JP2923535B2 - Catamaran - Google Patents
CatamaranInfo
- Publication number
- JP2923535B2 JP2923535B2 JP29243490A JP29243490A JP2923535B2 JP 2923535 B2 JP2923535 B2 JP 2923535B2 JP 29243490 A JP29243490 A JP 29243490A JP 29243490 A JP29243490 A JP 29243490A JP 2923535 B2 JP2923535 B2 JP 2923535B2
- Authority
- JP
- Japan
- Prior art keywords
- catamaran
- height
- hull
- wave
- waves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は就航率を高めるようにした双胴船に関するも
のである。Description: TECHNICAL FIELD The present invention relates to a catamaran with an improved service rate.
［従来の技術］ 従来の双胴船は、第３図及び第４図に示す如く、左右
にある２つの胴部1aと1bの間、すなわち、双胴連結部２
を、船首側では徐々に高くしているが、ここをあまり高
くし過ぎると、船体の強度が低下するおそれがあるの
で、あまり高くすることができない。[Prior Art] As shown in FIGS. 3 and 4, a conventional catamaran is provided between two right and left hulls 1a and 1b, that is, a
Is gradually increased on the bow side, but if it is set too high, the strength of the hull may be reduced, so that it cannot be set too high.
一方、双胴船の就航率を高めるためには、上記双胴連
結部２の高さを船首尾方向全長にわたって高くすること
が必要である。On the other hand, in order to increase the service ratio of the catamaran, it is necessary to increase the height of the catamaran connecting portion 2 over the entire length in the bow-stern direction.
［発明が解決しようとする課題］ ところが、双胴船の就航率を高めるために双胴連結部
２の高さを高くすることは、第４図の高さＨを高くする
ことになって船体の重量が増加することになり、一方、
船舶において速力性能を高めるためには船体の重量を軽
減する必要があり、従来では、この相反する問題を解決
するようにしたものは提案されていない。[Problems to be Solved by the Invention] However, increasing the height of the catamaran connecting portion 2 in order to increase the service rate of the catamaran increases the height H in FIG. Weight will increase, while
It is necessary to reduce the weight of the hull in order to increase the speed performance of a ship, and there has been no proposal to solve this conflicting problem.
そこで、本発明者は、船体の重量をそれほど増加する
ことなく就航率を高めることについて、種々研究を行い
実験を行った結果、双胴船が航走中に双胴部で造る波の
長さ方向の範囲が特定できる事実を掴み、この特定範囲
のみの双胴連結部の高さを高くすれば、船体を増加させ
ることなく就航率を高めることができることを見い出
し、本発明をなした。すなわち、本発明者は、水槽にて
模型実験を行い、双胴船が航走中において双胴間で造る
波の高さについて調べたところ、第５図に示す如き結果
が得られた。これによると、双胴連結部２の船体中心線
部に沿う部分では、曲線Ｉで示す如く最大波高が約18cm
位であり、又、双胴部の内側部では、曲線IIで示す如く
最大波高が約10cm位であり、更に、上記船体の中心線部
の最大波高や双胴部の内側部の最大波高は、双胴船の船
首側の或る範囲、たとえば、双胴船を船尾から船首方向
へ10等分したとき6/10〜8/10の範囲に生じることがわか
り、上記船体が造る波と波浪が双胴間のクリアランスよ
りも大きいときに腹打ちが生じるので、上記6/10〜8/10
の範囲でのみ双胴連結部２の高さを高くすれば、腹打ち
がなくなり、欠航率を減らして就航率を高められること
を見い出し、本発明をなした。Therefore, the present inventor conducted various studies and experiments on increasing the cruising rate without increasing the weight of the hull so much, and as a result, it was found that the length of the wave produced by the catamaran while the catamaran was cruising. By grasping the fact that the range of the direction can be specified, the present inventor has found that if the height of the catamaran connection portion only in this specific range is increased, the service rate can be increased without increasing the hull. That is, the present inventor conducted a model experiment in a water tank and examined the height of a wave created between the catamaran while the catamaran was running, and the results as shown in FIG. 5 were obtained. According to this, in the portion of the catamaran connecting portion 2 along the hull center line, the maximum wave height is about 18 cm as shown by the curve I.
In the inner part of the catamaran, the maximum wave height is about 10 cm as shown by the curve II, and further, the maximum wave height of the center line of the hull and the maximum wave height of the inner part of the catamaran are It can be seen that waves occur in a certain range on the bow side of the catamaran, for example, in the range of 6/10 to 8/10 when the catamaran is divided into ten equal parts from the stern to the bow. 6/10 to 8/10
If the height of the catamaran connecting portion 2 is increased only in the range, the belly can be eliminated, the cancellation rate can be reduced and the service rate can be increased, and the present invention has been made.
したがって、本発明は、船体の重量をそれほど増加さ
せることなく就航率を高めることができるような双胴船
を提供しようとするものである。Accordingly, an object of the present invention is to provide a catamaran capable of increasing the service rate without significantly increasing the weight of the hull.
