著者

山田 和平 萩原 秀樹 恵良 悠一

出版者

東海大学出版会

雑誌

東海大学紀要. 情報通信学部 東海大学情報通信学部 [編] (ISSN:21855587)

巻号頁・発行日

vol.3, no.2, pp.19-24, 2010

著者

桑島 進 萩原 秀樹 岩坂 直人

出版者

公益社団法人 日本航海学会

雑誌

日本航海学会論文集 (ISSN:03887405)

巻号頁・発行日

vol.94, pp.219-230, 1996

参考文献数

6

被引用文献数

4 1

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A FDR (flight data recorder) of air plane is well known to be a useful instrument to review a flight especially in the case of accidents. But the ship does not have such a useful recorder. That is the reason why such recorder was not essential for ship to merely sail and moreover many sensors to measure phenomena in ocean were not developed yet. But recently an occasion of the accident of Ro-Ro passenger ship [Estonia] in Baltic Sea, the requirement of VDR (Voyage Data Recorder) is on the rise in all over the world. So, we tried to develop VDR with up-to-date sensor and computer techniques. At first we formed a clear conception of VDR with reference to FDR and other recorders. Then concerning about wish of use and desirable function of VDR, we asked intention of users who are in various field of industry including shipping Co. using the questionnaire method. And finally we proposed a modern VDR with many suitable functions for each user based on our own concept.

著者

須田 建 巻島 勉 堀籠 教夫 桑島 進 大津 皓平 萩原 秀樹

出版者

公益社団法人 日本航海学会

雑誌

日本航海学会論文集 (ISSN:03887405)

巻号頁・発行日

vol.67, pp.149-154, 1982

被引用文献数

3 1

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In the previous report a procedure of weather routing in the North Pacific in winter is proposed, the aim of which is not to calculate the optimum route for each individual voyage but to forecast, at the time of departure of ships, the mean zonal index for the first and the last 5-day periods in any one of the three categories "high", "medium" and "low" and then to select the recommended route that is proper for the forecast index category. In this paper, the relation between the zonal index and the wave distribution in the North Pacific, which has been derived from one year's data and used as the basis of our procedure, is confirmed using data for three years. Some modification is made to the wave distribution model and the revised recommended routes corresponding to the new model are presented. Finally, the advantage of these routes is evaluated by numerical simulation.