著者

黒田 貴子 原 正一 松田 秋彦

出版者

公益社団法人 日本船舶海洋工学会

雑誌

日本船舶海洋工学会論文集 (ISSN:18803717)

巻号頁・発行日

vol.6, pp.339-345, 2007 (Released:2008-03-18)

参考文献数

8

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In order to make a plan of ship towing, it is necessary to investigate the towing performance of the tow ship, status of the towed ship, external force acting on the towed ship and sea conditions. The factors of the towing performance are derived from the towing gear and main engine power, which are evaluated by the bollard pull test in the case of the tugboat. When the general ship instead of the tugboat makes a towing operation, the towing performance with the main engine power is crucial. It is important to know the towing performance of the tow ship and tow force depending on the size of towed ships in several sea states in the emergency towing by the general ship.The bollard pull test and towing test in calm and rough seas have been carried out to investigate the tow force and tow power, critical tow force and the condition of safe towing. The towing safety factor is defined by the critical tow force divided by the maximum towline tension during towing. The factor less than 1 indicates the disability of towing. The critical condition is shown by the value between 1 and 2. Lastly its value larger than 2 indicates the safe towing. The towline tension is calculated by the Optimum Towing Support System developed by the National Maritime Research Institute. In this calculation, the patrol vessel as tow ship tows 5kinds of ships in several sea states. By using the ratio of critical tow force and calculated towline tension, the towing safety factor is estimated and the chart for the critical towing performance in several sea states using the displacement ratio between tow and towed ship has been shown. Even the operator of the general ship will be able to know the possibility of the safe emergency towing using the displacement of the towed ship in certain weather condition in this chart.

著者

黒田 貴子 大橋 訓英 原口 富博

出版者

社団法人 日本船舶海洋工学会

雑誌

日本船舶海洋工学会論文集 (ISSN:18803717)

巻号頁・発行日

vol.18, pp.39-44, 2013 (Released:2014-03-06)

参考文献数

9

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The vessels with waterjet propulsion system increase with the rapid growth in numbers of high speed vessels. It has been increasing when waterjet vessels do towing work. However, the towing performance of waterjet vessels has not been researched clearly.The purpose of this study is to investigate the towing performance of waterjet vessels. Bollard pull test and 2 ways towing tests which are towing ahead and astern were carried out by using the patrol vessels with waterjet of Japan Coast Guard. In general, a standard tow force of propeller vessels is 1.0tf/100PS. However, it was found from the test results that tow force of waterjet vessels is almost half of propeller's one. The cause of drop of towing performance for waterjet is the flow separations at the inlet's lip part.Since the numbers of impeller rotations becomes high to the low ship speed during bollard pull and towing, and the inlet velocity ratio (IVR) which means the inlet velocity to the momentum velocity becomes 1.0 or more. Duct flow of flash type inlet on bollard pull and towing were computed by flow solver "SURF"developed by National Maritime Research Institute. On the basis of those computed results, the loss due to the waterjet duct and the head of propeller and waterjet were evaluated and were compared with the towing test data. Comparison of computed results with test data shows good agreement. The results indicate that towing performance of waterjet can be estimated by evaluating the loss due to the waterjet duct.

著者

黒田 貴子 原 正一 松田 秋彦

出版者

公益社団法人 日本船舶海洋工学会

雑誌

日本船舶海洋工学会講演会論文集 5E (ISSN:24241628)

巻号頁・発行日

pp.121-122, 2007 (Released:2017-12-28)

著者

黒田 貴子 池田 良穂

出版者

社団法人 日本船舶海洋工学会

雑誌

関西造船協会論文集 (ISSN:13467727)

巻号頁・発行日

vol.2001, no.236, pp.175-180, 2001-09-25 (Released:2017-09-06)

被引用文献数

2

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In the design process of a passenger ship, ship owners try to improve the seakeeping quality of a ship by changing ship hull shape and size, or by installing additional anti-motion apparatuses, like a fin stabilizer, an anti-rolling tank, a ride control system or an anti-pitching fin. Such improvements usually coat the ship owners. They consider the merit and the demerit of each choice carefully, and then decide which way is the best one from the point of view of operation and economics. In this paper, an evaluation method of seakeeping quality from the economical point of view is proposed. The method is divided into three parts ; prediction of ship motions in waves, prediction of vomiting ratio of MSI(Motion Sickness Incidence)of passengers on the ship, and prediction of increases of share of demand for the ship due to improvement of the vomiting ratio. The evaluation method is applied to two domestic routes in Japan.

