日本航海学会論文集
Online ISSN : 2187-3275
Print ISSN : 0388-7405
ISSN-L : 0388-7405
120 巻
選択された号の論文の34件中1~34を表示しています
  • 原稿種別: 表紙
    2009 年 120 巻 p. Cover1-
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
  • 原稿種別: 付録等
    2009 年 120 巻 p. App1-
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
  • 原稿種別: 付録等
    2009 年 120 巻 p. App2-
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
  • 原稿種別: 目次
    2009 年 120 巻 p. Toc1-
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
  • 原稿種別: 目次
    2009 年 120 巻 p. Toc2-
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
  • 小屋野 晶, 国枝 佳明, 甲斐 繁利, 外谷 進
    原稿種別: 本文
    2009 年 120 巻 p. 1-7
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    The Authors have researched on the development of Maritime Education and Training Methods in order to improve the effect of training using the onboard ship-handling simulator which was equipped in Ginga Maru. In the experiment, cadets who will take 4^<th> grade maritime officer (students of the National Maritime Polytechnic College) evaluated their own knowledge and skill of "Navigational Watch in the inland sea". At the same time experienced Captain evaluated them. Obtained results are as follows. (1) Appropriate and concrete briefing is effective. (2) Self-evaluation of the cadets will be severe gradually and close to evaluation by expert. (3) Small difference between self-evaluation and expert's evaluation shows that the training is effective. (4) We can know the needed training contents from the knowledge and skill which have large difference between self-evaluation and expert's evaluation. (5) The focus training for the above training contents with onboard ship-handling simulator is effective.
  • 岩崎 寛希, 川本 周平, 水井 真治
    原稿種別: 本文
    2009 年 120 巻 p. 9-17
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    To investigate the cause of the distress, in the present marine accident inquies, charts of the vessels concerned and the course recorder data are submitted as physical evidence. Master's witness is also submitted as complementary evidence. However, this process could be less precise and objective in identifying the cause of the distress. For traffic control, radar images are recorded by MARTIS (MARINE TRAFFIC INFORMATION SERVICE). In this study, we reexamine the process to investigate the cause of collision by using the record of the radar images.
  • 井上 欣三, 安田 克, 瀬田 広明
    原稿種別: 本文
    2009 年 120 巻 p. 19-26
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    When a bridge crossing over a narrow channel is planned to construct, systematic assessment is necessary to verify how the layout of bridge piers affects to the marine traffic safety and how the safety measures are effective to improve the ship navigation safety. In the present paper, a systematic assessment procedure is proposed as to be able to solve above issues from the viewpoints of navigation difficulty, ship handling safety, aggregate evaluation and individual evaluation. And a case study was carried out to seek guidelines for bridge pier layout design and navigation safety countermeasures to be taken. From the results based on the verification employing the systematic assessment proposed, guidelines for bridge construction at sea can be found as follows; (1)Relating to the layout of piers, pier to pier distance should be designed as to be able to keep 2,000m as a rough idea. (2)Relating to the number of pier, three-piers-type makes collision risk against piers increase considerably comparing with one or two piers type. (3)Relating to traffic control to avoid encountering between ships larger than 40,000GT, this kind of traffic control based on the adjustment of estimated time of arrival has considerable effect as a safety measure.
  • 南 真紀子, 福戸 淳司, 丹羽 康之
    原稿種別: 本文
    2009 年 120 巻 p. 27-33
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    Most causes of ships' collision accident are navigator's human error such as improper lookout, non-compliance with navigation rules and so on. Collisions set off not only losses of lives and properties but the environment pollutions. For safety of navigation, it is important to prevent these human errors. In assessing collision risks and making a plan for collision avoidance maneuver, officer of the watch predicts future movement of the encountered ships. Effective communication between encountered ships and the way for confirming both ships' intention are expected to improve navigation safety. Communication using VHF Radio is an effective way. Actually, VHF radio communication increases. Therefore communication still has problems in linguistic barriers and in misunderstanding messages from noisy VHF Radio. To clear the uncertainty of encountered ship's movement, we started a research on navigational intention exchange support system (NIESS) using AIS binary messages. In this research, prototypes of the NIESS and an AIS signal generator have been developed to assess feasibility of the NIESS. This paper presents the results of the user tests and discusses the feasibility of the NIESS.
