JP2011207456A - Ship - Google Patents

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JP2011207456A
JP2011207456A JP2010079966A JP2010079966A JP2011207456A JP 2011207456 A JP2011207456 A JP 2011207456A JP 2010079966 A JP2010079966 A JP 2010079966A JP 2010079966 A JP2010079966 A JP 2010079966A JP 2011207456 A JP2011207456 A JP 2011207456A
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ship
hierarchical
hierarchical structure
wind pressure
superstructure
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JP5385195B2 (en
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Kotaku Yamamoto
虎卓 山本
Koyu Kimura
校優 木村
Akihiko Fujii
昭彦 藤井
Hidesato Akibayashi
秀聡 秋林
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Mitsui Engineering and Shipbuilding Co Ltd
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Mitsui Engineering and Shipbuilding Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a ship capable of reducing wind pressure resistance of a superstructure while securing a capacity of the superstructure of the ship.SOLUTION: The superstructure 10, arranged on an upper deck 2 of the ship 1, having a bridge 11 is structured by building up a plurality of layered structures 10a, 120b, 10c wherein a curved surface 10aa (10ba) in an area between a first circular arc of which radius is equal to or longer than 5% of a maximum width of the layered structures 10a (10b) except for a dodger 13 and a support structure of the dodger and a second circular arc of which radius is equal to or shorter than 40% of the maximum width is arranged at both sides of the ship in a front surface of the layered structures 10a, 10b of all or some of the layered structures 10a, 10b, 10c in a planar view and a lower side layered structure 10a (10b) is arranged to be extended to a front side from the upper side layered structure 10b (10c) and a front part of the superstructure 10 is formed as a stair shape.

Description

本発明は、船舶の船橋及び居住区のスペースを削減することなく、船橋や居住区などの上部構造物の風圧抵抗を減少できる船舶に関する。   The present invention relates to a ship that can reduce wind pressure resistance of an upper structure such as a bridge and a residential area without reducing the space of the ship's bridge and the residential area.

図8及び図9に示すように、水上を走行する商用の船舶1Xでは、船体の上甲板2より上に、船橋11や居住区12のために上部構造物10を設けている。タンカーや貨物船などでは、この上部構造物10は、船尾側に設けられた機関室の上方に配置されている。この上部構造物10の見晴らしの良い上方部分には船橋11が設けられ、下方部分には居住区12が設けられている。この船橋11部分には、船体の左右舷側に延びるドジャーと呼ばれる見張り台13が設けられ、船橋11部分の後ろ側の水平部分15には煙突14が設けられている。   As shown in FIGS. 8 and 9, in a commercial ship 1 </ b> X that travels on the water, an upper structure 10 is provided above the upper deck 2 of the hull for the bridge 11 and the residential area 12. In a tanker or a cargo ship, the upper structure 10 is disposed above an engine room provided on the stern side. A bridge 11 is provided in an upper part of the upper structure 10 with a good view, and a residential area 12 is provided in a lower part. A watchboard 13 called a dodger extending on the left and right side of the hull is provided on the bridge 11 portion, and a chimney 14 is provided on the horizontal portion 15 on the rear side of the bridge 11 portion.

この上部構造物10は、上甲板2より上にあり、船橋11における視界を確保するために、通常は風をまともに受ける位置にあり、風圧抵抗を生じている。従来は、この風圧抵抗は船体の抵抗の大部分が水中の摩擦抵抗や渦抵抗、又は、水面の造波抵抗等であったため、大きな問題となっていなかった。そのため、施用面形状は上下左右方向に延びる平面で形成され、側面もこの正面に略垂直な面で形成され、後部側は煙突を配置するために上下方向に段差があるものの基本的には平面で囲われた形状となっている。   The upper structure 10 is located above the upper deck 2 and is normally in a position to receive the wind properly in order to secure the visibility on the bridge 11 and generates wind pressure resistance. Conventionally, this wind pressure resistance has not been a major problem because most of the resistance of the hull is underwater frictional resistance, eddy resistance, or water surface wave resistance. Therefore, the application surface shape is formed by a plane extending in the up / down / left / right direction, the side surface is also formed by a surface substantially perpendicular to the front surface, and the rear side is basically a plane although there is a step in the up / down direction to arrange the chimney. It is a shape surrounded by.

しかしながら、近年、船体の水中及び水面における抵抗を減少する技術が進展し、船舶の全体の抵抗に占める風圧抵抗の割合が増加してきており、また、省エネルギーによるCO2削減の要求が大きくなっていることもあり、この上部構造物の風圧抵抗を低減する要求が強まってきている。特に、実際に船舶が航行する海域では、風が吹いている場合が殆どであり、また、無風時であっても、船舶の航行によって船舶には前方から風が吹いているのと同じ状態になるので、この上部構造物の風圧抵抗の低減は非常に重要となる。 However, in recent years, the technology for reducing the resistance of the hull in water and on the water surface has progressed, and the ratio of wind pressure resistance to the total resistance of the ship has increased, and the demand for CO 2 reduction by energy saving has increased. In some cases, there is an increasing demand for reducing the wind pressure resistance of the superstructure. In particular, in the sea area where the ship actually sails, the wind is mostly blowing, and even when there is no wind, the ship is in the same state that the wind is blowing from the front due to navigation. Therefore, it is very important to reduce the wind pressure resistance of the superstructure.

これに関して、タンカーやバルクキャリアのような貨物船に設置されている居住区によって航行時に生ずる風圧抵抗を、居住区内における居室の配置や、船体外観上の問題を生ずることなく低減させるために、船体の甲板上に設置された居住区の船幅方向の正面と、船体長さ方向の側面とのなす隅角部に、一定寸法で直角状に切り欠かれた隅切り部を形成し、前記隅切り部によって、航行時に居住区の正面が受ける風圧抵抗を低減して省エネルギーを向上させる船舶の居住区形状が提案されている(例えば、特許文献1参照。)   In this regard, in order to reduce the wind pressure resistance generated during navigation by a residential area installed on a cargo ship such as a tanker or a bulk carrier, without causing problems with the layout of the room in the residential area and the appearance of the hull, Forming a corner cut out at a right angle with a certain dimension at the corner formed by the front in the ship width direction and the side in the hull length direction of the residential area installed on the deck of the hull; There has been proposed a residential area shape of a ship that reduces wind pressure resistance received by the front of the residential area during navigation by the corner cutting portion and improves energy saving (see, for example, Patent Document 1).

また、タンカーやバルクキャリアのような貨物船に設置されている居住区によって航行時に生ずる風圧抵抗を、居住区内における居室の配置等を変更する必要なく、比較的簡単な工事で低減させるために、船体の甲板上に設置された居住区の船幅方向の正面と、船体長さ方向の側面とのなす隅角部に、所定寸法の幅で切り落とした斜面状部が形成されており、この斜面状部によって、居住区の正面が受ける風圧抵抗を適切に低減させる船舶の居住区が提案されている(例えば、特許文献2参照。)   In addition, to reduce wind pressure resistance caused by navigation in residential areas installed on cargo ships such as tankers and bulk carriers with relatively simple construction without the need to change the layout of rooms in the residential areas. A slope-like part cut off with a predetermined width is formed at the corner between the front in the ship width direction of the residence area installed on the deck of the hull and the side in the length direction of the hull. There has been proposed a residential area of a ship that appropriately reduces the wind pressure resistance received by the front surface of the residential area by the slope-shaped portion (see, for example, Patent Document 2).

これらの船舶の居住区では、居住区の船幅方向の正面と、船体長さ方向の側面とのなす隅角部に、この面の本来の幅の5〜20%の一定寸法で直角状に切り欠かれた隅切り部を形成したり、この面の本来の幅の5〜20%の所定寸法の幅で切り落とした斜面状部を形成したりして、隅切り部で剥離した空気の流れを引き寄せて渦を弱めることにより、抵抗を低減している。   In the residential areas of these vessels, the corners formed by the front of the residential area in the width direction of the ship and the side surface in the length direction of the hull are perpendicular to each other at a constant dimension of 5 to 20% of the original width of this surface. The flow of air peeled off at the corner cut portion by forming a cut corner portion or by forming a slope-like portion cut by a predetermined width of 5 to 20% of the original width of this surface. The resistance is reduced by attracting and weakening the vortex.

これらの船舶の居住区では、従来技術の上部構造物の居住区内における居室等の配置を変更せずに、風圧抵抗の低減を図っているため、従来技術の上部構造物の隅部を正面や側面の本来の幅の5〜20%の範囲内で隅切り部や斜面状部を形成している。   In the residential areas of these ships, the wind pressure resistance is reduced without changing the arrangement of the rooms in the residential area of the superstructure of the prior art. The corner cut portion and the slope-shaped portion are formed within a range of 5 to 20% of the original width of the side surface.

特開平11−29090号公報JP-A-11-29090 特開平11−129977号公報JP-A-11-129777

一方、本発明者らは、上部構造物の隅部に曲面を設けて、前方からの空気の流れ(風)を正面から両舷側に円滑に流すことにより、正面方向からの空気の流れによる風圧抵抗を減少できるとの知見を得た。この曲面の半径は、正面の幅の5%〜40%程度が好ましいが、居住区の容積が減少するという問題が生じる。これを補うために居住区を幅方向に広げると風圧正面積が増加し、風圧抵抗が増加することになる。また、居住区を前方に伸ばすと、ベンチレーター等の各種機器の配置ができなくなる恐れがある。   On the other hand, the present inventors provide curved surfaces at the corners of the upper structure, and smoothly flow the air flow (wind) from the front to both sides from the front, so that the wind pressure due to the air flow from the front direction. The knowledge that resistance could be decreased was obtained. The radius of the curved surface is preferably about 5% to 40% of the width of the front surface, but there is a problem that the volume of the residential area decreases. In order to compensate for this, if the residential area is expanded in the width direction, the positive wind pressure area increases and the wind pressure resistance increases. Moreover, if the residential area is extended forward, there is a risk that various devices such as a ventilator cannot be arranged.

本発明の目的は、船舶の上部構造物の容積を確保しつつ、上部構造物の風圧抵抗を減少できる船舶を提供することにある。   The objective of this invention is providing the ship which can reduce the wind pressure resistance of an upper structure, ensuring the volume of the upper structure of a ship.

上記の目的を達成するための船舶は、船舶の上甲板の上に設けられ、かつ、船橋を有する上部構造物を、複数の階層構造物を積層して構成すると共に、該階層構造物の全ての又は一部の階層構造物の前方の面の両舷側に、平面視で、ドジャー及びドジャーの支持構造体を除いた当該階層構造物の最大幅の5%以上の半径の第1円弧と、前記最大幅の40%以下の半径の第2円弧との間の領域に入る曲面を設け、更に、下側の階層構造物を上側の階層構造物よりも前方に延ばして配置して、上部構造物の前方を階段状に形成して構成する。   A ship for achieving the above object is provided on the upper deck of the ship, and an upper structure having a bridge is formed by stacking a plurality of hierarchical structures, and all of the hierarchical structures are provided. A first arc having a radius of 5% or more of the maximum width of the hierarchical structure excluding the dodger and the support structure of the dodger in plan view, on both sides of the front surface of or a part of the hierarchical structure; A curved surface entering a region between the second arc having a radius of 40% or less of the maximum width is provided, and further, the lower hierarchical structure is arranged to extend forward from the upper hierarchical structure, and the upper structure The front of the object is formed in a step shape.

第1円弧よりも小さいと曲面による左右方向の流れの円滑化の効果が少なく、また、第2円弧よりも大きいと、曲面を設けることによる船橋及び居住区の容積の確保が難しくなる。なお、この構成により、単なる角部に丸めや、階層構造物全体が曲面となるような構造は本発明から除外される。なお、ドジャーとは、接岸時や離岸時等の操船に際して、舷側を監視するために人員が舷側に移動できるように、船橋の操舵室から左右両方向に延びて形成された構造物である。   If it is smaller than the first arc, the effect of smoothing the flow in the left-right direction due to the curved surface is small, and if it is larger than the second arc, it is difficult to secure the volume of the bridge and living area by providing the curved surface. In addition, this structure excludes from the present invention a structure in which a rounded corner or a hierarchical structure becomes a curved surface. The dodger is a structure formed to extend from the steering wheel of the bridge in both the left and right directions so that personnel can move to the side of the shore to monitor the shore when maneuvering at the time of berthing or leaving the berth.

