JPS6332676B2 - - Google Patents
Info
- Publication number
- JPS6332676B2 JPS6332676B2 JP245481A JP245481A JPS6332676B2 JP S6332676 B2 JPS6332676 B2 JP S6332676B2 JP 245481 A JP245481 A JP 245481A JP 245481 A JP245481 A JP 245481A JP S6332676 B2 JPS6332676 B2 JP S6332676B2
- Authority
- JP
- Japan
- Prior art keywords
- center
- hull
- strut
- buoyancy
- struts
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
- B63B1/107—Semi-submersibles; Small waterline area multiple hull vessels and the like, e.g. SWATH
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Description
【発明の詳細な説明】
本発明は、船体運動性能の改善をはかつた半没
水型双胴船に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a semi-submersible catamaran with improved hull motion performance.
第１図は従来の半没水型双胴船を示しており、
ロワーハル１、船長方向に全通するストラツト２
およびクロスデツキ３により船体が構成されてい
るが、その排水量の大部分はロワーハル１で受持
たれている。ところがロワーハル１の後方に推進
器５および舵４を設けるため、ロワーハル１は他
の船体部分に対し前方に偏つて設けなければなら
ず、その結果ロワーハル１およびストラツト２の
浮心Ｂの位置は、船体中央（船尾垂線Ａと船首垂
線Ｃとの間の中央）よりも前方になる。 Figure 1 shows a conventional semi-submersible catamaran.
Lower hull 1, strut 2 that runs completely in the direction of the captain
The hull is composed of a cross deck 3 and a cross deck 3, and the lower hull 1 takes care of most of the displacement. However, since the propulsion device 5 and rudder 4 are installed behind the lower hull 1, the lower hull 1 must be installed biased forward with respect to other hull parts, and as a result, the position of the center of buoyancy B of the lower hull 1 and the strut 2 is as follows. It will be forward of the center of the hull (center between stern perpendicular line A and bow perpendicular line C).
一方、全通型ストラツト２は、第２図（第１図
の水面位置で船体を切断した断面図）に示されて
いるように、造波抵抗軽減のため船首部を細く形
成されているが、操舵装置等を搭載するため船尾
部は細く形成することができず、その結果浮面心
Ｆの位置は、船体中央よりも後方になる。 On the other hand, as shown in Figure 2 (a cross-sectional view of the hull taken at the water surface in Figure 1), the full-through strut 2 has a narrow bow section to reduce wave-making resistance. , the stern section cannot be made narrow because it is equipped with a steering device, etc., and as a result, the center of floating surface F is located aft of the center of the hull.
したがつて浮面心Ｆは浮心Ｂの真上よりも著し
く後方へずれた位置にあり、これにより船体の上
下揺れと縦揺れとが連成して、船体運動性能の低
下を招くという問題点がある。 Therefore, the center of buoyancy F is located at a position significantly aft of the position directly above the center of buoyancy B, which causes the vertical and pitching of the ship to be coupled, resulting in a reduction in the ship's motion performance. There is.
本発明は、このような問題点を解決しようとす
るもので、ストラツトを簡素な全通型とし、推進
器および舵を没水体の後方にそなえるようにしな
がら、船体の上下揺れと縦揺れとの連成を防止で
きるようにして船体運動性能の改善をはかつた半
没水型双胴船を提供することを目的とする。 The present invention aims to solve these problems by making the strut a simple all-through type, and arranging the propulsion device and rudder behind the submerged body, while also reducing the vertical and pitching of the ship. An object of the present invention is to provide a semi-submerged catamaran that can prevent coupling and improve hull motion performance.
このため本発明の半没水型双胴船は、没水して
いる左右一対のロワーハルと、同ロワーハル上に
それぞれ立設されて船長方向に全通する左右一対
のストラツトと、水面の上方で各ストラツトの上
端部を連結するクロスデツキとで船体が構成され
るとともに、上記ロワーハルの後方にそれぞれ推
進器および舵をそなえ、上記ストラツトの浮面心
を上記のロワーハルおよびストラツトの浮心のほ
ぼ真上に位置させるべく、船体中央よりも後方に
おける上記ストラツトの喫水線の上下にわたり同
ストラツトに開孔区画が形成されて、船体中央よ
りも前方においては上記ストラツトに開孔区画が
形成されていないことを特徴としている。 Therefore, the semi-submersible catamaran of the present invention has a pair of left and right lower hulls that are submerged in water, a pair of left and right struts that are respectively erected on the lower hulls and extend completely in the direction of the ship's ship, and a pair of struts that extend above the water surface. The hull is composed of a cross deck that connects the upper ends of each strut, and a propulsion device and rudder are provided behind the lower hull, respectively, and the buoyancy center of the strut is located almost directly above the buoyancy center of the lower hull and strut. A hole section is formed in the strut above and below the waterline of the strut at the rear of the center of the ship, and no hole section is formed in the strut forward of the center of the ship. There is.
以上図面により本発明の一実施例としての半没
水型双胴船について説明すると、第３図はその側
面図、第４図はその喫水線に沿う水平断面図、第
５図は第３図のＶ−Ｖ線に沿う横断面図であつ
て、没水している左右一対のロワーハル１の上
に、それぞれ船長方向に全通するストラツト２が
立設され、左右一対のストラツト２の上端部を水
面上方でクロスデツキ３により連結して、船体が
構成されている。 To explain a semi-submersible catamaran as an embodiment of the present invention with reference to the drawings, FIG. 3 is a side view thereof, FIG. 4 is a horizontal sectional view along the waterline, and FIG. This is a cross-sectional view taken along line V-V, and struts 2 are erected on top of a pair of left and right lower hulls 1 that are submerged in water, and extend completely in the ship's ship direction. The hull is constructed by connecting them by a cross deck 3 above the water surface.
そして、左右の各ロワーハル１の後方に、それ
ぞれ推進器５および舵４が設けられている。 A propulsion device 5 and a rudder 4 are provided behind each of the left and right lower hulls 1, respectively.
したがつて、各ロワーハル１は他の船体部分に
対し、前方へ偏つて配設されるようになり、これ
に伴いロワーハル１およびストラツト２の浮心Ｂ
の位置も船体中央（船尾垂線Ａと船首垂線Ｃとの
間の中央）よりも前方になる。 Therefore, each lower hull 1 is disposed biased forward with respect to other hull parts, and as a result, the center of buoyancy B of the lower hull 1 and strut 2 is
The position is also forward of the center of the hull (the center between the stern perpendicular line A and the bow perpendicular line C).
そこで本発明の半没水型双胴船では、前方へ偏
つた上記浮心Ｂの位置のほぼ真上にストラツト２
の浮面心がくるように、船体中央よりも後方にお
ける各ストラツト２の喫水線６の上下にわたり、
同ストラツト２に開孔区画７が形成されており、
船体中央よりも前方においては同ストラツト２に
開孔区画は形成されていない。 Therefore, in the semi-submersible catamaran of the present invention, the strut 2 is placed almost directly above the position of the center of buoyancy B which is biased forward.
Above and below the waterline 6 of each strut 2 aft of the center of the hull so that the center of buoyancy is located,
An open hole section 7 is formed in the same strut 2,
No opening section is formed in the strut 2 forward of the center of the hull.
この開孔区画７は、換言すれば水線面積をもた
ない区画であつて、これにより船体中央よりも後
方におけるストラツト２の水線面積部分を減少さ
せることができ、これに伴い浮面心Ｆが前方へ移
されて、浮心Ｂの真上へくるように調整されるの
である。 In other words, the open hole section 7 is a section that does not have a waterline area, and as a result, the waterline area portion of the strut 2 at the rear of the center of the hull can be reduced, and accordingly, the center of floating surface F is moved forward and adjusted so that it is directly above the center of buoyancy B.