  • 竹本 孝弘, 岩崎 裕行, 古荘 雅生, 阪本 義治
    原稿種別: 本文
    2009 年 120 巻 p. 35-43
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    Navigators take action to avoid the collision with other ship according to the situation awareness or movements of it. These collision avoiding actions taking by navigators are chains of actions based on the navigator's information processing system and collision accidents are occurred by navigators' errors which are happened on the navigators' information processing system, the action of other ship, and chains of theses and combined. Authors made the action model for preventing collision based on the navigator's information processing system and investigated navigators' errors which occurred in every step of collision avoiding action. Furthermore we compare navigators' actions which lead to collisions and avoid collisions safely and obtain useful information to prevent collision accidents as follows. ・ Navigators' errors are repeated in the steps of navigators' collision avoiding actions. ・ Navigators' errors are occurred in the step of "Awareness of other ship" or "Recognize other ship's movement". ・ It is important that navigators recognize other ship's movement exactly to avoid the collision. ・ Navigators aware the other ship, recognize the other ship's movement exactly, and estimate and confirm the risk of collision by several means in all cases of avoiding collision safely we investigated.
  • 小原 朋尚, 古莊 雅生, 藤本 昌志, 渕 真輝
    原稿種別: 本文
    2009 年 120 巻 p. 45-50
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    Various problems concerning on the coordination of the coastal use have occurred in the coastal zone around Japan. However, the political systems and laws for these solutions or preventive measures are still remaining problems. Moreover, each systems and laws are not in cooperation. Those systems and laws are biased in general. The main subject points out both solutions for coordination of the coastal use by the voluntary management rule and solutions for making agreement by facilitator. The aptitude and the role of a facilitator in suitable image should be considered in the future work.
  • 北條 晴正, 海老沼 拓史, 高須 知二, 安田 明生
    原稿種別: 本文
    2009 年 120 巻 p. 51-57
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    For ubiquitous sensor network applications in shallow water coastal zone, a low-cost consumer L1 C/A-code GPS receiver with a small patch antenna is a suitable sensor for positioning and timing of a node. The goal of this research is to realize a single-frequency RTK-GPS sensor providing precise positioning information in order to improve the underwater ultrasonic communication between sea surface and bottom floor in shallow water, where many multipath echos and non-uniform water flows degrade the communication quality. Since antenna gain pattern is one of the important factors for RTK-GPS, we focused on the optimization of GPS antennas implementation, such as ground plane size and antenna height above sea surface. In this paper, several different combinations of the groud plane and antenna height were evaluated by field tests. The antenna gain paterns including sear-surface effects were also evaluated by an electromagnetic field analysys method called UTD. The results showed that certain combination of ground plane and antenna height provides favorable signal reception condition above sea surface and improves the fix-rate of signle-frequency RTK-GPS positioning.
  • 平田 法隆, Krisana PUNAYANGKOOL, 小瀬 邦治, 長谷川 和彦
    原稿種別: 本文
    2009 年 120 巻 p. 59-64
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    In South East Asia, there are many rivers that are suitable for transportation. However, at the end of rainy season, a large amount of sedimentation arises in the river. It causes frequent accidents such as groundings. Therefore, those rivers need to be dredged for the safety navigation. For this purpose, it is very important to measure the water depth timely and easily. However, it is still difficult to measure water depth in wide area. The authors have proposed a simple method. The measurement of water depth of the river using Kinematic GPS (K-GPS) and sounder is investigated. However, the tidal effect should be taking into an account for the precise measurement. The tide level of each measurement point was estimated by linear interpolation from tide tables. Substituting thus estimated tide level from the measured surface altitude of the river surface by K-GPS, river chart datum of each point was estimated. Thus estimated chart datum on downstream-bound and upstream-bound coincide well, and the proposed method of eliminating tide was verified. Therefore it is able to obtain the river water depth combining the tide information and measured sounder data.
  • 和田 雅昭, 畑中 勝守
    原稿種別: 本文
    2009 年 120 巻 p. 65-71
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    In the series of our research works, the authors have been working on the support of fishing industry by using information and communication technologies. In this paper, we report on a wireless network namely "Marine Broadband Framework" constructed aiming at the improvement of an intelligent productivity and safety in the coastal region. Marine broadband framework is a wireless network of which the transmission rate is considerably as much as ADSL and it can be successfully applied to small fishing vessels operating in the coastal regions. The construction of marine broadband framework by using wireless LAN system of the IEEE802.11j standard, and the experiment of coverage in the Wakkanai coast had been carried out. In this experiment, we confirmed the marine broadband framework can be used within the range of about 14km from the base station that had installed on the coastline. Moreover, the operation of marine broadband framework intended for a small fishing vessel has begun in the Rumoi coast since July, 2008. In the range of about 3km, the actual throughput of 10Mbps and more is recorded. Experimental results show that a wireless network is applicable in the coastal region effectively as much as ADSL.