上記の構成によれば、風圧抵抗に関しては、船舶航行時に、正面から受ける風は、上部構造物の正面によって流れを妨げられ、上部構造物の両舷側に流れていく左右方向の流れと、上部構造物の上側に流れて行く上下方向の流れに分かれる。この左右方向の流れは、両舷側の端部を曲面で形成することにより、角部の流れとは異なり、剥離が生じない円滑な流れとなるので、風圧抵抗が低減する。また、上下方向の流れは、正面が階段状に形成されることにより、正面を単一平面で形成した時よりも高さ方向の勾配が緩やかになるため、円滑な流れとなるので、風圧抵抗が低減する。   According to the above configuration, regarding wind pressure resistance, the wind received from the front during ship navigation is prevented from flowing by the front of the upper structure and flows in the left and right directions flowing on both sides of the upper structure, and the upper part. It is divided into a vertical flow that flows to the upper side of the structure. Unlike the flow at the corners, the flow in the left-right direction is a smooth flow that does not cause separation, and the wind pressure resistance is reduced. In addition, the flow in the vertical direction is smoother because the front is formed in a staircase, and the gradient in the height direction is gentler than when the front is formed with a single plane. Is reduced.

更に、この構成で、下側の階層構造物を前方に延ばして配置することにより、階層構造物の両舷側に曲面を設けたことによって減少した居住区の容積を相殺することができる。また、前方に延ばすことにより配置できなくなったベンチレーター等の各種機器を階段状に形成した階層構造物の屋上に配置することができる。   Furthermore, with this configuration, the lower hierarchical structure is disposed so as to extend forward, so that it is possible to offset the volume of the residential area that is reduced by providing curved surfaces on both sides of the hierarchical structure. Moreover, various devices such as a ventilator that cannot be arranged by extending forward can be arranged on the roof of a hierarchical structure formed in a staircase shape.

上記の船舶において、前記階層構造物の最大幅を全部同じにして形成すると、居住区の容積の確保が容易となる。   In the above-mentioned ship, if the maximum widths of the hierarchical structures are all made the same, it is easy to secure the volume of the residential area.

上記の船舶において、前記階層構造物の屋上部分と正面との角部を角取り又は丸めを設けて形成すると、この隅部における流れの剥離を防止して、この隅部における渦の発生を抑制できるので、風圧抵抗を更に減少できる。   In the above-mentioned ship, when the corners between the roof and the front of the hierarchical structure are formed by chamfering or rounding, flow separation at the corners is prevented and generation of vortices at the corners is suppressed. As a result, wind resistance can be further reduced.

なお、上記の風圧抵抗の少ない船舶の構造の決定方法は、風圧抵抗の少ない船舶の設計方法としても利用できる。   Note that the above-described method for determining the structure of a ship with low wind pressure resistance can also be used as a design method for ships with low wind pressure resistance.

本発明の船舶によれば、上部構造物を複数の階層構造物で形成すると共に、全て又は一部の階層構造部の両舷側を曲面で形成したので、上部構造物における風の流れを円滑にすることができ、風圧抵抗を低減して省エネルギー化を図ることができる。その結果、C02を減少して環境の悪化を防止できる。 According to the ship of the present invention, the upper structure is formed with a plurality of hierarchical structures, and both sides of all or some of the hierarchical structures are formed with curved surfaces, so that the wind flow in the upper structure is smooth. It is possible to reduce the wind pressure resistance and save energy. As a result, the deterioration of the environment can be prevented by reducing the C0 2.

また、下側の階層構造物を前方に延ばして配置することにより、階層構造物の両舷側に曲面を設けたことによって減少した居住区の容積を相殺することができる。また、前方に延ばすことにより配置できなくなったベンチレーター等の各種機器を階段状にした屋上に配置できる。   Further, by arranging the lower hierarchical structure so as to extend forward, it is possible to offset the volume of the residential area that has been reduced by providing curved surfaces on both sides of the hierarchical structure. In addition, various devices such as a ventilator that cannot be arranged by extending forward can be arranged on a rooftop having a staircase shape.

本発明の第1の実施の形態における船舶の上部構造物を斜め上方の前方から見た図である。It is the figure which looked at the superstructure of the ship in the 1st Embodiment of this invention from diagonally upward front. 図1の船舶の上部構造物の側面図である。It is a side view of the upper structure of the ship of FIG. 図1の上部構造物の平面図である。It is a top view of the superstructure of FIG. 上部構造物の階層構造物の曲面を示す部分拡大平面図である。It is a partial enlarged plan view which shows the curved surface of the hierarchical structure of an upper structure. 上部構造物の階層構造物の寸法を示す側面図である。It is a side view which shows the dimension of the hierarchical structure of an upper structure. 上部構造物の階層構造物の屋上部分と正面との角部を丸めた様子を示す側面図である。It is a side view which shows a mode that the corner | angular part of the roof part of the hierarchical structure of a superstructure, and the front was rounded. 上部構造物の階層構造物の屋上部分と正面との角部を角取りした様子を示す側面図である。It is a side view which shows a mode that the corner | angular part of the roof part of the hierarchical structure of an upper structure and a front was cut off. 従来技術の船舶の上部構造物を斜め上方の前方から見た図である。It is the figure which looked at the upper structure of the ship of a prior art from diagonally upward front. 図8の船舶の上部構造物の側面図である。It is a side view of the upper structure of the ship of FIG.

以下、図面を参照して本発明に係る船舶の実施の形態について説明する。図1〜図3に示すように、この実施の形態の船舶1では、上甲板2上に上部構造物10が設けられている。この上部構造物10は見晴らしが良い上方部分には船橋11を、その下方部分には居住区12を有して構成されている。また、船橋11の左右に、接岸時や離岸時等の操船に際して、舷側を監視するために人員が舷側側に移動できるように、船橋の操舵室から左右両方向に延びて形成されたドジャー13が設けられ、また、上部構造物10の船尾側の水平部14に煙突15が設けられている。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a ship according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, in the ship 1 of this embodiment, an upper structure 10 is provided on the upper deck 2. The upper structure 10 is constructed with a bridge 11 in the upper part with a good view and a residential area 12 in the lower part. In addition, a dodger 13 is formed on the left and right sides of the bridge 11 so as to extend in both the left and right directions from the steering room of the bridge so that personnel can move to the side of the berth in order to monitor the berth side when maneuvering at the time of berthing or leaving the berth. In addition, a chimney 15 is provided in the horizontal portion 14 on the stern side of the upper structure 10.

この上部構造物10を、複数(図1〜図3では3層)の階層構造物10a,10b,10cを積層して構成とする。更に、中段の階層構造物10bを最上層の階層構造物10cよりも前方に延ばして配置すると共に、最下層の階層構造物10aを上側の中段の階層構造物10bよりも前方に延ばして配置して、上部構造物の前方を階段状に形成する。   The upper structure 10 is configured by laminating a plurality (three layers in FIGS. 1 to 3) of hierarchical structures 10a, 10b, and 10c. Further, the middle hierarchical structure 10b is arranged to extend forward from the uppermost hierarchical structure 10c, and the lowermost hierarchical structure 10a is arranged to extend forward from the upper middle hierarchical structure 10b. Thus, the front of the upper structure is formed in a step shape.

それと共に、図3〜図5に示すように、これらの階層構造物10a,10b,10cの一部(図3〜図5では中段と最下層)の階層構造物10a,10bの前方の面の両舷側に、平面視で、ドジャー13、及び、ドジャーの支持構造体が設けられている場合にはこのドジャーの支持構造体(図1から図5では示していない。)を除いた当該階層構造物10a,10bの最大幅B1の5%以上の半径Rminの第1円弧Cminと、最大幅Bの40%以下の半径Rmaxの第2円弧Cmaxとの間の領域に入る曲面10aa、10baを設ける。なお、図3〜図5では、2つの階層構造物10a,10bに曲面10aa、10baを設けているが、更に風圧抵抗を減少させるために、全ての階層構造物10a,10b,10cに曲面を設けてもよい。   At the same time, as shown in FIGS. 3 to 5, a part of these hierarchical structures 10a, 10b and 10c (in the middle and lowermost layers in FIGS. 3 to 5) on the front surface of the hierarchical structures 10a and 10b. When the dodger 13 and the support structure of the dodger are provided on both sides in plan view, the hierarchical structure excluding the dodger support structure (not shown in FIGS. 1 to 5). Curved surfaces 10aa and 10ba are provided that enter a region between a first arc Cmin having a radius Rmin of 5% or more of the maximum width B1 of the objects 10a and 10b and a second arc Cmax having a radius Rmax of 40% or less of the maximum width B. . 3 to 5, the curved surfaces 10aa and 10ba are provided on the two hierarchical structures 10a and 10b. However, in order to further reduce the wind pressure resistance, curved surfaces are provided on all the hierarchical structures 10a, 10b and 10c. It may be provided.

第1円弧Cminよりも小さいと曲面10aa、10baによる左右方向の流れの円滑化の効果が少なく、また、第2円弧Cmaxよりも大きいと、曲面10aa、10baを設けることによる船橋11及び居住区12の容積の減少が大きく、これらの確保が難しくなる。   If it is smaller than the first arc Cmin, the effect of smoothing the flow in the left-right direction by the curved surfaces 10aa, 10ba is small, and if it is larger than the second arc Cmax, the bridge 11 and the residential area 12 by providing the curved surfaces 10aa, 10ba. The volume of the material is greatly reduced, making it difficult to secure these.

また、上部構造物の側方は平面形状の側面18で形成され、後方は、例えば、側面18に接続する後部斜面17と後部面16とで形成される。この後部斜面17は曲面で形成してもよい。また、その他の形状であってもよい。これらの後部の形状により、上部構造物10の後方部分で発生する渦流を抑制して抵抗の削減を図ることが好ましい。   Further, the side of the upper structure is formed by a planar side surface 18, and the rear side is formed by, for example, a rear slope 17 and a rear surface 16 connected to the side surface 18. The rear slope 17 may be formed with a curved surface. Other shapes may also be used. It is preferable to reduce the resistance by suppressing the vortex generated in the rear part of the upper structure 10 by the shape of the rear part.

この構成によれば、風圧抵抗に関しては、船舶航行時に、正面からの風は、上部構造物10の正面で両舷側に流れていく左右方向の流れと、上部構造物10の上側に流れて行く上下方向の流れに分離される。この左右方向の流れは、各階層構造物10a,10bの端部に形成した曲面10aa,10baで後方に円滑に流れるようになるので、剥離が発生しなくなり風圧抵抗が低減する。   According to this configuration, with respect to wind pressure resistance, the wind from the front flows to the both sides in front of the upper structure 10 and to the upper side of the upper structure 10 when navigating the ship. Separated into a vertical flow. Since the flow in the left-right direction smoothly flows backward on the curved surfaces 10aa, 10ba formed at the ends of the hierarchical structures 10a, 10b, separation does not occur and wind pressure resistance is reduced.

また、上下方向の流れは、正面を階層構造物10a,10b,10cで、上下方向に関して緩やかな勾配で形成された階段状の積層構造により、円滑な流れとなるので、風圧抵抗が低減する。   Further, the flow in the vertical direction is a smooth flow due to the step-like laminated structure formed with a gentle slope in the vertical direction with the hierarchical structures 10a, 10b, and 10c on the front, and thus the wind pressure resistance is reduced.

また、下側の階層構造物10a,10bを前方に距離L1、L2だけ延ばして配置することにより、階層構造物10a,10bの両舷側に曲面10aa,10baを設けたことによって減少した居住区12の容積を相殺することができる。また、前方に延ばすことにより減少した各種機器の配置面積を屋上で確保することができる。これにより、船舶1の上部構造物10の容積のみならず、上部構造物10の各種機器の配置面積を確保できる。   In addition, the lower hierarchical structure 10a, 10b is extended forward by the distances L1, L2, thereby reducing the residential area 12 reduced by providing the curved surfaces 10aa, 10ba on both sides of the hierarchical structure 10a, 10b. Can be offset. Moreover, the arrangement area of the various apparatuses reduced by extending ahead can be ensured on the rooftop. Thereby, not only the volume of the upper structure 10 of the ship 1 but also the arrangement area of various devices of the upper structure 10 can be secured.

また、図6及び図7に示すように、階層構造物10a,10b,10cの屋上部分10ab,10bb,10cbと正面との角部を角取り 10ac,10bc,10cc、又は、丸め10ad,10bd,10cdを設けて形成すると、この隅部における流れの剥離を防止して、この隅部における渦の発生を抑制でき、風圧抵抗を更に減少できるので、この構成とすることが好ましい。   Further, as shown in FIGS. 6 and 7, the corners between the rooftop portions 10ab, 10bb, 10cb and the front surface of the hierarchical structures 10a, 10b, 10c are chamfered 10ac, 10bc, 10cc, or rounded 10ad, 10bd, If 10 cd is provided, separation of the flow at this corner can be prevented, generation of vortices at this corner can be suppressed, and wind pressure resistance can be further reduced, so this configuration is preferable.

