著者

遠藤 倫正 横田 公男 森鼻 英征 渕上 勝人 広瀬 衞 下山 仁一

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

日本造船学会論文集 (ISSN:05148499)

巻号頁・発行日

vol.1980, no.148, pp.107-120, 1980 (Released:2009-09-04)

参考文献数

31

被引用文献数

1 1

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The pressure hull of a deep submersible is a unique structure which requires sophisticated technology in its design and fabrication aspects. This paper presents the design and fabrication practices, which the authors have adopted to the pressure hull of the 2, 000m deep submergence research vehicle, “SHINKAI 2000”, ordered by Japan Marine Science and Technology Center. She is an up-to-date research submersible, having the greatest depth capability in Japan.She is under construction in Kobe Shipyard of MHI and scheduled to be completed in Oct. 1981. Her pressure hull has been tested successfully under external pressure of 1. 1 times as much as maximum operating depth. To complete the hull, the results and experiences from the R & D, which the authors have conducted extensively since 1969, have been effectively applied.This paper also discusses the future subjects to the deeper submersible, such as 6, 000m and deeper classes.

著者

金井 一彦 森鼻 英征 山崎 敏樹 寺田 邦夫

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

日本造船学会論文集 (ISSN:05148499)

巻号頁・発行日

vol.1972, no.132, pp.269-279, 1972 (Released:2010-01-22)

参考文献数

14

被引用文献数

1

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In order to obtain the collapse strength data on the spherical shells suitable to the pressure capsule of DSSV, collapsing tests were conducted using spherical shell models by means of MHI 1, 200 kg/cm2 hydrostatic tank. These models were made from several kinds of materials including ultra-high yield strength steels such as 18% Ni maraging steel, 10% Ni dual-strengthened steels etc., and machined into near-perfect spherical shape or spheres with initial imperfection of various, thicknesses.From these experiments the following conclusions are obtained : (1) Collapse pressure of relatively thick shells (ha/R10≥0.03) agrees to the theoretical inelastic buckling pressure by Gerard et al.(2) The effect of initial imperfections are evaluated by local radius in case of relatively thick shells. But for thinner shells, this method is not sufficient and nonlinear elasto-plastic analysis will be required.(3) Present results will not always agree with Krenzke's data, especially in thinner shells with flat spot.(4) Fracture appearance of collapsed shells are closely related to the fracture toughness of materials.

著者

福井 又助

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

造船協會會報 (ISSN:18842054)

巻号頁・発行日

vol.1931, no.48, pp.211-239, 1931-10-31 (Released:2009-07-23)

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In this paper, the author intends to describe how the “Kotaka” (a little river gun boat) was lifted by a crane and put on board a ship when she was transported from the Tama Dock Yard, Japan, to Shanghai.The hull of the boat is not so strong since she ha s very light scantlings, but she displaces 60 tons at the normal condition and her weight lifted was such amount as 53.5 tons. Therefore, it is a rare case to do such a work, and there were troubles to be overcome.You will be interested in the author's explanation about the following items : -The outline of the subject.The general feature of the “Kotaka” The calculation for the lifting arrangement.The result of the work. etc.

著者

土井 康明 茂里 一紘 堀田 多喜男

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

日本造船学会論文集 (ISSN:05148499)

巻号頁・発行日

vol.1991, no.170, pp.55-63, 1991 (Released:2009-09-04)

参考文献数

10

被引用文献数

1

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A drag reduction for 3-dimensional body is attempted by microbubble injection. Two models with different lengths are used for experiments to distinguish the resistance due to on microbubble injection itself and the skin friction affected by microbubble covering. A reformed Wigley model is used to investigate the effect of microbubble injection on wave making. Measurements of the resistance and the longitudinal wave profiles are performed. The covering by microbubbles is realized by injected air through a porous pipe with pore size of 15 μm. The flow of microbubbles is obsered and the bubble sizes are estimated based on the rising velocity of a bubble in still water.The results show that it is possible to reduce the resistance of a 3-dimensional body by use of microbubbles if the body is well covered by microbubbles. Although the resistance increases where microbubbles are injected, the local frictional resistance is reduced more than 20 % where microbubbles cover the body. The total resistance is reduced more than 5 %. Based on a wave analysis, it is found that injecting microbubbles into water does not affect on wave making resistance.