著者

志茂 新 大井 涼子 黒田 貴子 小島 聖子 永澤 慧 岩重 玲子 志茂 彩華 土屋 恭子 上島 知子 白 英 川本 久紀 津川 浩一郎

出版者

日本乳癌検診学会

雑誌

日本乳癌検診学会誌 = Journal of Japan Association of Breast Cancer Screening (ISSN:09180729)

巻号頁・発行日

vol.22, no.2, pp.250-254, 2013-07-20

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現在,乳癌検診はピンクリボン運動やメディアの影響もあり,検診の中でも普及しつつある分野ではあるが,実際カテゴリー3以上の要再検者の2次検診においては各病院が悲鳴を上げているのが現状である。精査や経過観察をしていても乳癌が否定的なカテゴリー3以上の要再検者が数多くいて,がん診療連携拠点病院においては癌患者とともに癌ではない要再検患者を診ていかなければならず,乳腺外科の外来時間はどこの病院でも長く,院内でも不評のもとになっているのが現状である。そこで当院は2009年に乳癌検診専門のブレストイメージングセンターを立ち上げ,1次検診のみならず,2次検診も大学病院と分けることや10年以上経過した乳癌術後の患者たちをブレストセンターでフォローすることで,大学病院の外来時間の短縮が可能になった。のみならず関連病院の検診システムを工夫することで,外来時間は短縮しつつも手術件数を全国3位になるまで増やすことを可能にした。今回は当院独自の検診システムおよび医局員が少なくとも手術件数を増加させるに至ったスタッフの勤務体制を報告する。

著者

黒田 貴子 原 正一

出版者

公益社団法人 日本マリンエンジニアリング学会

雑誌

マリンエンジニアリング (ISSN:13461427)

巻号頁・発行日

vol.42, no.5, pp.794-799, 2007-09-01 (Released:2010-05-31)

参考文献数

6

著者

田口 晴邦 黒田 貴子 塚田 吉昭 宝谷 英貴 原口 富博 沢田 博史

出版者

国立研究開発法人海上・港湾・航空技術研究所

雑誌

基盤研究(B)

巻号頁・発行日

2014-04-01

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Wave Groupも含めた任意波中における船舶の挙動を推定するために必要な船体運動時系列計算コードを開発し、模型船を用いた水槽実験結果と比較した。その結果、開発した船体運動計算コードで、定傾斜が付いた状態の運動特性や減揺装置の効果等を精度よく推定できることが確認された。また、開発した船体運動時系列計算コードを用いて、Wave Groupを含む実際の波浪中を航行する船舶の危険性を実用的な観点から評価する手法を検討した。

著者

中村 昌彦 梶原 宏之 稲田 勝 原 正一 星野 邦弘 黒田 貴子

出版者

社団法人 日本船舶海洋工学会

雑誌

日本船舶海洋工学会論文集 (ISSN:18803717)

巻号頁・発行日

vol.4, pp.95-105, 2006 (Released:2007-04-06)

参考文献数

6

被引用文献数

2

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Recently, in domestic shipping, a shortage of crew members resulting from the severe labor environment and the aging of members are serious problems, and there is concern about stable transportation becoming difficult because of this. The hiring of younger crew members by improving the labor environment and reducing the labor load is therefore an important target. The automatic mooring is one means of mitigating the labor load of standby operations. If the shift of the mooring tension induced by tide level change and the draft change while loading can be prevented, and moreover, if the hull position can be kept automatic within the allowable limit, the labor load can be reduced. In this research, a simulator which calculates mooring tensions and ship motions was built first, and calculation accuracy was checked by model experiments. The controller was then designed using the simulator and the performance was verified by tank tests. Successful results are shown.