日本航海学会論文集

表紙

原稿種別: 表紙
1987 年 77 巻 p. Cover1-
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.Cover1

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目次

原稿種別: 表紙
1987 年 77 巻 p. Cover2-
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.Cover2

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空コンテナ着地時の上下方向衝撃力の現地実験

久保雅義, 三木楯彦, 今井昭夫

原稿種別: 本文
1987 年 77 巻 p. 1-10
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.1

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Containers usually receive various types of impact forces on the way of distribution. Packaging of the container cargoes is designed to withstand these impacts. So it is important to obtain the exact impact load factors in distribution. Nevertheless, the studies are very few and the old data of impact load factors are not presented for various type of containers. As it is reported that containers receive strong impact at ship's loading, field experiments respecting the vertical impacts are carried out by using eight types of containers. Some interesting results are explained in this paper.

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シーマージンの統計的研究 I

石塚正則, 大津皓平

原稿種別: 本文
1987 年 77 巻 p. 11-20
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.11

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Ship's Seamargin are essential for ship's operator, owner and builder to obtain the optimal fleet, management and plan. In this paper, the authors tried to estimate the statistical structure of the every day data Power Seamargin in the Pacific southwest service container ship ship from her Abstract logbook. The model which is used in this paper, SEAMARGIN=Const.+(Aging effect)+(Fouling effect)+(Seasonal effect)+(Weather effect)+(Time series effect)+Noise The model is determined by the Minimum AIC Procedure. According to such an analysis, the following results are gained, namely, 1) The aging effect which can not recover even after a dock repairing, is estimated to be 4.2% (per year). 2) but the fouling effect which can recover after it, to be 0.8% (per year) of which value is small comparing with that of the data in the Persian Gulf. 3) The seasonal effect is estimated to obtain a strong one in winter season.

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海難時における救命設備の有効性に関する調査解析-I : データベースの構築とその解析

樋富和夫, 宮田修, 長田修

原稿種別: 本文
1987 年 77 巻 p. 21-32
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.21

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The crew possibly have the chance to be obliged to escape from ship by a shipwreck. Then, they will find themselves in the sea water where they must stay afloat until rescued. Sometimes, they may lose their lives on the sea. In order to keep safety of life and investigate effective use of lifesaving appliances, the database on shipping casualty are developed and analyzed by some statistical method. Ploblems such as how to collect and process basic data, and how to analyze the stored data by computer systems, are reported in the present paper.

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岸壁前面における三次元浮体の流体力係数の周波数特性について

久保雅義, 岡本俊策

原稿種別: 本文
1987 年 77 巻 p. 33-46
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.33

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Recently, the time domain analysis with the retardation functions becomes important in the research of moored ship motions. The hydrodynamic coefficients are required in the whole range of the frequency to calculate the retardation functions. There are few examples of the three dimensional floating body moored along a quay wall, and moreover those calculations are not satisfactory. In this paper, the calculation methods are proposed to improve the accuracy of the hydrodynamic coefficients and the retardation functions.

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切断時の索の挙動についての基礎実験-II

磯崎道利, 久々宮久

原稿種別: 本文
1987 年 77 巻 p. 47-55
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.47

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There are many works of handling ropes on board. And it is very dangerous to handle ropes when they are stretched tightly, because if they are to be cut, they fly rapidly towards the other point where the rope has been tied and are apt to cause the serious disaster. But the motions of these ropes have not thoroughly clarified yet. We studied the phenomena using high speed photography. The camera can catch the motions every 2.5ms and we arranged the mirror to be able to get the phenomena in the vertical plane as well as in the horizontal one. The summary of the results are as follows: (1) Each area, which is to be drawn connecting maximum horizontal deviation of a flying rope, has a particular character defined by its twist. (2) Deviation, from where the rope is originally fastened, does not depend on the length of rope. (3) Relation between the shape of flying rope and its speed is clarified. (4) Flying speed of a broken rope depends on its potential energy and can be estimated by its tension given prior to the snap.

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海底堆積物からみた錨効きについて-II : 伊勢湾および渥美湾

鈴木常夫, 佐藤治夫

原稿種別: 本文
1987 年 77 巻 p. 57-68
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.57

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The authors investigated the submarine deposits in both Ise Bay and Atsumi Bay to find out the relation between the nature of the deposits and the holding power of an anchor. As a result, it was found that the holding power relates to the grain size of the deposits and that it increases as the deposit grain becomes coarser. When the grain size of the deposit was represented by three kinds of factors, i.e. mud content, Mdφ and Mφ, it was found that the correlation coefficients to the holding power (Eq.s (1), (3) and (4) in this report) were almost the same for each factor. Therefore any one of the above factors may be used as the criterion for the holding power of an anchor. It is considered, however, that it is unbiased to employ either Mdφ or Mφ, each of which fully takes into account the grain diameter, instead of the mud content. Fig.7 shows the holding power of an anchor expressed in terms of Mdφ in both bays. Collating these results with the sea chart, we can see that the points with bottom-material-notations of "S" or "S.G" give the good holding power. However, it should be noted here, that when the anchor flukes face upward the holding power decreases as the deposit grain becomes coarser, contrary to the above. (Refer to Fig.7.) In addition, when the holding power of an anchor is evaluated based on the grain size, the locality characteristics varying depending on the depositing circumstances should be examined for each bay, because it is considered that they also affect the holding power.

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船舶運動制御システムの改善に関する一考察

今津隼馬, 小山健夫

原稿種別: 本文
1987 年 77 巻 p. 69-75
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.69

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It is necessary to study about appropriate ship manoeuvring system, which are the manoeuvrability of ship and the shipboard manoeuvring data for a safety navigation. First, the safety navigation system as composed of ship, environment and navigator, was defined. And the ship manoeuvring system was located as a part of this system. Next, the problems of a ship manoeuvring system which has encountered with accident, were examined by shipping casualty data analysis. Consequently, some improvements of a ship manoeuvring system were presented.

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自由表面による慣性航法-VII : FS方式のストラップダウン化(2)

成田正

原稿種別: 本文
1987 年 77 巻 p. 77-89
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.77

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This is a continuation to the preceding report VI, and treats the following three items: (1) Theory of the type I (1SD) mechanization. (2) Theory of the type IN (SD) mechanization. (3) Theory of sign monitoring of a^n_x (the east-west component of specific force vector α). Items (1) and (2) involve the methods of calculating the geographic coordinates, and item (3) is related to all three mechanizations hitherto described, namely, those of types NS (SD), I (1SD) and IN (SD).

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2軸アンテナ駆動装置を用いた船舶用簡易衛星放送受信装置

真田清宏, 安東平一郎, 金居康文

原稿種別: 本文
1987 年 77 巻 p. 91-101
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.91

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For developing a low-cost and simple reception system of satellite-broadcasting on board, an antenna tracking mechanism using a two-axis rotator is desired. On board of the Training Ship "Hokutomaru" (of Institute for Sea Training of Japan) cruising around Honshu and to Ishigaki Island, some receiving tests were carried out and the results are shown as follows. a) Around Ishigaki Island, good television pictures were received by a parabolic antenna of 75cm in diameter on condition of no precipitation, while it has been said that a larger size antenna is required. b) Around Honshu and near-by Okinawa Islands, the present tracking system worked successfully on moderate sea conditions up to rough sea. The results suggest following parameters to design low-cost reception systems. a) A parabolic antenna of 75cm in diameter is recommended practically for ships cruising around Japan proper. b) Two-axis tracking mechanism may be applied, which is able to rotate the antenna faster than 10deg/s. c) On the worse sea conditions than rough sea, hybrid tracking algorithm should be studied, combining informations given by a simple rolling-and-pitching sensor and AGC level of a receiver.

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位置通報点上の航空交通の水平重畳確率

長岡栄

原稿種別: 本文
1987 年 77 巻 p. 103-113
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.103

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A mathematical collision risk model is available for evaluating the safety of air route systems. The model requires several parameters associated with navigational accuracies of aircraft. This paper estimates the probability of lateral overlap of pairs of proximate aircraft, which is one of the key parameters of the model, or a given lateral separation minimum. The method of estimation is based on the interpolation of a fitted curve to the empirical distribution of relative lateral distance (=the difference between lateral deviations of a pair of aircrft) obtained by a height finding radar. The curves are determined by using the minimum AIC (Akaike Information Criterion) estimation techniques for several probability density function (pdf) models. The results of analyses show that the pdf of relative lateral distances may be approximated by a family of the double-double exponential (DDE) distribution. The estimated probability of lateral overlap for the same assigned route, Py(0), is 3.00×10^<-2> under observational conditions.

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海上交通調査におけるレーダ利用方法の改善について

佐藤尚登, 田中稔, 原潔

原稿種別: 本文
1987 年 77 巻 p. 115-123
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.115

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Authors improved the marine traffic survey system using radar and developed an automatic processing system using ARPA (Automatic Radar Plotting Aids) for analysis of marine traffic. These systems provide a hard copy of an image on a radar PPI on real time at an arbitrary time interval and semi-automatically analyze a marine traffic situation. The proposed traffic survey system consists of a color radar, a video printer and modulate and demodulate equipments to record raw radar signals into VTR. The automatic processing system consists of a personal computer and ARPA linked with the survey system. These systems were applied to the marine traffic survey in Akashi channel in order to realize its validity. Then there were much improvement on increasing the accuracy of observed data and significantly reducing working time on the steps of the analysis comparing with the conventional way. The data in a personal computer linked with ARPA make us easy to analyze the marine traffic from various points of view.

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実船調査による避航時のレーダ写真解析

有村信夫, 山田一成, 塩田重須, 大谷浩二

原稿種別: 本文
1987 年 77 巻 p. 125-132
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.125

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A Ship survey was made on evasive actions and mental load on board the Seiunmaru aiming to decrease the load at evasive action in congested waterways. Here, analysis is made on the relation of the Collision Judgement Index and human reactions, the former having been proposed by Kobayashi and Endo. It gives results as following: (1) The upper limit of the Collision Judgement Index at starting time of evasive action is approximately equal to 100 (×10^<-4>) and most of DCPA is less than 500m (=5L, L*ship length). Almost all evasive action are finished before TCPA reaches 2 minutes which roughly corresponds to 7L. (2) The frequency of heart pulse increases by 26±5% from the ordinary value which indicates increase of mental load. Above consideration leads a proposal to display an equialtitude map which enables quick look of the Collision Judgement Index.

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船舶航行エキスパートシステムの基礎研究 : 衝突回避エキスパートシステム

鶴田三郎, 松村尚志, 稲石正明, 今津隼馬, 杉崎昭生

原稿種別: 本文
1987 年 77 巻 p. 133-139
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.133

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This report is concerned with an Expert System for Collision Avoidance, as one sub system of an Expert System for Navigation at sea, while an expert system for coping with collision accident was developed as one of the sub system last year, in 1986. In this report, the authors have dealt with the collision avoidance facility in order to generalize the system. The purpose of this system is to provide a captain or a navigator with consultative advices to avoid collision. Two methods to represent the risk level of collision are used; one is the method by the rule-of-thumb and the rule of the Regulations for Preventing Collision at Sea, and the other is the method using the value of TCPA and DCPA. The results of experimental simulations of this system may be summarized as follows. (1) Actions shown by this system to avoid collision agreed approximately with the rule-of-thumb. (2) The time required for one series of inference and display is about 20 seconds per one target.

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インドネシア商船大学生の海洋志向性-I : イメージ調査に対する方法論的吟味

吉田光雄, 黒田隆, 大西典一

原稿種別: 本文
1987 年 77 巻 p. 141-149
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.141

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Methodological examination was made about the results of image surveys by SD (semantic differential) method concerning homogeneity of items and groups. The neutral category of "neither" was examined whether its observed frequency was larger than the expected, obtained by fitting logistic curve on cumulative frequencies. As to groups, three parameters or moments of their distributions, variance, skewness and kurtosis, were calculated to compare response patterns. The Indonesian samples showed almost the same factor structure as those of Japan after procrustes rotation.

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海難審判庁裁決録関係データベース化の基礎研究

松村尚志, 杉崎昭生

原稿種別: 本文
1987 年 77 巻 p. 151-161
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.151

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The Report of Judgement on Marine Accident Inquiry Agency is indispensable for investigating the disasters which occurred at sea and is plenty of contents in each case. For effective and efficient use of The Report, the authors have discussed that an introduction of Relational Database System is an adequate method. The Database System is written in Prolog on the personal-computers, and consists of knowledge base, explanation, retrieval and interfaces. According to the operation of system in using about 400 cases, it is said that the users will be probably lightened of their researching materials at this system.

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省エネルギーのための最適トリムに関する研究

津金正典, 小林弘明

原稿種別: 本文
1987 年 77 巻 p. 163-173
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.163

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The influence of trim over a ship's propulsion is an unsolved question. Ship operators have often tried to define what it is, but no satisfactory answer to the question has ever been proposed. In order to pin down this influence, authors conducted various tests through two types of model ship (CTNR and PCC) and obtained the following facts, with which a system of finding optimum trim was developed. (1) The influence was recognized. (2) The influence depends on ship's design, displacement and speed; then the optimum trim exists according to operation conditions of each ship. (3) With CTNR ships in light condition, trim by the head saves more fuel oil than that by the stern. (4) Model tests and actual ships tests are very effective in this study. The thanks of the authors are particularly due to the twenty one captains for their statistical reports that proved useful in the preparation of this study.

