日本航海学会論文集

表紙

原稿種別: 表紙
1982 年 67 巻 p. Cover1-
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.Cover1

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目次

原稿種別: 表紙
1982 年 67 巻 p. Cover2-
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.Cover2

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波浪中における沿岸漁船の動揺について-I : 波浪およびロール・ピッチの解析

高島末夫, 浜口正人, 本間辰太郎

原稿種別: 本文
1982 年 67 巻 p. 1-9
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.1

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In order to examine the motions of inshore fishing boat in waves, the seakeeping experiments were carried out under three conditions in displacement of the boat, at varying speeds, heading angles and various sea conditions. The roll and pitch angles were obtained using a vertical gyro and the waves were measured using a Ultrasonic wave meter by stopping the boat at anchor. And these recorded data were digitised at 1.0 second intervals and analysed by means of statistical analysis and spectral analysis. From these experiments, we obtained the following results. (1) The wave heights of a record and double amplitude of roll and pitch angles were found to follow nealy Rayleigh distribution. (2) The values of the bandwidth parameter, ε_s, obtained by spectral analysis, lies in the range ε_s=0.34 to ε_s=0.94 for roll angles and in the range ε_s=0.40 to ε_s=0.90 for pitch angles under various boat and sea conditions.

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各種曳航索の流体的特性について

佐藤要, 宮崎芳夫

原稿種別: 本文
1982 年 67 巻 p. 11-20
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.11

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1. In this experiment, towing and mooring materials were tested in a circulating water channel, and the drag D_θ and lift L_θ were measured at each inclination angle θ coupled with attack angle δ. 2. The results are as follows; [table] 3. Different hydrodynamic characteristics were observed between the right and left handed ropes during sea trials, but in experiments conducted in a circulating water channel only the existance of a stream was observed around the strands of rope when measurements were made using the Tuft surface method. The side force existed by water on the rope could not be measured.

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静止把駐力を越える力が加わった場合の錨の挙動について

鶴田三郎, 小山荒雄, 鞠谷宏士

原稿種別: 本文
1982 年 67 巻 p. 21-26
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.21

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We have already reported about the effect of JIS stockless anchor. In that report, we have pointed out that the coefficient of speed is proportional to the dragging speed, if the force is less than about two times the magnitude of maximum holding pull. Hence, in the extent of the force that this relationship is found, we tried the experiments for clarify the behavior of the anchor when that force is applied periodically to it. On the other hand, we calculate on the same conditions, and compare the results of calculation with those of experiment. The results are in approximate agreement with experiment. In this paper we deal with these in detail.

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模型実験による衝突船の挙動と衝突荷重

翁長一彦, 小黒英男

原稿種別: 本文
1982 年 67 巻 p. 27-34
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.27

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This report describes colliding tests with free floating model ships. The two ship models, referred to as the struck ship and the striking ship were used to the tests for the movement of colliding ships. The shock responses for ship models were measured using boxtype ship model with two load cells. The positions of ship models obtained by the position analyzer with VIDEO camera, and the camera was set on the tower which is about twenty meters height above water surface. The results of experiment were as follows; (1) The additional mass due to water with the struck ship was proved 0.4 times its ship's mass for a few second after collision. (2) When the colliding ship collided with midship of the struck ship, the ship was moved in parallel with the position before the shock after collision, and this state is indepedent of colliding angles. At the collision to other points, the struck ship was horizontally rotated for the center of gravity, and it was varied parallel movement after a short times. (3) The calculating values of the equations from the conservation of momentum agreed with experimental values.

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高速艇における繰返し衝撃,振動の人間工学的評価法(最終報告)

神田寛, 村山義夫, 田中正人, 鈴木潔

原稿種別: 本文
1982 年 67 巻 p. 35-44
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.35

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本研究は,脊柱の傷害にかかわるDRIとその発生回数が,脊椎の変形または腰痛多発とどのような関係にあるかを明らかにしている。X線検査による,第11胸椎から第5腰椎に至る,乗組員の椎体変形の程度は,重作業と中等度作業の中間に当たる陸上の筋肉労働者のそれに匹敵する。さらに第12胸椎と第1腰椎を中心とした脊柱の屈曲位置の近くに,楔状椎が多くみられた。DRIは椎体にかかる繰返し圧迫荷重の大きさを表わす指数である。航走中の高速艇において,種々の条件でのDRIの変化と0.5の値をこえるDRIの発生回数が得られた。これらの事実をもとにして,繰返し衝撃,振動のDRIによる暫定的許容基準とその他の若干の腰痛予防対策を提供している。