著者

杉村 卓 野崎 政治 鈴木 輝雄

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

造船協會論文集 (ISSN:18842062)

巻号頁・発行日

vol.1966, no.119, pp.209-220, 1966 (Released:2009-09-04)

参考文献数

4

被引用文献数

1 3

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In this paper the results of the destructive experiment of a 1/5 scale ship hull model is reported. The model was designed to be as similar as possible to the midship part of the destroyer escort and subjected to pure bending moment.The general buckling strength of the upper deck was mainly studied considering the effects of under-deck structures.A loading device was specially constructed for this experiment.Buckling of the upper deck occured over two frame spaces and its load agreed with a theoretical estimation.

著者

吉田 英三

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

造船協會會報 (ISSN:18842054)

巻号頁・発行日

vol.1928, no.43, pp.139-194, 1928-10-15 (Released:2009-09-04)

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The paper treats, about the Fullagar Diesel engines, installed on the motor ships “Florida Maru” and “Cuba Maru, ” and the contents are as followings.1. General remarks.2. Principal data and description of the M. S. “Florida Maru” and “Cuba Maru”.3. Description of Fullager Diesel engine.4. Principal data and construction of Fullager Diesel engine installed on the M.S. “Florida Maru” and “Cuba Maru.”5. Results of shop and sea trials of the engine.6. On the service of the M. S. “Florida Maru” and “Cuba Maru, ” with actual records of services.7. Engine troubles and their remedies, -cracks of cylinder liners, -crack of crosshead, -fire in scavenge air belt, -carbonization of fuel valves, -crack of pistons.

著者

大野 省三

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

造船協會會報 (ISSN:18842054)

巻号頁・発行日

vol.1936, no.59, pp.59-83, 1937-02-20 (Released:2009-07-23)

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The “Kinjosan Maru” is the first ship equipped with Howden Johnson improved Scotch boiler and Gotaverken turbo-compressor. The propelling machineries consist of two sets of boilers designed for working pressure 16 kg/cm2and steam temperature 315°C, and one set of triple expansion surface condensing reciprocating steam engine specially designed to suit Gotaverken turbo-compressor and superheated steam. The engine develops a normal output of 1950 I.H.P. at 82 r.p.m.The trials were carried out at a light loaded condition and the results were quite satisfactory. The maximum speed of 14-5075 Knots was recorded at 89·75 r.p.m. and 2, 324 I.H.P. and the coal consumption trial shows reasonable results and the mean consumption was 0.445 kg/I.H.P.-Hr.

著者

安川 宏紀 宮沢 多

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

日本造船学会論文集 (ISSN:05148499)

巻号頁・発行日

vol.2001, no.190, pp.181-190, 2001 (Released:2009-09-04)

参考文献数

4

被引用文献数

1

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試験は, プロペラの回転方向として, 内回りと外回りの2つについて実施し比較した。試験結果をまとめると次の通りである。1. 内回りプロペラにおいては, 船尾が岸壁から離れ難く, 横移動が不能となる場合もある。外回りプロペラにおいては, 横力が明らかに大きいようであり, 船尾が岸壁から離れ易い。横移動が不能となることはない。2. プロペラ回転数の組み合わせをDS/S, S/Hと変化させても, 内回りプロペラ装備船の離岸性能の改善効果はほとんど見られない。同様に, 右舷舵角を0, ±35degと3種類変更させても, 離岸性能改善に大きな効果はない。3. 船の初期位置を岸壁からは離れたところに持ってくると, 横移動は容易となる。Fig.4に横移動試験結果の1例を示す。船影は10sec毎の右から左に動く模型船の位置を表している。内回りプロペラ (Inward) においては船がほとんど横に移動していないこと, 外回りプロペラ (Outward) においては所期の通り船尾が岸壁から離れた後で横方向へ移動していることが分かる。