  • 行平 真也, 清水 健一, 高木 保昌, 高山 久明, 合田 政次
    原稿種別: 本文
    2009 年 120 巻 p. 73-79
    発行日: 2009/03/01
    公開日: 2017/01/21
    ジャーナル フリー
    The purpose of this study is to examine the educational effects of on-board training as general academic subjects. The results are shown below. (1) From the results of attitude survey of students, it was found that through the on-board training, students increased their appreciation of the importance of "ship" as well as the vocation and character of "seaman". Also, it was suggested that the on-board training was effective in popularizing the maritime affairs. (2) In terms of a change of students' minds after on-board training, the minds of most students changed from the expectation and anxiety before training to the feeling that they had a very valuable experience through training. From this result, it was suggested that the students acquired a sense of accomplishment and satisfaction in training. (3) It was found that there were fifteen categories of growth and experience felt by the students. The respective categories were summarized into three groups as follows: "curriculum and environment of on-board training"; "educational effects of group activities and group life"; and "own development and growth". Also, it was inferred that these three larger categories connected each other in the effect of the education.
  • 西村 知久, 小林 弘明
    原稿種別: 本文
    2009 年 120 巻 p. 81-88
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    Recognition is to understand motion and present situation on other vessels correctly and regard them in danger. This study has verified substance of the recognition by analyzing speeches in bridge teams. Restricted visibility and existence of fishing boats request them to collect much and frequent information on targets. This action makes them understand the good recognition and realizes safe navigation. However; it has been also verified that the capacity of the frequency on the collection is once in 23 seconds or less. This paper theoretically shows that capacity suffocates safe navigation.
  • 外谷 進, 小林 弘明
    原稿種別: 本文
    2009 年 120 巻 p. 89-98
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    As recent merchant vessels are purpose-built and growing in size, the impact of a maritime disaster became more serious. So the mariners are required to execute onboard works without fail. To execute onboard work unfailingly, the mariners are required to exert their techniques adequately. However, there are few examples that clarify the management of mariners' technical exertion. In this paper, authors tried to clarify the function of management in ship operation. On analyzing the function of management, authors proposed the definition of the function of management and organized the content of the function in "4W; what, why, when, who" and "1H; how" conditions. On the basis of the concept of the function of management, authors carried out the experiment and analyzed/compared the maneuvering of experienced mariners and freshman mariners in the ship-handling simulator. As the result of the experiment, the validity of the proposing concept and the importance of the function of management became clear.
  • 笹 健児, 寺田 大介, 永井 紀彦, 河合 弘泰
    原稿種別: 本文
    2009 年 120 巻 p. 99-106
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    From viewpoint of a ship safety and a cargo management, the examination of a criterion of judge of ferry cancel is carried out, based on both observed ship motions when the ship encounters a typhoon and coastal wave data at that time. Ship motions are observed by using 5,000GT type ferry boat. And as the wave data, coastal waves that recorded with NOWOHAS instead of the encounter wave which can not be measured, are used. These data are analyzed by Spectral Analysis and the characteristics are analyzed in detail. Moreover, numerical reproductions of ship motions based on observed coastal waves are carried out, and a couple of future problems with respect to the decision of the criterion of judge of ferry cancel are considered.
  • 榊原 繁樹, 小林 英一, 大竹 祐一郎, 原田 賢治, 久保 雅義
    原稿種別: 本文
    2009 年 120 巻 p. 107-115
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    In our previous study, a numerical simulation procedure of moored ship motions induced by tsunami was proposed, and characteristics of the motions and the mooring loads affected by berth location, ship kind, ship condition, and mooring system were investigated. Furthermore the accuracy of connection between both simulations for tsunami and moored ship motions was improved by a consideration on reflected waves from the coastal line, breakwaters and quay walls. In this paper, we try to find out a countermeasure by fendering system for the large motions of the moored LNG-carrier induced by tsunami, which was pointed out in our previous study.