この角取り10ac,10bc,10ccの高さと幅は、各階層構造の高さH1,H2,H3のそれぞれ30%から60%程度が好ましく、また、丸め10ad,10bd,10cdの半径は各階層構造の高さH1,H2,H3のそれぞれ30%から60%程度が好ましい。   The heights and widths of the chamfers 10ac, 10bc, and 10cc are preferably about 30% to 60% of the heights H1, H2, and H3 of each hierarchical structure, and the radii of the rounds 10ad, 10bd, and 10cd are each hierarchical structure. The heights H1, H2 and H3 are preferably about 30% to 60%.

更に、階層構造物10a,10b,10cの最大幅B1を全部同じにして形成すると、居住区12の容積及び屋上部分10ab,10bb,10cbの面積の確保が容易となる。   Furthermore, if the hierarchical structures 10a, 10b, and 10c are formed to have the same maximum width B1, the volume of the residential area 12 and the area of the rooftop portions 10ab, 10bb, and 10cb can be easily secured.

本発明の船舶は、上部構造物を両舷に曲面を形成した複数の階層構造物で形成し、下側の階層構造物を前方に延ばして配置しているので、居住区の容積を確保しつつ、上部構造物における風の流れを円滑にして、風圧抵抗を低減して省エネルギー化、及び、C02の低減を図ることができるので、数多くの種類の船舶として利用できる。 In the ship of the present invention, the upper structure is formed of a plurality of hierarchical structures formed with curved surfaces on both sides, and the lower hierarchical structure is arranged to extend forward. while, in the smooth flow of air in the upper structure, energy saving by reducing the wind resistance, and, since it is possible to reduce the C0 2, can be used as many kinds of ships.

1、1X 船舶
2 上甲板
10 上部構造物
10a 階層構造物(最下層)
10b 階層構造物(中段)
10c 階層構造物(最上層)
10aa,10ba,10ca 曲面
10ab,10bb,10cb 屋上部分
11 船橋
12 居住区
13 ドジャー
14 後部水平部
15 煙突
16 後部面
17 後部斜面
B 船の幅
B1 上部構造物の最大幅
Cmin 最小円弧
Cmax 最大円弧
R1,R2,R3 曲面の半径
Rmin 最小円弧の半径
Rmax 最大円弧の半径
1, 1X Ship 2 Upper deck 10 Upper structure 10a Hierarchical structure (lowermost layer)
10b Hierarchical structure (middle)
10c Hierarchical structure (top layer)
10aa, 10ba, 10ca Curved surface 10ab, 10bb, 10cb Rooftop part 11 Bridge 12 Living area 13 Dodger 14 Rear horizontal part 15 Chimney 16 Rear part 17 Rear slope B Ship width B1 Maximum width of upper structure Cmin Minimum arc Cmax Maximum arc R1 , R2, R3 Curved surface radius Rmin Minimum arc radius Rmax Maximum arc radius

Claims (3)

船舶の上甲板の上に設けられ、かつ、船橋を有する上部構造物を、複数の階層構造物を積層して構成すると共に、
該階層構造物の全ての又は一部の階層構造物の前方の面の両舷側に、平面視で、ドジャー及びドジャーの支持構造体を除いた当該階層構造物の最大幅の5%以上の半径の第1円弧と、前記最大幅の40%以下の半径の第2円弧との間の領域に入る曲面を設け、
更に、下側の階層構造物を上側の階層構造物よりも前方に延ばして配置して、上部構造物の前方を階段状に形成したことを特徴とする船舶。
The upper structure provided on the upper deck of the ship and having a bridge is configured by stacking a plurality of hierarchical structures,
A radius of 5% or more of the maximum width of the hierarchical structure excluding the dodger and the support structure of the dodger in plan view on both sides of the front surface of all or part of the hierarchical structure. A curved surface that enters a region between the first arc and the second arc having a radius of 40% or less of the maximum width;
Furthermore, the lower hierarchical structure is arranged to extend forward from the upper hierarchical structure, and the front of the upper structure is formed in a step shape.
前記階層構造物の最大幅を全部同じにして形成したことを特徴とする請求項1記載の船舶。   The ship according to claim 1, wherein the hierarchical structures are formed with the same maximum width. 前記階層構造物の屋上部分と正面との角部を角取り又は丸めを設けて形成したことを特徴とする請求項1又は2に記載の船舶。   The ship according to claim 1 or 2, wherein corner portions between the roof portion and the front surface of the hierarchical structure are formed by rounding or rounding.
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