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可変ピッチ・プロペラ装備船の操縦性能に関する研究

田中清隆, 豊水洋一, 小林弘明

原稿種別: 本文
1987 年 77 巻 p. 175-183
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.175

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The paper deals with the change of maneuverability of the ship with C.P.P. (Controllable Pitch Propeller) reducing to low speed. On a experiment method, Series-60 model ship with C.P.P. was used and sway force and yaw moment etc. induced on the hull & rudder were measured in condition of steady-state for propeller pitch angle 20°, 10°, 5°& 0°. It is confirmed from experiment that decreasing propeller pitch angle, yaw damping force acts on aft point of sway damping force and the ship is in unstable condition. And authors proposed the method of maneuverability that the ship reduced to low speed under keeping course stability.

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北部パプアニューギニアにおける伝統的カヌーの構造的特徴

松岡達郎

原稿種別: 本文
1987 年 77 巻 p. 185-197
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.185

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南太平洋島諸国では,今日でも伝統的カヌーが幅広く用いられており,これを沿岸漁業開発に利用しようという動きがある。本研究は伝統的カヌーの近代的漁業への適応性について評価することを目的とする。本論は特に,野外調査とカヌーの構造的特徴について述べる。調査は,1985年,北部パプアニューギニアで行った。合計87隻のカヌーを記録し,その内6ヶ村,8隻のカヌーについて船型測定を行った。これに基づき船体線図,一般配置図を作製し主要目,載荷量等を分析した。調査地域のカヌーは2型式に分類される。つまり,片舷にアウトリガーを持つものと,主船体単独のものである。当地域では前者が一般的で,後者はセピック川流域にのみ見られた。細部構造については地域的変異が非常に大きい。カヌーは,平面形が大きく自重が小さいが,載荷量はわずか200kg程度と小さい。主船体の深さ,乾舷も一般に小さい。伝統的構造の中では特に,アウトリガー,ブーム,主船体の結合部が弱点である。観察された廃棄カヌーは,大半この部分の破損によるものであった。アウトリガーと主船体間の距離の大きさが,斜め波中でさらにこの弱点を悪化させる可能性がある。今回の調査で観察されたカヌーは,載荷量も小さく近代的沿岸漁業には不向きであり,利用は限られたものになろう。船齢は短く,一隻の建造にかかる低コストも大きな利点とは言えないかも知れない。

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津軽海峡中央部の海潮流予測と船舶の定時運航

勝木敏秀

原稿種別: 本文
1987 年 77 巻 p. 199-208
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.199

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Navigation of the Seikan Renrakusen, other ferries and general vessels has been susceptible to the complicated oceanic and tidal currents which are caused by the Tsugaru Warm Current, a branch of Tsushima Warm Current, flowing in to the strait. Meanwhile, the estimated velocities by Ogura's method which has been so far used for the currents in this strait are very different from the observed one. So, a new method using C.A.S (Collision Avoidance System) were tried and got the good results for the estimation of currents at real time. With this results, the efficient diagram of navigation for ferrey service based on the adjustment of ship's velocity according to the current in main path are devised. Efficient use of this diagram enables us to accurately forecast the pass time at each point in the Tsugaru Strait between Aomori and Hakodate. A new method for the estimation of currents and a usage of the diagram are presented in this paper.

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論文集掲載審査用論文執筆要領

原稿種別: 付録等
1987 年 77 巻 p. App1-
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.App1

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論文審査内規抜粋

原稿種別: 付録等
1987 年 77 巻 p. App2-
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.App2

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論文審査内規申し合わせ事項

原稿種別: 付録等
1987 年 77 巻 p. App3-
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.App3

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講演審査用アブストラクト執筆要領

原稿種別: 付録等
1987 年 77 巻 p. App4-
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.App4

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奥付

原稿種別: 付録等
1987 年 77 巻 p. App5-
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.App5

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裏表紙

原稿種別: 表紙
1987 年 77 巻 p. Cover3-
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.Cover3

ジャーナルフリー

PDF形式でダウンロード (74K)
CONTENTS

原稿種別: 表紙
1987 年 77 巻 p. Cover4-
発行日: 1987/09/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.77.Cover4

ジャーナルフリー

PDF形式でダウンロード (74K)

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