunate that great deal of actual data and informations have been obtained, the result of which is given in this paper.
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Fukuo SHIBATA
Article type: Article
Pages
27-32
Published: December 30, 1962
Released on J-STAGE: February 24, 2018
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Recently motors used on ships are increasing in their number. Among them there still remain motors which require to be controlled non-stepwise or multi-stepwise. The author has already introduced, in the Journals Nos. 101 and 105 of the Society, his controlling method using wound rotor type induction motors under the name of Shibata Reducer. In this controlling method, one of the most important points is that regenerative braking can be carried out. There are three methods of regenerative braking in the Shibata Reducer. The author also obtained the successful test result about the regenerative braking. He introduces the method and the test result in this paper.
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Masayuki YAMAMOTO
Article type: Article
Pages
33-44
Published: December 30, 1962
Released on J-STAGE: February 24, 2018
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The thermal stress problem has been discussed on a thick cylinder of the material, which does not obey Hooke's law, due to a temperature difference between the inner and outer surfaces under a steady heat flow and besides due to uniform hydraulic pressures on its surfaces. In the former reports of the same subject by this author, the temperature distribution was uniform in the axial direction, but in this report, he treats the case that the temperature distribution between the both surfaces of the cylinder is a function of axial coordinate. The stress and strain relation ε=aσ/(a-bσ)(a+b'σ), where ε is strain, σ stress and a,b,b' coefficients of the material, is used. Some numerical examples are given.
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[in Japanese]
Article type: Article
Pages
45-54
Published: December 30, 1962
Released on J-STAGE: February 24, 2018
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[in Japanese]
Article type: Article
Pages
55-61
Published: December 30, 1962
Released on J-STAGE: February 24, 2018
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[in Japanese]
Article type: Article
Pages
62-65
Published: December 30, 1962
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[in Japanese]
Article type: Article
Pages
67-73
Published: December 30, 1962
Released on J-STAGE: February 24, 2018
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Article type: Appendix
Pages
74-77
Published: December 30, 1962
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Article type: Appendix
Pages
App2-
Published: December 30, 1962
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Article type: Appendix
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App3-
Published: December 30, 1962
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Article type: Appendix
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App4-
Published: December 30, 1962
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Article type: Appendix
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App5-
Published: December 30, 1962
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Article type: Appendix
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App6-
Published: December 30, 1962
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Article type: Appendix
Pages
App7-
Published: December 30, 1962
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Article type: Appendix
Pages
App8-
Published: December 30, 1962
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Article type: Appendix
Pages
App9-
Published: December 30, 1962
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Article type: Cover
Pages
Cover3-
Published: December 30, 1962
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