JP2017178181A5 - - Google Patents
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- JP2017178181A5 JP2017178181A5 JP2016071336A JP2016071336A JP2017178181A5 JP 2017178181 A5 JP2017178181 A5 JP 2017178181A5 JP 2016071336 A JP2016071336 A JP 2016071336A JP 2016071336 A JP2016071336 A JP 2016071336A JP 2017178181 A5 JP2017178181 A5 JP 2017178181A5
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（１）上記の目的を達成するために、本発明のツインスケグ船の船底構造は、船底の船尾側に船体幅方向に間隔をあけて設けられた一対のスケグと、前記一対のスケグの船尾側に個別に設置され、互いに内回りに回転するプロペラと、前記一対のスケグの相互間において前記船底に形成され、前記船尾側に向かって上方傾斜する傾斜面とを備えた、ツインスケグ船の船底構造であって、前記傾斜面の横断面は、第１位置では、前記船体幅方向に沿った平坦形状に形成され、前記第１位置よりも前記船尾側の第２位置では、前記船体幅方向に間隔をあけて設けられ上方に凹んだ一対の凹状部と、前記一対の凹状部の相互間に設けられ下方に凸となる凸状部とを有する起伏形状に形成され、前記凸状部は、湾曲状凸状部であり、前記第２位置は、前記プロペラから前記プロペラの直径の０．５倍だけ前方の位置と、前記プロペラから前記プロペラの直径の１．５倍だけ前方の位置との間において設定され、前記プロペラと前記第２位置との間の範囲において、下式［１］により規定される抉り深さの最大値が、計画吃水の４％以上且つ６％以下であることを特徴としている。
抉り深さ＝（前記凹状部の上端の高さ）−（前記凸状部の下端の高さ）…［１］
(1) In order to achieve the above object, the bottom structure of the twin skeg ship of the present invention comprises a pair of skegs provided at an aft side of the bottom at intervals in the width direction of the hull and a stern side of the pair of skegs. The bottom structure of a twin skeg vessel, comprising: a propeller separately installed on each other and rotating inward relative to each other; and an inclined surface formed on the bottom between the pair of skegs and inclined upward toward the stern side. The cross section of the inclined surface is formed in a flat shape along the hull width direction at a first position, and at a second position closer to the stern than the first position, the hull width direction is spaced apart Formed in an undulating shape having a pair of concave portions provided upward and recessed upward, and a convex portion provided between the pair of concave portions and convex downward, the convex portions being curved And the second position is Between the propeller and the second position between the propeller and the propeller by 0.5 times the diameter of the propeller and 1.5 times the diameter of the propeller from the propeller. Within this range, the maximum value of the depth of penetration defined by the following equation [1] is characterized by being 4% or more and 6% or less of the planned spring .
Circumferential depth = (height of upper end of the concave portion)-(height of lower end of the convex portion) ... [1]
（２）本発明のもう一つのツインスケグ船の船底構造は、船底の船尾側に船体幅方向に間隔をあけて設けられた一対のスケグと、前記一対のスケグの船尾側に個別に設置され、互いに内回りに回転するプロペラと、前記一対のスケグの相互間において前記船底に形成され、前記船尾側に向かって上方傾斜する傾斜面とを備えた、ツインスケグ船の船底構造であって、前記傾斜面の横断面は、第１位置では、前記船体幅方向に沿った平坦形状に形成され、前記第１位置よりも前記船尾側の第２位置では、前記船体幅方向に間隔をあけて設けられ上方に凹んだ一対の凹状部と、前記一対の凹状部の相互間に設けられ下方に凸となる凸状部とを有する起伏形状に形成され、前記凸状部は、前記船体幅方向で中央に平坦面を備えたステップ状凸状部であり、前記第２位置は、前記プロペラから前記プロペラの直径の０．５倍だけ前方の位置と、前記プロペラから前記プロペラの直径の１．５倍だけ前方の位置との間において設定され、前記プロペラと前記第２位置との間の範囲において、下式［２］により規定される抉り深さの最大値が、計画吃水の４％以上且つ６％以下であることを特徴としている。
抉り深さ＝（前記凹状部の上端の高さ）−（前記平坦面の高さ）…［２］
( 2 ) The bottom structure of another twin skeg according to the present invention is separately installed on the stern side of the pair of skegs and a pair of skegs spaced apart in the widthwise direction on the stern side of the ship bottom, A bottom structure of a twin skeg ship comprising: a propeller rotating inward relative to each other; and an inclined surface formed on the ship bottom between the pair of skegs and inclined upward toward the stern side, the inclined surface In the first position, the cross section of the cross section is formed in a flat shape along the hull width direction, and at the second position on the stern side with respect to the first position, the hull width direction is spaced apart Formed in an undulating shape having a pair of concave portions recessed in the lower portion and a convex portion provided between the pair of concave portions and convex downward, and the convex portion is at the center in the width direction of the hull Step-like convex portion with flat surface There, the second position is a position of the front by 0.5 times the diameter of the propeller from the propeller is set at between the propeller and the position of the front only 1.5 times the diameter of the propeller, the In the range between the propeller and the second position, the maximum value of the drilling depth defined by the following formula [2] is characterized by being 4% or more and 6% or less of the planned spring .