著者

郷田 兼則

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

造船協會會報 (ISSN:18842054)

巻号頁・発行日

vol.1939, no.64, pp.165-182, 1939-09-15 (Released:2009-09-04)

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In oil-tankers of Japan, it is very rare to have steam plants. “Kuroshio-Maru” which was recently completed has three main boilers of such a modern forced-circulating type as never been found formerly in our country. The steam condition of these boilers is 21 kg/cm2 G and 350°C. Each boiler generates steam 17, 000 kg/h at normal and 22, 000 kg/h at maximum. They are of the Kawasaki La-Mont marine water tube type and each has heating surface of 333 square metres excluding air-preheater, and is equipped with five oil burners, La-Mont water wall, superheater, economizer and tubular air-preheater. These boilers were adopted for the purpose to save space and to improve the.whole plant efficiency. One of these boilers was tested on land and obtained the efficiency of 87.29%.

著者

遠山 光一 中村 壽 斎藤 七五郎

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

造船協會會報 (ISSN:18842054)

巻号頁・発行日

vol.1953, no.75, pp.7-21, 1953 (Released:2009-09-04)

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Nous avons l'intention de vous presanter un projet du cargo en ciment armé qui a été actuellement construit au Japon pendant la grande guerre 19421945.Les principales dimensions de ce navire sont suivantes : mLongueur entre perpendiculaires 60.000Largeur hors borde 10.000Creux 6.000Tirant d'eau en charge 5.000Déplacement en charge 2, 200 tTonnage bruit 800 tPuissance du moteur à Diesel 750 ch.nVitesse commerciale 9.5nVitesse aux essais 10.83Dáprès l'expérience nous avons donné à la paragraphe 3 des avantages et des désavantages d'un navire en ciment armé par rapport à celles d'un navire en acier.La partie essentiele de ce memoire est les résultas des calculs des efforts, des tentions, des compressions et des cisaillements de la coque en ciment armé.

著者

横尾 幸一 矢崎 敦生 伊藤 達郎 杉村 泰 門井 弘行 安部 光弘 吉野 信治 月野 良久 山崎 一夫

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

日本造船学会論文集 (ISSN:05148499)

巻号頁・発行日

vol.1973, no.133, pp.33-47, 1973 (Released:2010-01-22)

参考文献数

16

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Recent extension of the container transport system has lead to the remarkable increase in both speed and size of container ships. Since there is a practical limitation to the maximum output of an individual engine, multiple-screw propulsion will become necessary for a large container ship to attain a higher speed with a large capacity of transport than the speed of 25 knots. Comprehensive research works have been conducted with the aim at developing a high speed container ship with triple-screw to be built at Mitsui Shipbuilding & Engineering Co., Ltd. in 1972, for the service between Europe and Japan.This report deals with comparative tests among single-, twin- and triple-screw propulsions, and with mutual interference between the hull and propellers, cavitation researches and full-scale measurements on the triple screw ship. Such other items of research works as vibratory forces of the propellers will be reported in a later paper.Principal conclusions obtained are as follows, 1) A triple-screw ship has a better propulsive performance than a twin-screw ship.2) For the triple-screw ship adopted, inward rotation of the wing propellers gives better propulsive efficiency than outward rotation, which is explained both by the wake measurements by 5 hole pitot tubes and by the results of the self-propulsion tests.3) Mutual interference between the center and wing propellers can be neglected practically.4) The effect of variation of the load of a propeller on the self-propulsion factors of each propeller will be negligible, unless the variation is too large.5) Added resistance of the appendages is also subject to the scale effect.6) Decreasing the camber of the propeller section near the leading edge was shown to be an effective means to decrease the amount of back cavitation, both on the ship and on the model.