［課題を解決するための手段］ 本発明は、上記課題を解決するために、双胴連結部の
船首側における所定範囲のみ高さを高くすると共に、該
所定範囲のみの双胴連結部の船体中心線部を特に高く
し、その両側の双胴内側をそれより低くした構成とす
る。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention increases the height of only a predetermined range on the bow side of the catamaran connection portion, and hulls the catamaran connection portion only in the predetermined range. The center line is made particularly high, and the inside of the twin barrel on both sides is made lower.
［作用］ 双胴船が航走中に該双胴船の双胴部で造る波の最も高
いところの双胴連結部のみ高さを高くすることにより、
該高くした双胴連結部では腹打ちがなくなり、波浪で波
高が高くても欠航することなく就航できることになり、
就航率を高くすることができる。この際、双胴連結部の
一部のみを高くするだけであるから、重量はそれほど増
加することはない。又、双胴部で造られる波は、双胴連
結部の船体中心線部が特に高いので、船体中心線部を高
くしても就航率を高めることができる。[Operation] By increasing the height of only the catamaran joint at the highest point of the wave created by the catamaran while the catamaran is sailing,
In the raised catamaran connection part, the belly disappears, and even if the wave height is high due to waves, it will be possible to fly without canceling,
The service rate can be increased. At this time, the weight does not increase so much because only a part of the catamaran connection is raised. In addition, since the waves formed by the catamaran are particularly high at the hull centerline of the catamaran connecting portion, the service rate can be increased even if the hull centerline is raised.
［実 施 例］ 以下、本発明の実施例を図面を参照して説明する。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第１図及び第２図は本発明の一実施例を示すもので、
第５図に示す如き本発明者の実験結果により確認された
ところの航走中に双胴部で造られる波の高さの分布に基
づき、最も波高が高い船首側の特定範囲、すなわち、双
胴船の全長を10等分したときに最も波が高くなるところ
6/10〜8/10の範囲Ａにおける双胴連結部２にのみ、双胴
間の水線３からの高さを高くする。この高くする値は、
上記範囲における最も波が高いところの値よりもやや大
きい値とする。たとえば、双胴間の水線３から双胴連結
部２までの高さｈを63cmとしたとき、上記6/10〜8/10の
範囲Ａのみの双胴連結部２の船体中心線部Ｃを特に高く
して、その高さを、25cm位高くして、水線３からの高さ
を63cm＋25cm＝88cmにし、又、双胴内側４では8/10のと
ころをピークに約15cm高くして、水線３からの高さを78
cmにする。上記双胴連結部２の高さを高くすることによ
る船体重量の増加は僅かである。1 and 2 show one embodiment of the present invention.
Based on the distribution of the height of the waves formed by the catamaran during the cruising as confirmed by the inventor's experimental results as shown in FIG. 5, a specific range on the bow side where the wave height is highest, that is, Where the waves are highest when the full length of the hull is divided into ten equal parts
The height from the waterline 3 between the catamaran is increased only in the catamaran connecting portion 2 in the range A of 6/10 to 8/10. This higher value is
The value is set to be slightly larger than the value of the highest wave in the above range. For example, when the height h from the waterline 3 between the catamaran to the catamaran joint 2 is 63 cm, the hull centerline C of the catamaran joint 2 only in the range A of 6/10 to 8/10 is used. Is particularly high, its height is raised by about 25 cm, the height from the water line 3 is 63 cm + 25 cm = 88 cm, and the height of the inside of the twin barrel 4 is about 15 cm at the peak at 8/10. , 78 above the waterline 3
cm. The increase in the hull weight caused by increasing the height of the catamaran connection 2 is small.
就航において、波浪が高いと船は欠航することが多い
が、今、たとえば、波浪に伴う波高が1.25mで航走時に
双胴連結部２が腹打ちするか否かで就航するか欠航する
かを決めるとした場合、従来の双胴船において、双胴間
の水線３から双胴連結部２までの高さｈを63cmで一定と
すると、第５図の7/10の付近では双胴部で造られる波の
高さが船体中心線部では約18cm位あるので、腹打ちが発
生し、下表の波浪頻度検討表より波高1.25m以上では欠
航率が16.6％である。In service, ships are often canceled if the waves are high. For example, it is now determined whether the catamaran connection 2 will be hung or not at the time of sailing when the wave height accompanying the waves is 1.25 m. In the conventional catamaran, if the height h from the water line 3 between the catamaran to the catamaran joint 2 is fixed at 63 cm, the catamaran near 7/10 in FIG. Since the height of the waves created at the hull centerline is about 18 cm, a stomach hit occurs. According to the wave frequency table below, the cancellation rate is 16.6% when the wave height is 1.25 m or more.
なお、上記表は、或る就航ルートを30m程度の双胴船
を就航させるときの欠航率を表わすものである。 The above table shows the cancellation rate when a catamaran of about 30 m is started on a certain service route.