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船槽外放出ガスの挙動-I

村山義夫, タヌジャヤ W, 西山安武

原稿種別: 本文
1982 年 67 巻 p. 45-50
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.45

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The movement of atmospheric gas emitted from oil tanker originated in water ballasting and cargo loading, will be affected strongly due to causative elements-wind, emtting gas velocity, difference of density between gas and air, freebcard and super structure of ship and other environmental conditions. In this connection, the authors tried to study about the corelations between the extention of gas explosive zone and several elements above stated by model test using propane gas, making use of wind tunnel with water tank. A summary of the results is shown as follows: (1) In case of high wind speed and small freeboard of ship, maximum density on the sea surface were similar to the calculated results by Sutton's solution. But in case of high wind speed and large freeboard of ship, they foot up to 8〜10 times of theoretical values. (2) In case of low wind speed, they foot up to 5〜9 times of theoretical values. And the highest of them was 0.31% when wind speed was 0.45m/sec.

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Hay-Cubeづめコンテナ内の汗ぬれ防止-III

今枝彬郎, 木村隆一, 久保雅義

原稿種別: 本文
1982 年 67 巻 p. 51-58
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.51

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Many sweat damages were reported to have arisen due to solar radiation, during the bulk hay cube in dry container are in transit. Therefore it is important to know the distribution of temperature and humidity in the container. We carried out the experiment on the 1/3 model container, and measured the temperature and humidity. The top plate of model container was heated by the infrared bulb, and the way of heating was the periodic change whose range was from 73℃ to 24℃. The changes of temperature and humidity were discussed by the use of data obtained from the expeiment on the model container and the solution of simultaneous equations of heat and moisture, basing on one dimensional theory. The calculated values of temperature and humidity were in good agreement with the experimental ones. Using this simulation program, the calculation was made for the case when the adiabatic board was placed underneath the top plate of container. As the result, the board was found effective for the protection of sweat damage of cargo.

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タンカーの揚荷役中の漏油事故についての解析

諸熊秀一郎, 久々宮久

原稿種別: 本文
1982 年 67 巻 p. 59-67
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.59

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It is well known to all that Fault Tree Analysis technique is very useful to study the cause and effect chain of events, to estimate the probability of the occurrence of the top event, and to find out what are the essential points to prevent the outbreak of the top event. The authors have tried to apply this technique to approach the problem of what are the principal patterns of the cargo-oil spilling accidents from a VLCC when she is unloading, what is the probability of the occurrence of the spilling, and how they can minimize it. Under several premises; e.g., she loads only one kind of crude oil, she unloads all the cargo at one port, she is fitted with a COW system, the duration of unloading is 40 hours, and so on-the probability of the cargo-oil spilling is 6.5×10^<-3>. To reduce this probability, it is the most effective to reduce the cargo-oil leakage onto her upper deck.

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港湾・船舶系の設計,管理の最適化に関する考察

山田猛敏

原稿種別: 本文
1982 年 67 巻 p. 69-80
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.69

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一国の貿易量はその国の港湾能力を超えることはないといわれているように,港湾計画においての適切なる規模の決定および管理,運営は国家貿易経済活動上から重要なことである。また同時に海陸輸送の物流拠点として国民福祉,流通経済上からもインフラストラクチャーの活動として重要なことである。本研究においては港湾を物流施設とみて,さらにこれを利用する船舶,貨物を含めた一つの待ち行列システム(港湾・船舶系)としてとらえ,まずこの系における利用者(船舶など)の到着や係岸荷役サービスの時間的分布特性をコントロールしたり,バース数をコントロールすることによる待ち損失時間の減少効果の程度を考察してみた。つぎに在来型港湾・船舶系(ランダム到着,k=6のアーランサービスに限定,本船の荷役装置使用)内の貨物流動に伴なう物的流通原価Physical Distribution Cost(沿岸荷役,本船荷役,上屋施設,岸壁施設,在港本船,船舶雑費および在港貨物金利の各コストの合計)の最小化基準を用いて,施設規模計画,運営状況(最適な取扱貨物量,バース数,バース能力,バース利用率など)のシステムズアナリシスをおこないつぎのことがらを得た。(1)到着時間間隔を規則化してゆくとランダム到着システムにくらべて待ち時間を50%以下に減らし得る。(2)係岸荷役サービス時間を規則化してゆくとランダムサービスシステムにくらべて待ち時間を50%まで減らし得る。(3)到着時間間隔と係岸荷役サービス時間の両方を同時に同程度の規則化をしてゆくと,ランダム到着,ランダムサービスシステムにくらべて待ち時間を20%以下に,ひいては皆無まで減らし得る。(4)単独バースの分離利用方式よりも複数バースの並列グループ利用方式の方がバース当りの能力が向上する。(5)最適な運営としてバース利用率は49〜79%(1〜16バースの場合)が望ましい。(6)本船荷役能力が向上するとバース当り能力が向上し,系のコストも低下し同一年間貨物量に対する設置バース数は少なくてすむ。(7)系のコスト中で二大要素は船舶費とバース施設費であり,これらのトレードオフ関係により最適規模が決定される。またさらに別の見方によると港湾荷役装置の最適能力決定は船舶費と港湾荷役装置費の相対比に依存し,船舶費が相対的に高いときは荷役能力を大きくし,また逆に港湾荷役装置費が相対的に高いときは荷役能力を小さく決定しなければならない。

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船と固定物との衝突事故の要因

久々宮久, 原田統彦

原稿種別: 本文
1982 年 67 巻 p. 81-91
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.81

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Last year we published an analysis of the ship groundings using the records of the marine courts in Japan. We took up the cases of grounding accidents because we presumed that any case of grounding was the result of maneuvering of the ship itself involved in the misfortune, and that its analysis might be easier than the cases of mutual collision or any other accidents. From the same point of view, we have this time chosen the collidings against standing objects from the records of the marine courts, and gathered 124 cases. We prepared a special table to digitalize the contents of the each record. This table consists of 51 items ("variables"). Finally we used 79 cases out of 124 to calculate the correlation matrix, and to this matrix we applied the factor analysis technique. We have found out from four different combinations of the variables that each combination produced the same kind of factors related to the judgement of the officer on duty when the misfortune occurred.

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海上交通実態調査法の改善について

井上欣三, 原潔, 田中宏

原稿種別: 本文
1982 年 67 巻 p. 93-99
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.93

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There are still much manual works during the process from collecting marine traffic data to their analyses. Authors applied a personal computer, a daylight radar and the techniques of graphical processing to marine traffic survey in order to reduce the manual works. The following results were obtained. (1) The application of a personal computer to the marine traffic observation is much effective on the simplification of the collection of traffic data. (2) The system combined with the daylight radar and the video tape recorder fairly reduced the time for the analysis of ship's paths. (3) The improvement of the graphical processing techniques using personal computer showed the possibility of the automatic analysis of ship's paths.

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日本沿岸における内航商船の交通量推定とその解析

岡野良成, 巻島勉

原稿種別: 本文
1982 年 67 巻 p. 101-108
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.101

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K. Hara published the method to estimate the shipping flow between ports (The Journal of the Nautical Society of Japan, No. 52, 1974). The authors tried to use the method for all the Japanese ports. But it ended up with the results that the estimation is greatly different from the fact of the research on the coastal shipping flow performed by the Marine Safety Agency. Therefore the authors proposed the modified method in this paper. In the former method, wij-to be understood as the factor determining the degree of the relationship between port i and j-is 0(i=j) or 1(i&bne;j). But in the modified method, it is determined by the two independent parameters, the one is rij: the distance between port i and j, the other is qij: the quantity of cargoes carried between those ports. The results of the estimation using the modified method are well fit with the various facts as the first approximation. For example, the number of coastal ships except fishing boats and car ferries which are at sea in a moment is about 3500.

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ロランCの陸上伝搬速度による補正とその効果について-III : 9970チェーンと5970チェーンの比較

斎藤清隆, 濱田悦之, 春日功, 栗田嘉宥, 喜多澤彰

原稿種別: 本文
1982 年 67 巻 p. 109-114
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.109

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We can receive 9970 chain and 5970 chain of Loran-C off the Japan's Islands. This paper describes about the comparison of fixed positions between 9970 chain and 5970 chain, in the area of south coast of Honshu and a part of East China Sea, and the effect of correction for use of propagation velocity of these chains.

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上下振動に伴う磁気コンパスカードの運動

白井靖幸, 鈴木裕

原稿種別: 本文
1982 年 67 巻 p. 115-118
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.115

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Vertical shock of the directional system of a magnetic compass was measured by non-contact displacement meter while being given vertical vibration up to 35Hz. Up and down shock of the cap of directional systems causes the increase of the error due to friction between the cap and the pivot with their deformation. The result shows that the directional system moves off the pivot and goes down to the pivot making a strike if the given vibration frequency is over a frequency. If the frequency becomes higher than that one, the directional system get afloat, lays down on the pivot and these are repeated. Two methods to prevent this movement were taken in our experiment. Comparatively heavy supporting force and hollowing out the card resulted a good stability of the card on its pivot up to about 35Hz in R165 type compasses.

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オメガと推測航法によるハイブリッド航法の実測データによる評価

矢吹英雄, 阿部真治, 田中 [エイ]一, 西周次

原稿種別: 本文
1982 年 67 巻 p. 119-125
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.119

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The Navy Navigation Satellite System has global coverage and high position fix accuracy but has restricted user time. Previously, we had proposed the Omega/Dead Reckoning hybrid navigation system in order to back up the NNSS navigation. This time, we evaluated the accuracies of the above hybrid navigation system by means of on-board data. Results of the evaluation show that 50% improvement in accuracy (RMS value) is attained with the proposed navigation system, compared with Omega navigation. Furthermore, in this hybrid navigation system, the fixed error of the Omega navigation occured by the Lane Slip and incorrectness of the PPC tables is mostly compensated. These results show that this hybrid navigation system is useful to back up the NNSS navigation.

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舶用レーダを利用した波浪解析の一方法

井上篤次郎, 加藤雅司

原稿種別: 本文
1982 年 67 巻 p. 127-135
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.127

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As well known, sea clutter noise is appeared on a radar PPI scope. This clutter is considered containing the signal of wave informations. Although some wave analysis methods using the sea echo have been proposed, a new system, in which sea echo signal of analogue/digital conversion are applied to determine a wave direction and length after two dimensional Fourier transforms, is presented. This time, simulating data taken from PPI image pictures instead of real radar signal are analyzed. The results are satisfactorily on wave direction and length, and the system could be worked for real use after solving several problems.

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波浪予測精度を考慮して航海時間の誤差を見積る一方法

萩原秀樹

原稿種別: 本文
1982 年 67 巻 p. 137-147
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.137

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It is very useful for planning the ship's operation schedule if the error of time enroute can be estimated at the departure time. This paper presents a simple method to estimate the error of time enroute at that time. Considering the accuracy of wave prediction and ship's performance curve, the standard deviation of ship's speed is predicted at each point on the given route. Using those standard deviations, the Error Index which is the parameter representing the range of error in time enroute is calculated by recursive equations. To investigate the efficiency of proposed method, numerical simulations are performed. From the result of simulation, it is found that the Error Index is highly correlated with the mean error of time enroute and it is useful to estimate the error of time enroute.

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冬季北太平洋におけるウェザールーティング : 海象特性と予測指標

須田建, 巻島勉, 堀籠教夫, 桑島進, 大津皓平, 萩原秀樹

原稿種別: 本文
1982 年 67 巻 p. 149-154
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.149

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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.

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論文審査内規抜粋

原稿種別: 付録等
1982 年 67 巻 p. App1-
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.App1

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論文審査内規申し合わせ事項

原稿種別: 付録等
1982 年 67 巻 p. App2-
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.App2

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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
1982 年 67 巻 p. App3-
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.App3

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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
1982 年 67 巻 p. App4-
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.App4

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奥付

原稿種別: 付録等
1982 年 67 巻 p. App5-
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.App5

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裏表紙

原稿種別: 表紙
1982 年 67 巻 p. Cover3-
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.Cover3

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CONTENTS

原稿種別: 表紙
1982 年 67 巻 p. Cover4-
発行日: 1982/08/25
公開日: 2017/01/15

DOIhttps://doi.org/10.9749/jin.67.Cover4

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