著者

Fujimaru Tsuchiya

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

Journal of Zosen Kiokai (ISSN:18842054)

巻号頁・発行日

vol.1932, no.49, pp.187-204, 1932-04-30 (Released:2009-09-04)

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Ever increasing demand of motor ships in these days resulted remarkable improvement of the marine Diesel engines both in types and constructions.Air injection principle has been widely applied now, for all types and sizes with a great success and also demand for the engines of larger output made number of leading makers turned their step to start building of double acting two stroke engines. Range of application of double acting two stroke engines has been increased both in 'larger and smaller sizes as these engines have several superior characters. The first double acting two stroke airless injection engine was installed to the Japanese Motor Ship “KWANTO MARU.” During first one year's service, several difficulties experienced, but all probable cause investigated through and now completely eliminated.Thus M. A. N. double acting two stroke airless injection marine Diesel engines are proved as one of the most ideal engines.

著者

小池 裕二 佐伯 愛一郎 牟田口 勝生 今関 正典 宮部 宏彰 山下 誠也

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

日本造船学会論文集 (ISSN:05148499)

巻号頁・発行日

vol.1999, no.185, pp.111-117, 1999 (Released:2009-09-04)

参考文献数

6

被引用文献数

2

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An actively controlled anti-rolling system has been developed with a view of reducing the rolling motion of ship. It is a new type of anti-rolling systems to replace the conventional systems, such as anti-rolling tank and fin stabilizer, and is of hybrid type combining the pendulum-base passive type with active type driven by relatively small electric motors. This system is composed of a moving weight oscillating on rail shaped in circular arc, carrying the driving motors and reduction gears, and the passive, compact mechanism is realized. The driving force to control the movement of the moving weight is imparted from the electric motors through reduction gears connected to a lack and pinion mechanism. The actual system of a moving weight of 100 tons has been applied to oceanographic research vessel “MIRAI” (8672 GT.) for practical use. Prior to service at open sea areas, the control system has been designed based on the identified parameters of ship motion characteristics obtained by results of forced rolling oscillation test using anti-rolling system in the calm sea. Control performance and dynamic behavior have been analyzed by recorded data of ship motion and displacement of moving weight at open sea areas. It has been revealed that the system operated following the control law and provided performance to be aimed in design.

著者

金綱 正夫 関本 恒浩 関田 欣治 島田 潔

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

日本造船学会論文集 (ISSN:05148499)

巻号頁・発行日

vol.1994, no.175, pp.227-239, 1994 (Released:2009-01-08)

参考文献数

18

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This paper deals with the measured data obtained through the at-sea measurement of the TLP “EHIME”, an offshore nursery pilot firm station of Marino-Forum 21, of which tendons are parallel wire strands (PWS) protected by polyethylen sheath with specially manufactured cushion rubber rings at each ends and connected to a gravity type template through a belimouth shape structure. The measured data of the TLP dynamic responses are compared with theoretical estimation, and the strength performance of PWS as TLP tendons are discussed.The main results are as follows; 1) the TLP with the PWS mooring system has the same dynamic response characteristics as the conventional TLP with the steel pipe mooring system, 2) the mooring system by use of PWS type tendons adopted for the TLP “EHIME” exhibits sufficient strength and durability characteristics.

著者

徳永 純一郎 延永 尚志 中谷 龍男 岩崎 徹 福田 和廣 國武 吉邦

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

日本造船学会論文集 (ISSN:05148499)

巻号頁・発行日

vol.1998, no.183, pp.45-52, 1998 (Released:2009-09-16)

参考文献数

7

被引用文献数

1 3

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This paper proposes a new concept for the frictional drag reduction technique. The new technique makes use of a specific coating surface (Super-Water-Repellent Surface) which has a highly repellent effect and an ability to form a thin air film over it under water. When supplying a small amount of air to the specific coating surface from the outside continuously, the supplied air (secondary air) is absorbed in and joined with the primary air film and spread to form a filmy air flow along the surface. This technique reduces the frictional drag because of this phenomenon.A frictional drag test in the rectangular pipe flow and a resistance test of horizontal flat plate were carried out in order to verify the validity of this technique. As a result of these tests, it was confirmed that drag reductions of about 80% and about 55% were obtained for flow velocities of 4 m/s and 8 m/ s, respectively.

著者

重光 蔟 山縣 昌夫

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

造船協會會報 (ISSN:18842054)

巻号頁・発行日

vol.1932, no.50, pp.121-152, 1932-10-30 (Released:2009-07-23)

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To study the effects of fore-body form, longitudinal distribution of parallel middle body and breadth of cargo ships upon the resistance and mean annular wakes at the position of screw propeller, seventeen models are tested at Teishinsho Experiment Tank, and the results obtained are compared.

著者

藤野 正隆

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

日本造船学会論文集 (ISSN:05148499)

巻号頁・発行日

vol.1968, no.124, pp.51-72, 1968-12-20 (Released:2010-01-22)

参考文献数

10

被引用文献数

3 3

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前節で述べたように実験周波数には上限と下限があるが, さらに各状態での実験結果を比較するには特定のω'についての結果を用いることにした。そのためマリナー型船についてはω'=0.22~0.26, 東京丸についてはω'=0.17~0.20の結果を選んで以下の解析に使用した。

著者

新谷 厚

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

日本造船学会論文集 (ISSN:05148499)

巻号頁・発行日

vol.1985, no.158, pp.33-39, 1985 (Released:2009-09-04)

参考文献数

8

被引用文献数

1

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In this report, we deal with statistical analysis for resistance of high speed ship forms in still water.Ship forms are classified into two types, i. e. naked hull with bow dome and without bow dome.Multiple regression equations for residual resistance are obtained by regression analysis on results of resistance test. And also, multiple regression equations for wetted surface area are obtained.Using these formulae, it will be able to estimate easily effective horse power over a wide range of speed.Estimation formulae are very available when designed, and in the future there is a possibility of finding the direction to improve ship forms.

著者

川島 栄一 朝倉 五郎

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

造船協會論文集 (ISSN:18842062)

巻号頁・発行日

vol.1954, no.95, pp.81-88, 1954 (Released:2007-05-28)

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Now defunct Japanese Navy prescribed, at its designing of war crafts, in consideration of their stability capacity, the permissible lowest values of GM, OG, Stability range, etc. separately, in accordance with the class of vessels and their sizes.Later on, however, due to the development of stability theory, it became possible to determine the stability capacity, by applying the organic relation of these values mentioned above and obtaining a value that is the combination of these values.In this thesis the authors, basing upon the“Theory of Safety Criterion of a Ship”established by Prof. Watanabe, have calculated the Safety Criterion c Value, studying the actual instances of 15 vessels, including destroyers and torpedo boats of the defunct Japanese Navy, and about 90 of their different conditions and analysed them from various angle, such as the transition of the history, and the statistic distributional state.This study of the authors has led to the possibility to determine the permissible lowest value of safety criterion of naval small crafts.

著者

佐藤 祐金

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

造船協會會報 (ISSN:18842054)

巻号頁・発行日

vol.1934, no.54, pp.217-232, 1934-11-20 (Released:2009-07-23)

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The “Shinshu Maru” is the first ship equipped with Vulcan geared Diesel engines in Japan, and the propelling machinery consists, in brief, of two sets of Mitsubishi single acting, four-stroke-cycle, airless-injection, reversible Diesel engines of special design and two Vulcan hydraulic couplings with reduction gearing. These engines develop a total normal output of 2, 700 B. H. P. at 420 r. p. m., and this speed is reduced to 90 r. p. m. at the propeller shaft.The trials were carried out at one fifth loaded condition, and the results were quite satisfactory as follows : a) The maximum speed of 16302 knots was recorded with two engines at 100 r. p. m. on the propeller shaft, and 12.246 knots with one engine at 72 r. p. m.b) The minimum speed of 3.69 knots was recorded with one engine at 25 r. p. m. on the propeller shaft.c) Entirely uniform torque in the propeller shaft was recorded by the torsion recording apparatus.d) Easy manoeuvering.e) Reliability of running, etc.