Depth of winding = (height of upper end of the concave portion) − (height of the flat surface) ... [2]
（３）上記の目的を達成するために、本発明のさらにもう一つのツインスケグ船の船底構造は、船底の船尾側に船体幅方向に間隔をあけて設けられた一対のスケグと、前記一対のスケグの船尾側に個別に設置され、互いに内回りに回転するプロペラと、前記一対のスケグの相互間において前記船底に形成され、前記船尾側に向かって上方傾斜する傾斜面とを備えた、ツインスケグ船の船底構造であって、前記傾斜面は、第１位置では、前記船体幅方向に沿った平坦形状に形成され、前記第１位置よりも前記船尾側の第２位置では、前記プロペラよりも前記船体幅方向のセンターライン側に上端が配置されると共に上方に凹んだ単一の凹状部を有する凹形状に形成され、前記第２位置は、前記プロペラから前記プロペラの直径の０．５倍だけ前方の位置と、前記プロペラから前記プロペラの直径の１．５倍だけ前方の位置との間において設定され、前記プロペラと前記第２位置との間の範囲において、下式［３］により規定される抉り深さの最大値が、計画吃水の４％以上且つ６％以下であることを特徴としている。
抉り深さ＝（前記凹状部の上端の高さ）−（前記横断面における、前記プロペラの回転中心よりもプロペラ半径だけ前記内側の位置における高さ）…［３］
( 3 ) In order to achieve the above object, the bottom structure of still another twin skeg ship of the present invention comprises a pair of skegs spaced apart in the widthwise direction on the aft side of the bottom, and the pair of skegs. A twin skeg comprising a propeller separately installed on the stern side of the skeg and rotating inward with respect to each other, and an inclined surface formed on the bottom between the pair of skegs and inclined upward toward the stern side. The inclined surface is formed in a flat shape along the widthwise direction of the hull at a first position, and at a second position on the stern side of the first position, the inclined surface is at a lower position than the propeller. The upper end is disposed on the center line side in the width direction of the hull and is formed in a concave shape having a single concave portion recessed upward, and the second position is 0.5 times the diameter of the propeller from the propeller Between the propeller and the second position, and is defined by the following equation [3]. It is characterized in that the maximum value of the depth is 4% or more and 6% or less of the planned spring.
Depth of winding = (height of upper end of the concave portion)-(height at the position inward of the propeller radius of the propeller by the propeller radius in the cross section) ... [3]
（４）上記の目的を達成するために、本発明のツインスケグ船は（１）〜（３）の何れかに記載の船底構造を備えたことを特徴としている。 ( 4 ) In order to achieve the above object, the twin skeg ship of the present invention is characterized by having the ship bottom structure according to any one of (1) to ( 3 ).
（５）前記船底に気泡を噴出する空気潤滑システムを備えることが好ましい。 ( 5 ) It is preferable to provide the air lubrication system which ejects an air bubble to the said ship bottom.