  • 井関 俊夫
    原稿種別: 本文
    2009 年 120 巻 p. 117-123
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    To reduce the GHG (Greenhouse Gas) emissions from shipping, establishment of fuel economy indicators (the ten mode indicators) for ocean transportation has been rushed. Simple and accurate methods for estimating the directional wave spectrum around the ship are needed to evaluate the actual fuel efficiency. In this paper, the Bayesian modeling procedure is modified for real-time estimation of directional wave spectra using non-stationary ship motion data. The assumption of stationary stochastic processes is applied to the seaway, but not to ship response because ship response also depends on ship maneuvers. Ship response is strongly affected by changes in the encounter angle and frequency of waves. Therefore, it is need to be a real-time system that can deal with non-stationary stochastic processes and estimate the directional wave spectra. In the proposed algorithm, the iterative calculations of the non-linear equations were optimized and the convergence was not achieved at every time step, but was achieved gradually over several time steps. In order to examine the reliability of the proposed method, real-time estimation was conducted by using the data of onboard experiments. Comparisons between the results of the proposed algorithm and a wave monitoring radar system show good agreements.
  • 津金 正典
    原稿種別: 本文
    2009 年 120 巻 p. 125-130
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    Ship masters always pay attention to the ship condition such as draft and trim, stability and ship hull strength to maintain the safe navigation. It is considered that the stability of container ship is not so severe problem due to the introduction of Over Panamax type. Otherwise too large G_0M value causes the problems of securing of on deck containers due to the short rolling period. On this study the author focused on the actual ship data and intended to examine the difference between Panamax type and Over Panamax type ships and also the difference between similar Over Panamax type ships. By the result of statistic analysis of actual ship data the difference of index of G_0M, trim and ship hull strength of both ship types were clarified.
  • 大澤 輝夫, 竹本 真大
    原稿種別: 本文
    2009 年 120 巻 p. 131-136
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    A real-time coastal sea surface wind forecasting system is developed and the system is automatically operated once a day for the eastern part of the Seto Inland Seas. The core part of the forecasting system is the mesoscale meteorological model MM5, which calculates 1.5km-resolution sea surface wind fields up to 2 days ahead. The performance is verified using in-situ wind measurements from a marine tower of Shirahama Oceanography Observatory. As a result, this system is found to have root mean square errors of less than 2.5m/s (just after initial time) to about 3m/s (48h ahead). These values correspond to 35 to 50% of the mean wind speed. If the error gets smaller with further improvements of the system in the future, this forecasting system will be able to play a large part in local weather routing.
  • 河合 雅司, 笹谷 敬二, 千葉 元, 西井 典子
    原稿種別: 本文
    2009 年 120 巻 p. 137-143
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    The Toyama Bay is a calm sea even if in winter, because it is pretected from the northwest winter monsoon and waves generated by the monsoon by the Noto Peninsula. On the other hand wave disasters occur due to swells on the coast of the Toyama Bay for the period from October to March. The swells are generated by winds due to developed low pressure stayed near Hokkaido in west sea area of Hokkaido, and propagate to the Toyama Bay. The swells which cause disasters in the Toyama Bay are called Yorimawari Waves. Yorimawari waves and invade Toyama Bay from the direction of north-northeast and northeast, deflecting to the right when they across the Tsushima Warm Current. Significant wave periods of the Yorimawari Waves are more than 10 seconds and Significant wave heights of them are more than one meter. The records of wave disasters on the coast of the Toyama Bay, the mechanism of generating the Yorimawari Waves, and preventive measures for wave disasters are investigated here, and the results are reported in this paper.
  • Krisana PUNAYANGKOOL, Kunihiro HAMADA, Kuniji KOSE
    原稿種別: 本文
    2009 年 120 巻 p. 145-155
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    Mekong River is an important river in Greater Mekong Subregion (GMS). To clarify the necessity of developing the Mekong River as a part of the transportation on GMS network, logistic simulation to forecast the demand of freight transport is required. However, detailed data for logistics simulation is not available. Therefore, purpose of this study is to develop the logistic simulation method for demand forecasting of GMS transportation network in consideration of the limitation of the available data and their reliability. Basic concept of this study is following points; 1) GMS area is expressed as a network model and a minimum cost flow model has been applied to find the route of cargo transportation. 2) Cargo volume between cities and the transportation cost on each route are estimated based on the available data. 3) Data used in the estimation is not defined as a fixed value but as an indeterminate one. 4) By using the law of the error propagation and the Monte Carlo simulation, influences of the errors are calculated quantitatively. By comparing the simulation results and the actual data, the validity of the proposed method is evaluated. Moreover, the robustness to develop the Mekong River is discussed by using the proposed simulation method. As a result, the route of Mekong River between Jinghong and Chiang Rai is an effective route to develop for freight transport in Greater Mekong Subregion area.
