JP2003089384A - Fixed fishing boat - Google Patents
Fixed fishing boatInfo
- Publication number
- JP2003089384A JP2003089384A JP2001283559A JP2001283559A JP2003089384A JP 2003089384 A JP2003089384 A JP 2003089384A JP 2001283559 A JP2001283559 A JP 2001283559A JP 2001283559 A JP2001283559 A JP 2001283559A JP 2003089384 A JP2003089384 A JP 2003089384A
- Authority
- JP
- Japan
- Prior art keywords
- bow
- net
- spherical projection
- boat
- suppressing
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、定置網を用いて
漁をする定置漁船の船首部分の構造に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of the bow portion of a stationary fishing boat that uses a stationary net for fishing.
【０００２】[0002]
【従来の技術】定置漁業は海中に定置網を設置し、回遊
してくる魚を網内に導いて捕獲するというもので、網は
比較的沿岸に近い海域に設置される。定置網は海面に張
られたワイヤや化繊ロープに懸吊された状態で設置され
ており、毎日漁船を網内に入れ、網の奥の部分を入口側
から順に海面に寄せて魚を網の奥端に追い込んで水揚げ
する。2. Description of the Related Art A stationary fishery is a method of installing a stationary net in the sea and guiding the migratory fish into the net to catch the fish. The net is installed in the sea area relatively near the coast. The set net is installed in a state of being suspended by a wire stretched over the sea surface or a rope made of synthetic fiber.A fishing boat is put in the net every day, and the inner part of the net is moved toward the sea surface in order from the entrance side to put the fish in the back of the net. Drive to the end and land.
【０００３】従来はこの網起しや魚の捕獲を数隻の漁船
で行なっていたが、漁価の低減と人件費の高騰、漁業人
口の高齢化等のために、省力化と機械化が進み、１隻の
漁船で水揚げや網の交換を行なうようになってきてい
る。そのため、定置漁船は大型化し、搭載される省力化
機械の増大して、トン数も大きくなっている。Conventionally, the net raising and the catching of fish were carried out by several fishing boats, but labor saving and mechanization were promoted due to the reduction of fishing price, the rise of personnel cost, the aging of the fishing population, etc. One fishing boat has been used for landing and changing nets. As a result, stationary fishing boats have become larger, the number of labor-saving machines installed has increased, and the tonnage has also increased.
【０００４】更に定置網は、従来波の穏やかな内海の岸
に近い場所に設置されることが多かったが、漁業資源の
減少や漁船の大型化に伴って、波の高い外海や従来より
沿岸から離れた海域に設置されることも多くなり、以前
であれば操業できなかった気象状況でも操業する様にな
ってきている。[0004] Furthermore, the set net has often been installed near the coast of the inland sea where waves are gentle, but due to the decrease in fishing resources and the increase in size of fishing boats, the set net is often used from the high waves in the open sea or from the coast. It is often installed in distant waters, and it has come to operate even in weather conditions that were previously impossible.
【０００５】定置漁船は、漁をするときは船を横向きに
して移動させながら魚を追い込んでゆくこと、漁をする
には網を懸吊しているワイヤや化繊ロープを乗り越えて
網の内側に入らなければならないことなどのために、船
幅が広く吃水の浅い平底の船が用いられている。[0005] A stationary fishing boat moves the boat sideways to drive in the fish while fishing, and to catch the fish, the net is suspended over a wire or a synthetic rope that suspends the net and the inside of the net is caught. A flat-bottomed ship with a wide ship and shallow water is used because it must be entered.
【０００６】定置網の網に関しては、漁獲量の増大や網
の交換期間の延長、海中における網の安定性の増大など
を目的として種々の改良がなされているが、定置漁船の
改良はあまり行われていない。前述したように、漁船が
大型化し、搭載される機械器具の重量が増し、波の高い
海域をより遠くまで航行することが多くなっているが、
従来の船型をそのままスケールアップして大型化に対応
しているのが現状である。[0006] Regarding the nets of the set nets, various improvements have been made for the purpose of increasing the catch amount, extending the exchange period of the nets, and increasing the stability of the nets in the sea, but the fixed fishing boats have not been improved so much. Not not. As mentioned above, fishing boats have grown in size, the weight of machinery and equipment mounted on them has increased, and they often travel farther in high sea areas.
The current situation is that the existing hull form is scaled up as it is to cope with the increase in size.
【０００７】一方、外洋を航行する比較的大型の貨物船
・商船・沖合漁業船等に採用される船首形状として、船
首の吃水下に前方に突出する球状突起を設けた形状（球
状船首、バルバスバウなどと呼ばれている）が採用され
ている。この船首形状は、航行時に船首が水をかき分け
るときに生ずる波と水中を進行する球状突起によって生
ずる波とが互いに打消し合って、造波抵抗が減少する作
用が特に大型船の場合に大きいという特徴があり、更に
船首に設けた突起が水中で上下動するときに水の抵抗を
受けるために船のピッチングが抑えられること、突起を
設けた分だけ船首部分の浮力が大きくなること、突起の
長さ分だけ船の幅に対する長さが長くなるので航行抵抗
が小さくなる等の特徴を持っている。On the other hand, as a bow shape adopted for relatively large freighters, merchant ships, offshore fishing vessels, etc. sailing in the open sea, a shape in which a spherical projection protruding forward is provided under the water of the bow (spherical bow, barbus bow). It has been adopted). This bow shape is said to have a great effect in reducing wave-making resistance, especially in the case of large ships, because the waves generated when the bow separates water during navigation and the waves generated by the spherical projections traveling in water cancel each other out. There is a feature that the pitching of the ship is suppressed because the projection provided on the bow receives water resistance when moving up and down in the water, the buoyancy of the bow increases by the amount of the projection, Since the length of the ship is increased by the length of the ship, it has features such as reduced navigation resistance.
【０００８】[0008]
【発明が解決しようとする課題】定置漁船は上述した形
状を備えているため、航行するときの水の抵抗が大き
く、また波によって船首が持ち上げられやすいために、
ピッチング、特に船が波に向って航行するときのピッチ
ングが大きい。そのため、波が高いときには船首が高く
持ち上げられたあと海面に叩き付けられて大きな衝撃が
生ずる。更に機械化された定置漁船の船首には、重い
（通常３トン程度ある）揚網機が搭載されるため、ピッ
チングを起こしたときの衝撃が更に増大する。このよう
な船の挙動は、搭乗者に不快感を与え、船の速やかな航
行を妨げるばかりでなく、航行の安全を害する。Since the stationary fishing boat has the above-mentioned shape, the resistance of water when sailing is great, and the bow is easily lifted by the waves.
Great pitching, especially when the ship sails towards the waves. Therefore, when the waves are high, the bow is lifted high and then struck on the sea surface, causing a large impact. Further, since a heavy (usually about 3 ton) fishing net is installed on the bow of a mechanized stationary fishing boat, the impact when pitching occurs is further increased. Such behavior of the ship not only makes passengers uncomfortable and hinders the rapid navigation of the ship, but also impairs navigation safety.
【０００９】前述したように、船首底部に球状突起を設
けることにより、航行抵抗とピッチングを抑制できるこ
とが知られているが、定置漁船は網内の漁場へ入る必要
があり、船首底部に球状突起を設けると、網の内側に入
るときに網を懸吊しているワイヤや化繊ロープが船首に
引っ掛かって船が漁場に入ることができなくなる。As described above, it is known that providing a spherical projection on the bottom of the bow can suppress navigation resistance and pitching, but a stationary fishing boat needs to enter a fishing ground within a net, and thus a spherical projection on the bottom of the bow. With the provision, the wire or the synthetic fiber rope that suspends the net when it enters the inside of the net is caught on the bow and the ship cannot enter the fishing ground.
【００１０】この発明は、上記のような互いに相反する
技術的な問題点を解決して、船首や船底に受ける抵抗を
和らげ、航行時のピッチングを抑えて、波のある海域で
の航行安全性に優れた定置漁船を提供することを課題と
している。The present invention solves the mutually contradictory technical problems described above, softens the resistance received at the bow and bottom of the ship, suppresses pitching at the time of navigation, and secures navigation safety in sea areas with waves. The challenge is to provide excellent stationary fishing boats.
【００１１】[0011]
【課題を解決するための手段】この発明の定置漁船は、
船首底部に前方に突出する球状突起２を備えており、更
にこの球状突起２の先端と船首上部３との間に球状突起
２より幅狭い、例えばパイプや棒材等の杆材や板材等か
らなる、網抑え部材４が装架されている。この網抑え部
材４は、船首上部３と球状突起２の先端との間に下向き
方向に傾斜する網抑え縁６を形成している。The stationary fishing boat of the present invention comprises:
The bow bottom is provided with a spherical protrusion 2 projecting forward, and the width between the tip of the spherical protrusion 2 and the upper part 3 of the bow is narrower than that of the spherical protrusion 2, for example, from rods or plate materials such as pipes and rods. The net holding member 4 is mounted. The mesh restraint member 4 has a mesh restraint edge 6 that is inclined downward between the upper portion 3 of the bow and the tip of the spherical projection 2.
【００１２】上記網抑え部材４と球状突起２の先端との
固定部には、例えば両者をボルトで固定する構造とした
場合など、必要に応じて、網抑え縁６と球状突起２の先
端とを滑らかに連接する樹脂整形部５を設ける。The mesh restraining member 6 and the tip of the spherical protrusion 2 are fixed to the fixing portion between the mesh restraining member 4 and the tip of the spherical protrusion 2 as needed, for example, when the both are fixed by bolts. A resin shaping portion 5 that smoothly connects the two is provided.
【００１３】上記のこの発明の定置漁船は、船首底部に
球状突起２を設けることにより、船首が波に突っ込み又
波から離れるときの船首の上下動に抵抗を与えて、航行
時における船のピッチングを抑制すると共に、船首に搭
載される揚網機の重量に対応する浮力を船首部分に与
え、かつ網抑え部材４によって形成された網抑え縁６に
より、船が漁場に入るときの船首への網やワイヤの引っ
掛かりを防止したものである。In the stationary fishing boat of the present invention described above, the spherical projection 2 is provided on the bottom of the bow so as to resist the vertical movement of the bow when the bow thrusts into and away from the wave, and the pitching of the ship during navigation. Buoyancy corresponding to the weight of the fishing net mounted on the bow is applied to the bow portion, and the net restraining edge 6 formed by the net restraining member 4 prevents the bow from entering the fishing ground. It prevents the mesh and wires from being caught.
【００１４】定置漁船のように比較的小型の船舶の場合
には、球状突起による造波抵抗の減少作用はあまり大き
くなく、ピッチング抑制作用をより大きく発揮させるた
めに、球状突起２の形状としては、比較的偏平で、上動
しようとするときの水の抵抗の大きな形状とするのがよ
り好適である。In the case of a relatively small vessel such as a stationary fishing boat, the spherical projections do not significantly reduce the wave-making resistance, and the spherical projections 2 have a different shape in order to exert a greater pitching suppressing effect. It is more preferable that the shape is relatively flat and has a large resistance to water when trying to move upward.
【００１５】網抑え縁６は、球状突起２の先端上部と船
首上部との間にパイプステイ４を斜めに装架すること、
前縁が傾斜した板状のリブを装架すること等により、容
易に形成できる。The net restraining edge 6 is formed by obliquely mounting the pipe stay 4 between the upper end of the spherical projection 2 and the upper part of the bow.
It can be easily formed by mounting a plate-shaped rib having a slanted front edge.
【００１６】このパイプステイやリブのような網抑え部
材４の下端を球状突起２に固定する固定手段として、ボ
ルトによる締結構造などを採用したときは、その締結部
分に形成される凹凸に網が引っ掛るのを防止するため、
網抑え部材６と球状突起２との接続部にファイバ補強樹
脂などによる整形部５を設けて、網抑え縁６の下端が滑
らかに球状突起２の先端に連接されるようにする。When a fastening structure such as a bolt is adopted as a fixing means for fixing the lower end of the net restraining member 4 such as a pipe stay or a rib to the spherical projection 2, the net is formed on the unevenness formed at the fastening portion. To prevent getting caught,
A shaping portion 5 made of fiber reinforced resin or the like is provided at the connecting portion between the mesh restraint member 6 and the spherical protrusion 2 so that the lower end of the mesh restraint edge 6 is smoothly connected to the tip of the spherical protrusion 2.
【００１７】[0017]
【発明の実施の形態】図２はこの発明の定置漁船の一実
施例を示す全体側面図、図１はその船首部分の拡大側面
図である。2 is an overall side view showing an embodiment of a stationary fishing boat of the present invention, and FIG. 1 is an enlarged side view of the bow portion thereof.
【００１８】定置漁船は吃水の浅い平底の船型をしてお
り、船尾のスクリュー及びラダー部分には、網やワイヤ
が引っ掛からないようにガードが設けられている。平面
図は省略しているが、比較的船幅の広い矩形に近い平面
形状の甲板を備えており、操舵室や機関室は後部に設け
られて、船の中央から船首にかけて、水揚げした魚や網
交換時に網を搭載するための広い甲板が設けられてい
る。船首には揚網機１が搭載されている。The stationary fishing boat has a flat-bottomed boat shape with shallow water, and a screw and a ladder portion at the stern are provided with guards to prevent nets and wires from being caught. Although the plan view is omitted, it has a deck with a relatively rectangular shape that is relatively wide, and the steering room and engine room are provided at the rear, and the fish and nets landed from the center to the bow of the ship There is a wide deck for loading the net when replacing. A fishing net 1 is mounted on the bow.