Claims (5)
前記一対のスケグの船尾側に個別に設置され、互いに内回りに回転するプロペラと、
前記一対のスケグの相互間において前記船底に形成され、前記船尾側に向かって上方傾斜する傾斜面とを備えた、ツインスケグ船の船底構造であって、
前記傾斜面の横断面は、
第１位置では、前記船体幅方向に沿った平坦形状に形成され、
前記第１位置よりも前記船尾側の第２位置では、前記船体幅方向に間隔をあけて設けられ上方に凹んだ一対の凹状部と、前記一対の凹状部の相互間に設けられ下方に凸となる凸状部とを有する起伏形状に形成され、
前記凸状部は、湾曲状凸状部であり、
前記第２位置は、前記プロペラから前記プロペラの直径の０．５倍だけ前方の位置と、前記プロペラから前記プロペラの直径の１．５倍だけ前方の位置との間において設定され、
前記プロペラと前記第２位置との間の範囲において、下式［１］により規定される抉り深さの最大値が、計画吃水の４％以上且つ６％以下である
ことを特徴とする、ツインスケグ船の船底構造。
抉り深さ＝（前記凹状部の上端の高さ）−（前記凸状部の下端の高さ）…［１］ A pair of skegs spaced apart in the widthwise direction on the aft side of the ship bottom,
Propellers individually installed on the stern side of the pair of skegs and rotating inward relative to each other;
A bottom structure of a twin skeg ship, comprising: an inclined surface formed on the bottom of the ship between the pair of skegs and inclined upward toward the stern side,
The cross section of the inclined surface is
At the first position, it is formed in a flat shape along the hull width direction,
At the second position on the stern side with respect to the first position, a pair of concave portions provided at intervals in the width direction of the hull and recessed upward, and a pair of concave portions are provided between the pair of convex portions downward is formed on the relief shape having a convex portion serving as,
The convex portion is a curved convex portion,
The second position is set between a position forward of the propeller by 0.5 times the diameter of the propeller and a position forward of the propeller by 1.5 times the diameter of the propeller.
In the range between the propeller and the second position, the maximum value of the drilling depth defined by the following formula [1] is 4% or more and 6% or less of the planned spring water. And, the bottom structure of the twin skeg ship.
Circumferential depth = (height of upper end of the concave portion)-(height of lower end of the convex portion) ... [1]
前記一対のスケグの船尾側に個別に設置され、互いに内回りに回転するプロペラと、
前記一対のスケグの相互間において前記船底に形成され、前記船尾側に向かって上方傾斜する傾斜面とを備えた、ツインスケグ船の船底構造であって、
前記傾斜面の横断面は、
第１位置では、前記船体幅方向に沿った平坦形状に形成され、
前記第１位置よりも前記船尾側の第２位置では、前記船体幅方向に間隔をあけて設けられ上方に凹んだ一対の凹状部と、前記一対の凹状部の相互間に設けられ下方に凸となる凸状部とを有する起伏形状に形成され、
前記凸状部は、前記船体幅方向で中央に平坦面を備えたステップ状凸状部であり、
前記第２位置は、前記プロペラから前記プロペラの直径の０．５倍だけ前方の位置と、前記プロペラから前記プロペラの直径の１．５倍だけ前方の位置との間において設定され、
前記プロペラと前記第２位置との間の範囲において、下式［２］により規定される抉り深さの最大値が、計画吃水の４％以上且つ６％以下である
ことを特徴とする、ツインスケグ船の船底構造。
抉り深さ＝（前記凹状部の上端の高さ）−（前記平坦面の高さ）…［２］ A pair of skegs spaced apart in the widthwise direction on the aft side of the ship bottom,
Propellers individually installed on the stern side of the pair of skegs and rotating inward relative to each other;
A bottom structure of a twin skeg ship, comprising: an inclined surface formed on the bottom of the ship between the pair of skegs and inclined upward toward the stern side,
The cross section of the inclined surface is
At the first position, it is formed in a flat shape along the hull width direction,
At the second position on the stern side with respect to the first position, a pair of concave portions provided at intervals in the width direction of the hull and recessed upward, and a pair of concave portions are provided between the pair of convex portions downward Formed in an undulating shape having a convex portion
The convex portion is a step convex portion provided with a flat surface at the center in the width direction of the hull,
The second position is set between a position forward of the propeller by 0.5 times the diameter of the propeller and a position forward of the propeller by 1.5 times the diameter of the propeller.
In the range between the second position and the propeller, the maximum depth of the scoop as defined by the following formula [2], characterized in that more than 4% of the planned Kissui and 6% or less, Tsu Bottom structure of the inskeg ship.