  • Nguyen Thanh Thuy, Etsuko Nishimura, Akio Imai
    原稿種別: 本文
    2009 年 120 巻 p. 157-164
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    The efficiency of a container transport system primarily depends on the ship scheduling, which is regarded as a complex dynamic application. Therefore, this paper is concerned to ship stowage problem while satisfying the ship safety in her voyage at a number of ports-of-call, which obviously determines the economic performance of the liner shipping companies. When the ship goes to multiple ports-of-call, the stowage problem has been considered at each port in her routine. The problem is formulated as a mixed integer programming and a heuristic is developed to solve it.
  • 三田 重雄, 庄司 邦昭, 山田 次郎, 田中 耕太郎
    原稿種別: 本文
    2009 年 120 巻 p. 165-174
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    The liquid transportation uses a tank container, recently a new method to transport the bag which filled with liquid with the container was carried out experimentally. But, bulge or strain of the wall which loaded with liquid bag onto a container are unidentified. In this study, the authors used the 20ft container and filled the bag with water and measured the deformation and strain of the wall. As a result, a state of the bulge of the side wall became clear. The bulge of the wall was equal to or less than 18mm at the center of the container and clear that it was the transformation of the tolerance level. In addition, change of the strain and the influence of the acceleration became almost clear, too.
  • 矢野 吉治, 古莊 雅生
    原稿種別: 本文
    2009 年 120 巻 p. 175-181
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    Training ship Fukae-maru, Kobe University graduate school of maritime sciences, went into service on October 14, 1987. Since then, she has been engaged in the maritime education and academic pursuits of the university for 21 years. Along with university integration on October 1, 2003 and national universities institutionalization on April 1, 2004, her social environment has changed greatly. In this situation, by enacting a new law of Japan concerning the ocean on April, 2007, the Japanese Government began to make efforts so that the general public might understand the maritime affairs and the ocean. It became a reexamine stage when the ideal way of further cooperation with local community and contribution to the society of Fukae-maru in addition to an original activity in Kobe University. Then, the authors investigated various activities and services of Fukae-maru for 4 years before and after the university integration to evaluate the possibility of her further activity and functions.
  • 畑 貴宇, 古莊 雅生, 藤本 昌志, 渕 真輝
    原稿種別: 本文
    2009 年 120 巻 p. 183-188
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    The rule 15 of INTERNATIONAL REGULATIONS FOR PREVENTING COLLISIONS AT SEA, 1972 provides for crossing situations. The rule 15 demands the vessel to give-way and the vessel to stand-on between two vessels without maneuvering performance. But the craft's maneuvering performance is better than vessel's one, and the craft is easier than the vessel to avoid collisions. This article is result to investigate the Marine Accident Inquiry Agencies judgment record, and analyze it to distribute collisions to vessel vs. vessel, vessel vs. craft, and craft vs. craft. As a result, number of collisions to vessel vs. craft is most. And number of collisions that craft doesn't avoid collisions by stand-on is also most. Therefore, the special provision to craft in crossing situations needs in Japan.
  • 藤原 紗衣子, 藤本 昌志, 渕 真輝, 古荘 雅生
    原稿種別: 本文
    2009 年 120 巻 p. 189-198
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
    We assume that, "The ordinary practice of seamen" means "knowledge, experience and habitual practice that seamen usually know naturally. "Our study seeks to compare the action of serving seamen and the action that the Marine Accidents Inquiry Agency (MAIA) recommends and then to verify the difference of "the ordinary practice of seamen" in both. We prepared a questionnaire modeled after an actual collision and investigated what action serving seamen would choose. A subsequent comparison revealed that our questionnaire results and the judgment of MAIA, had only 12% in common. It's clear that there is a major difference in understanding of "the ordinary practice of seamen" between MAIA and serving seamen. We think it's necessary to refer to the difference in order to investigate the causes of marine accidents and to prevent accidents.
  • 原稿種別: 付録等
    2009 年 120 巻 p. App3-
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
  • 原稿種別: 付録等
    2009 年 120 巻 p. App4-
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
  • 原稿種別: 付録等
    2009 年 120 巻 p. App5-
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
  • 原稿種別: 付録等
    2009 年 120 巻 p. App6-
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
  • 原稿種別: 表紙
    2009 年 120 巻 p. Cover2-
    発行日: 2009/03/25
    公開日: 2017/01/15
    ジャーナル フリー
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