【００１９】この発明の定置漁船には、船首底部に球状
突起２が設けられている。図示実施例の球状突起２は、
水中での上下方向の水の抵抗を大きくするために、前方
から見たときに横に細長い偏平形状となっており、かつ
上面が若干くびれた形状にして、特に水中で上動すると
きの水の抵抗を大きくするように考慮されている。The stationary fishing boat of the present invention is provided with a spherical projection 2 at the bottom of the bow. The spherical projection 2 of the illustrated embodiment is
In order to increase the resistance of water in the vertical direction in the water, it has a slender flat shape when viewed from the front, and has a slightly constricted upper surface, especially when moving up in water. Considered to increase the resistance of.
【００２０】球状突起２は、造波抵抗の減少作用をあま
り期待しないので、必ずしも常時水面下にある必要はな
い。船首が波にぶつかったときには、船体が波に当たる
より先に球状突起２が波の中に進入するので、ピッチン
グを低減する作用は十分に発揮できる。Since the spherical projection 2 is not expected to reduce the wave-making resistance so much, it does not always have to be under the water surface. When the bow hits the wave, the spherical projection 2 enters into the wave before the hull hits the wave, so that the effect of reducing pitching can be sufficiently exerted.
【００２１】この球状突起２の先端上部と船首上部の球
状突起の先端より前方の部分３との間に、ステンレスパ
イプ製のステイ４が装架されている。このパイプステイ
４は、上端と下端とに設けたフランジを船首上部の下面
及び球状突起２の先端上部にボルトで締結することによ
って、固定されている。そして、その締結部には、グラ
スファイバー樹脂を積層した整形部５を設けて、段差の
ない滑らかな形状としてある。A stay 4 made of stainless steel pipe is mounted between the upper end of the spherical projection 2 and a portion 3 on the upper part of the bow in front of the distal end of the spherical projection. The pipe stay 4 is fixed by fastening flanges provided on the upper end and the lower end to the lower surface of the upper part of the bow and the upper end of the tip of the spherical projection 2 with bolts. The fastening portion is provided with a shaping portion 5 in which glass fiber resin is laminated to form a smooth shape without steps.
【００２２】パイプステイ４の前縁によって網やワイヤ
を下方へ案内する網抑え縁６が形成される。船が網内へ
進入するとき、網、特に海面上に張られたワイヤや化繊
ロープがパイプステイの前縁に衝突して、当該前縁の傾
斜により、球状突起２の下方にワイヤや化繊ロープが案
内されて、当該ワイヤや化繊ロープが船首に引っ掛るの
が防止され、船を網内の漁場へ乗り入れることができ
る。The front edge of the pipe stay 4 forms a mesh restraining edge 6 for guiding the mesh and wires downward. When the ship enters the net, the net, especially the wire or the synthetic rope stretched over the sea surface collides with the front edge of the pipe stay, and the inclination of the front edge causes the wire or the synthetic rope below the spherical projection 2. Is guided to prevent the wire and the synthetic fiber rope from being caught on the bow, and the ship can be put on the fishing ground in the net.
【００２３】図の実施例では、網抑え部材としてパイプ
ステイを用いているが、リブのような平板状の部材であ
ってもよい。要は網抑え部材４の前縁に網やワイヤや化
繊ロープ等を下方に案内する傾斜した網抑え縁６が形成
されればよく、船の船首上部と球状突起２の先端との間
にワイヤを張架したような構造であってもよい。In the illustrated embodiment, the pipe stay is used as the mesh suppressing member, but a flat member such as a rib may be used. The point is that a slanted mesh restraint edge 6 for guiding the mesh, wire, synthetic fiber rope, etc. downward is formed at the front edge of the mesh restraint member 4, and the wire is provided between the upper part of the bow of the ship and the tip of the spherical projection 2. It may have a structure in which the above is stretched.
【００２４】更に図示実施例の定置漁船は、船底に受け
る波の衝撃を和らげるために、船首から中央部分にかけ
てチャインを付ける形状を採用している。このチャイン
は、レジャーボート等には採用されつつあるが、定置漁
船では従来採用されていなかったものである。このチャ
インは、船の底面の両側を舷側に向けて斜めに傾斜した
面とすることにより設けられ、船底に衝突した波の衝撃
を船の両側に逃がして和らげる効果がある。Further, the stationary fishing boat of the illustrated embodiment adopts a shape in which a chine is attached from the bow to the central portion in order to soften the shock of waves received on the bottom of the boat. Although this chine is being used in leisure boats and the like, it has not been used in stationary fishing boats. This chine is provided by making both sides of the bottom surface of the ship obliquely inclined toward the port side, and has the effect of escaping the shock of the waves that collide with the bottom of the ship to both sides of the ship.
【００２５】[0025]
【発明の効果】以上のようにこの発明により、海面に張
られたワイヤや化繊ロープを乗り越えて網内の漁場に進
入することが可能で、かつ波のある海面を航行するとき
の航行抵抗やピッチングを抑制した定置漁船を提供する
ことができ、定置漁船の大型化及び機械化並びに定置網
の設置場所の拡大に伴って生ずる航行安全性や航行距離
の増大に対応可能な定置漁船を提供することができる。INDUSTRIAL APPLICABILITY As described above, according to the present invention, it is possible to get over a wire stretched on the sea surface or a synthetic fiber rope to enter a fishing ground in a net, and to prevent a sailing resistance when sailing on a waved sea surface. It is possible to provide a stationary fishing boat that suppresses pitching, and to provide a stationary fishing boat that can cope with navigation safety and an increase in cruising distance that accompany the enlargement and mechanization of stationary fishing boats and the expansion of the location of stationary nets. it can.
【図１】実施例の船首部分を示す側面図FIG. 1 is a side view showing a bow portion of an embodiment.
【図２】図１の定置漁船の全体側面図FIG. 2 is an overall side view of the stationary fishing boat of FIG.
２ 球状突起 ３ 船首上部 ４ 網抑え部材 ５ 整形部 ６ 網抑え縁 2 spherical protrusion 3 upper bow 4 Mesh restraint member 5 Orthopedic department 6 mesh restraint edge
Claims (2)
を備え、この球状突起の先端と船首上部(3)との間に装
架された幅狭い網抑え部材(4)を備え、この網抑え部材
は船首上部と球状突起の先端との間に下向き方向に傾斜
する網抑え縁(6)を形成している、定置漁船。1. A spherical protrusion (2) protruding forward from the bottom of the bow.
A narrow net restraint member (4) mounted between the tip of the spherical projection and the upper part of the bow (3) is provided, and the net restraint member faces downward between the upper part of the bow and the tip of the spherical projection. A stationary fishing boat that forms a net restraint edge (6) that slopes in the direction.
定部に前記網抑え縁と球状突起の先端とを滑らかに連接
する樹脂整形部(5)を備えている、請求項１記載の定置
漁船。2. The resin shaping part (5) for smoothly connecting the mesh restraining edge and the tip of the spherical projection to the fixing portion between the mesh restraining member and the tip of the spherical projection. Stationary fishing boat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001283559A JP4686082B2 (en) | 2001-09-18 | 2001-09-18 | Stationary fishing boat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001283559A JP4686082B2 (en) | 2001-09-18 | 2001-09-18 | Stationary fishing boat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003089384A true JP2003089384A (en) | 2003-03-25 |
| JP4686082B2 JP4686082B2 (en) | 2011-05-18 |
Family
ID=19107031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001283559A Expired - Lifetime JP4686082B2 (en) | 2001-09-18 | 2001-09-18 | Stationary fishing boat |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4686082B2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5726074A (en) * | 1980-07-22 | 1982-02-12 | Hakko Shiyouun Kk | Ship with bulb at bow |
| JPS61105295A (en) * | 1984-10-26 | 1986-05-23 | Yanmar Diesel Engine Co Ltd | Vessel equipped with propeller guard apparatus |
| JPS62103287A (en) * | 1985-10-30 | 1987-05-13 | Mitsubishi Heavy Ind Ltd | Method of building end section of hull |
| JPS63258292A (en) * | 1987-04-15 | 1988-10-25 | Murakami Masaoki | Fishing boat having net avoiding device on bow |
-
2001
- 2001-09-18 JP JP2001283559A patent/JP4686082B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5726074A (en) * | 1980-07-22 | 1982-02-12 | Hakko Shiyouun Kk | Ship with bulb at bow |
| JPS61105295A (en) * | 1984-10-26 | 1986-05-23 | Yanmar Diesel Engine Co Ltd | Vessel equipped with propeller guard apparatus |
| JPS62103287A (en) * | 1985-10-30 | 1987-05-13 | Mitsubishi Heavy Ind Ltd | Method of building end section of hull |
| JPS63258292A (en) * | 1987-04-15 | 1988-10-25 | Murakami Masaoki | Fishing boat having net avoiding device on bow |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4686082B2 (en) | 2011-05-18 |
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