Depth of winding = (height of upper end of the concave portion) − (height of the flat surface) ... [2]
前記一対のスケグの船尾側に個別に設置され、互いに内回りに回転するプロペラと、
前記一対のスケグの相互間において前記船底に形成され、前記船尾側に向かって上方傾斜する傾斜面とを備えた、ツインスケグ船の船底構造であって、
前記傾斜面は、
第１位置では、前記船体幅方向に沿った平坦形状に形成され、
前記第１位置よりも前記船尾側の第２位置では、前記プロペラよりも前記船体幅方向のセンターライン側に上端が配置されると共に上方に凹んだ単一の凹状部を有する凹形状に形成され、
前記第２位置は、前記プロペラから前記プロペラの直径の０．５倍だけ前方の位置と、前記プロペラから前記プロペラの直径の１．５倍だけ前方の位置との間において設定され、
前記プロペラと前記第２位置との間の範囲において、下式［３］により規定される抉り深さの最大値が、計画吃水の４％以上且つ６％以下である
ことを特徴とする、ツインスケグ船の船底構造。
抉り深さ＝（前記凹状部の上端の高さ）−（前記横断面における、前記プロペラの回転中心よりもプロペラ半径だけ前記内側の位置における高さ）…［３］ A pair of skegs spaced apart in the widthwise direction on the aft side of the ship bottom,
Propellers individually installed on the stern side of the pair of skegs and rotating inward relative to each other;
A bottom structure of a twin skeg ship, comprising: an inclined surface formed on the bottom of the ship between the pair of skegs and inclined upward toward the stern side,
The inclined surface is
At the first position, it is formed in a flat shape along the hull width direction,
At the second position on the stern side with respect to the first position, the upper end is disposed on the center line side in the width direction of the hull with respect to the propeller and is formed in a concave shape having a single concave portion concave upward ,
The second position is set between a position forward of the propeller by 0.5 times the diameter of the propeller and a position forward of the propeller by 1.5 times the diameter of the propeller.
In the range between the propeller and the second position, the maximum value of the drilling depth defined by the following equation [3] is 4% or more and 6% or less of the planned spring water, Twinskeg Bottom structure of the ship.
Depth of winding = (height of upper end of the concave portion)-(height at the position inward of the propeller radius of the propeller by the propeller radius in the cross section) ... [3]
ことを特徴とする、ツインスケグ船。 A twin skeg vessel comprising the ship bottom structure according to any one of claims 1 to 3 .
ことを特徴とする、請求項４に記載のツインスケグ船。 The twin skeg vessel according to claim 4 , further comprising an air lubrication system that ejects air bubbles to the bottom of the vessel.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016071336A JP6665013B2 (en) | 2016-03-31 | 2016-03-31 | Bottom structure of twin skeg ship and twin skeg ship |
| PCT/JP2017/002562 WO2017169035A1 (en) | 2016-03-31 | 2017-01-25 | Ship bottom structure of twin skeg ship, and twin skeg ship |
| KR1020187025219A KR102124308B1 (en) | 2016-03-31 | 2017-01-25 | Bottom structure of twin skeg line and twin skeg line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016071336A JP6665013B2 (en) | 2016-03-31 | 2016-03-31 | Bottom structure of twin skeg ship and twin skeg ship |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2017178181A JP2017178181A (en) | 2017-10-05 |
| JP2017178181A5 true JP2017178181A5 (en) | 2019-05-09 |
| JP6665013B2 JP6665013B2 (en) | 2020-03-13 |
Family
ID=59964070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2016071336A Active JP6665013B2 (en) | 2016-03-31 | 2016-03-31 | Bottom structure of twin skeg ship and twin skeg ship |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6665013B2 (en) |
| KR (1) | KR102124308B1 (en) |
| WO (1) | WO2017169035A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018121414A1 (en) * | 2018-09-03 | 2019-02-14 | Emex Industrie AG | Hull with a rise in the area of a bottom of the hull |
| CN113799914B (en) * | 2021-10-29 | 2023-01-06 | 广州文冲船厂有限责任公司 | Stern structure and ship |
| CN115285279A (en) * | 2022-08-16 | 2022-11-04 | 宜昌一凡船舶设计有限公司 | A kind of shuttle-shaped double-tail fin profile ship shape and the design method of the shuttle-shaped double-tail fin |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007223557A (en) * | 2006-02-27 | 2007-09-06 | Mitsubishi Heavy Ind Ltd | Twin skeg vessel |
| JP4934361B2 (en) * | 2006-07-06 | 2012-05-16 | 三井造船株式会社 | Ship |
| JP2008018812A (en) * | 2006-07-12 | 2008-01-31 | Shipbuilding Research Centre Of Japan | Large sized transportation vessel |
| JP2012001115A (en) | 2010-06-17 | 2012-01-05 | Ihi Corp | Twin skeg ship |
| JP2013159245A (en) * | 2012-02-06 | 2013-08-19 | National Maritime Research Institute | Biaxial stern catamaran ship and method of designing biaxial stern catamaran ship |
-
2016
- 2016-03-31 JP JP2016071336A patent/JP6665013B2/en active Active
-
2017
- 2017-01-25 WO PCT/JP2017/002562 patent/WO2017169035A1/en active Application Filing
- 2017-01-25 KR KR1020187025219A patent/KR102124308B1/en not_active Expired - Fee Related
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