この点、本発明では、上記のように船首側の特定範囲
Ａの双胴連結部２のみの高さを、船体中心線部Ｃで従来
の双胴連結部の高さよりも25cm高くして、水線３からの
高さを88cmとし、又、双胴内側４では8/10のところをピ
ークに約15cm高くして、水線３からの高さを78cmにした
構成としたことにより、波浪時の波高が1.25mでは腹打
ちがなくなり、波浪時の波高が1.25mでも就航すること
ができ、これに伴い上記表における波高1.25m時の欠航
率10％がなくなるので、欠航率は6.6％となり、従来の
双胴船に比して就航率を10％高めることができることに
なる。In this regard, in the present invention, as described above, only the height of the catamaran connecting portion 2 in the specific range A on the bow side is made 25 cm higher than the height of the conventional catamaran connecting portion at the hull centerline portion C, The height from the waterline 3 was 88 cm, and the inside of the catamaran 4 was raised about 15 cm from the peak at 8/10 to a height of about 15 cm, and the height from the waterline 3 was set to 78 cm. When the wave height is 1.25m, the stomach is no longer hungry, and even when the wave height is 1.25m, it is possible to enter service. As a result, the service rate can be increased by 10% compared to the conventional catamaran.
［発明の効果］ 以上述べた如く、本発明の双胴船によれば、航走中に
双胴部で造られる波が最も高くなるところが船首側の或
る部分に特定できることを実験により掴み、この部分の
双胴連結部を部分的に高くした構成としてあるので、波
浪時に波が高くても双胴部で造られた波が双胴連結部に
ぶつかる、いわゆる腹打ちが生じなくなることから就航
させることができて就航率を高めることができ、特に、
上記船首側の特定範囲の双胴連結部の船体中心線部を高
くした構成としてあるので、双胴部で造られる波が特に
高くなるのは船体中心線部であることから、有効に就航
率の向上が図れる。[Effects of the Invention] As described above, according to the catamaran of the present invention, it has been experimentally grasped that the place where the wave created by the catamaran during the cruising becomes highest can be specified to a certain part on the bow side. Since this part of the catamaran connecting part is partially raised, even when waves are high during waves, waves created by the catamaran will not hit the catamaran connecting part, so that so-called belly striking will not occur To increase service rates,
Since the hull center line of the catamaran connection part in the specific range on the bow side is raised, the wave created by the catamaran is particularly high in the hull center line, so the effective service Can be improved.
【図面の簡単な説明】 第１図は本発明の一実施例を示す双胴船の概略側面図、
第２図は第１図の概略正面図、第３図は従来の双胴船の
概略側面図、第４図は第３図の概略正面図、第５図は双
胴部で造られる波の高さ分布を示す図である。 1a,1b……胴部、２……双胴連結部、３……水線、４…
…双胴内側、Ａ……船首側の特定範囲（所定範囲）、Ｃ
……船体中心線部。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side view of a catamaran showing one embodiment of the present invention,
2 is a schematic front view of FIG. 1, FIG. 3 is a schematic side view of a conventional catamaran, FIG. 4 is a schematic front view of FIG. 3, and FIG. It is a figure showing height distribution. 1a, 1b ... trunk, 2 ... catamaran joint, 3 ... water line, 4 ...
... inside the catamaran, A ... specific range (predetermined range) on the bow side, C
…… hull center line.
Claims (1)
結してなる双胴船において、船首尾方向に延びる上記双
胴連結部のうち、船首側の所定範囲のみの双胴連結部を
他の部分の双胴連結部よりも船体中心線部をより高く、
双胴内側をやや高くしたことを特徴とする双胴船。1. A catamaran having a body portion arranged in parallel to the left and right connected by a catamaran connection portion, of the catamaran connection portion extending in the bow direction, only a predetermined range on the bow side of the catamaran. The connecting part is higher at the hull center line than the catamaran connecting part of the other part,
A catamaran characterized by a slightly raised inside of the catamaran.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29243490A JP2923535B2 (en) | 1990-10-30 | 1990-10-30 | Catamaran |
| AU78397/91A AU639792B2 (en) | 1990-10-30 | 1991-06-13 | Catamaran |
| NO91912295A NO912295L (en) | 1990-10-30 | 1991-06-13 | CATAMARAN. |
| DE69106670T DE69106670T2 (en) | 1990-10-30 | 1991-06-14 | Two hull boat. |
| EP91305389A EP0483948B1 (en) | 1990-10-30 | 1991-06-14 | Catamarans |
| KR1019910009910A KR0132563B1 (en) | 1990-10-30 | 1991-06-15 | Catamarans |
| NO952897A NO305644B1 (en) | 1990-10-30 | 1995-07-20 | catamaran |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29243490A JP2923535B2 (en) | 1990-10-30 | 1990-10-30 | Catamaran |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04166488A JPH04166488A (en) | 1992-06-12 |
| JP2923535B2 true JP2923535B2 (en) | 1999-07-26 |
Family
ID=17781744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29243490A Expired - Fee Related JP2923535B2 (en) | 1990-10-30 | 1990-10-30 | Catamaran |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2923535B2 (en) |
-
1990
- 1990-10-30 JP JP29243490A patent/JP2923535B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04166488A (en) | 1992-06-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |