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Article type: Cover
1970 Volume 31 Pages
Cover1-
Published: March 25, 1970
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Article type: Cover
1970 Volume 31 Pages
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Published: March 25, 1970
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Article type: Appendix
1970 Volume 31 Pages
App1-
Published: March 25, 1970
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Article type: Appendix
1970 Volume 31 Pages
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Published: March 25, 1970
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Article type: Appendix
1970 Volume 31 Pages
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Published: March 25, 1970
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N. Iizuka
Article type: Article
1970 Volume 31 Pages
1-4
Published: March 25, 1970
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Y. Fujii, N. Mizuki
Article type: Article
1970 Volume 31 Pages
5-7
Published: March 25, 1970
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K. Honda
Article type: Article
1970 Volume 31 Pages
7-10
Published: March 25, 1970
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T. Tamura, Y. Nishitani
Article type: Article
1970 Volume 31 Pages
11-14
Published: March 25, 1970
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T. Harada
Article type: Article
1970 Volume 31 Pages
15-20
Published: March 25, 1970
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K. Taguchi
Article type: Article
1970 Volume 31 Pages
20-34
Published: March 25, 1970
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S. Kato
Article type: Article
1970 Volume 31 Pages
34-41
Published: March 25, 1970
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Y. Nakajima
Article type: Article
1970 Volume 31 Pages
41-45
Published: March 25, 1970
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H. Kikutani
Article type: Article
1970 Volume 31 Pages
46-49
Published: March 25, 1970
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T. Mozai
Article type: Article
1970 Volume 31 Pages
49-50
Published: March 25, 1970
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Y. Keida
Article type: Article
1970 Volume 31 Pages
51-52
Published: March 25, 1970
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H. Shinomiya, Y. Nishitani
Article type: Article
1970 Volume 31 Pages
52-57
Published: March 25, 1970
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T. Mozai
Article type: Article
1970 Volume 31 Pages
57-60
Published: March 25, 1970
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It is a fired idea that a ship can not stop immediately. The author wants to challenge this idea, and made some investigation about a ship brake. Since the appearance of gigantic ships, there arose many problems. But it seems that the problem of uneasiness of maneuvering a ship, especially in the area of near shore, is one of the most urgent. In this paper, the author reports about fundamental problems of ship brake and tried mathematical rough caloulation of the brake force in order to find the way of realization, as a step prior to experiments. There exist many devices or ideas of immediate stopping a ship already. For instance, reversing of the main engine and the propeller, antipropulsion jet of water, the parachutes in the water, etc. But unfortunately, most of them do not sutisfy the desire of captains or pilots yet. The author mentions that the most reasonable ship brake must be a simple type of strong resistance steel rod, which will be pushed out under water horizontally, from both sides of a ship, with remote control method; and also this brake must be used for turning the ship's head immediately, and consequently used for effective course keeping, especially during the ship is in slow speed, while the conventional rudder is rather no use. And if the shape of rods are designed to have turning mechanism, it will be used for roll-suppressing of the ship, too. It is also a problem what the efficiency of ship brake must be. As for this problem the author aimed at the maneuvability of a ship equivalent to a tenth size of its own ship; for instance, by using this device one could reduce the stopping distance and diameter of turning circle of a 200,000DWT tanker to these of 20,000DWT tanker. The author's speciality is the nautical instrument, and this problem does not fall in his proper field. But he had the necessity to consider this device in the aspect of ship dynamics from his own standpoint. That is the reason why he attempted a rough calculation of the brake force acoording to the fundamantal data. The curve he obtained will be applicable to a ship 170,000DWT, with varying speed, for an example. Finally, the author explained the relation between control lever in the bridge and the brake rods on both sides of the ship, by a diagram.
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S. Toyoda
Article type: Article
1970 Volume 31 Pages
60-64
Published: March 25, 1970
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Y. Miyoshi
Article type: Article
1970 Volume 31 Pages
64-68
Published: March 25, 1970
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[in Japanese]
Article type: Article
1970 Volume 31 Pages
68-72
Published: March 25, 1970
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A. Yamaguchi, Y. Mathsumoto, N. Ichinose, I. Hamahata, K. Kato
Article type: Article
1970 Volume 31 Pages
72-78
Published: March 25, 1970
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Y. Fujii, H. Yamanouchi, N. Mizuki, Y. Kurimura
Article type: Article
1970 Volume 31 Pages
79-81
Published: March 25, 1970
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Y. Fujii
Article type: Article
1970 Volume 31 Pages
81-84
Published: March 25, 1970
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T. Makishima
Article type: Article
1970 Volume 31 Pages
84-85
Published: March 25, 1970
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Article type: Cover
1970 Volume 31 Pages
Cover4-
Published: March 25, 1970
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