なお、開孔区画７を設ける際に、そのストラツ
ト外板面における開口は、船体抵抗の増大を招か
ない形状となるように配慮される。 When providing the aperture section 7, care is taken so that the aperture in the strut outer plate surface has a shape that does not increase the hull resistance.
上述のごとく、浮心Ｂの位置に応じて浮面心Ｆ
の位置を調整することができるので、浮心Ｂの位
置は自由に選べるようになり、舵４や推進器５の
位置あるいは排水量等から、浮心Ｂの位置を決め
ればよく、設計上の自由度が増す利点がある。 As mentioned above, the center of buoyancy F depends on the position of the center of buoyancy B.
Since the position of the center of buoyancy can be adjusted, the position of the center of buoyancy B can be freely selected, and the position of the center of buoyancy B can be determined based on the position of the rudder 4 and the propulsion unit 5, or the amount of displacement, etc., giving freedom in design. There is an advantage of increasing the degree of
そして、浮心Ｂの真上へ浮面心Ｆがくることに
より、船体の上下揺れと縦揺れとの連成が防止さ
れ、船体運動性能が改善されるのである。 By bringing the center of buoyancy F directly above the center of buoyancy B, coupling of vertical and pitching of the ship body is prevented, and the ship's motion performance is improved.
以上詳述したように、本発明の半没水型双胴船
によれば、従来と同様に水面下のロワーハルと水
面上方のクロスデツキとを連結するストラツトを
船長方向に全通する簡素なものとし、ロワーハル
の後方に推進器および舵をそなえるようにしなが
ら、上記ストラツトについて、船体中央よりも後
方においてのみ同ストラツトの喫水線の上下にわ
たり開孔区画を形成するという簡素な手段で、そ
の浮面心の位置をロワーハルおよびストラツトの
浮心のほぼ真上にくるように調整されて、従来困
難とされていた半没水型双胴船における船体運動
性能の改善をもたらすことができ、その安全性や
乗り心地を大幅に向上させる効果がある。 As detailed above, according to the semi-submersible catamaran of the present invention, the strut connecting the lower hull below the water surface and the cross deck above the water surface is simple and runs all the way in the direction of the ship's ship, as in the past. The position of the center of buoyancy of the above strut is determined by a simple method of forming an open hole section above and below the waterline of the strut only aft of the center of the hull, while providing the propulsion device and rudder behind the lower hull. The center of buoyancy of the lower hull and strut is adjusted to be almost directly above the center of buoyancy of the lower hull and struts, making it possible to improve the hull motion performance of semi-submersible catamarans, which was previously considered difficult, and improve safety and ride comfort. It has the effect of significantly improving.
第１，２図は従来の半没水型双胴船を示すもの
で、第１図はその側面図、第２図はその喫水線に
沿う水平断面図であり、第３〜５図は本発明の一
実施例としての半没水型双胴船を示すもので、第
３図はその側面図、第４図はその喫水線に沿う水
平断面図、第５図は第３図のＶ−Ｖ線に沿う横断
面図である。
１……ロワーハル、２……ストラツト、３……
クロスデツキ、４……舵、５……推進器、６……
喫水線、７……開孔部、Ａ……船尾垂線、Ｂ……
浮心、Ｃ……船首垂線、Ｆ……浮面心。
Figures 1 and 2 show a conventional semi-submersible catamaran, with Figure 1 being a side view thereof, Figure 2 being a horizontal sectional view along its waterline, and Figures 3 to 5 showing the present invention. Fig. 3 shows a side view of a semi-submersible catamaran as an example, Fig. 4 is a horizontal sectional view along the waterline, and Fig. 5 is a view taken along the line V-V in Fig. 3. FIG. 1... lower hull, 2... strut, 3...
Cross deck, 4... Rudder, 5... Propulsion device, 6...
Waterline, 7...Opening part, A...Stern perpendicular, B...
Center of buoyancy, C... Bow perpendicular, F... Center of buoyancy.
Claims (1)
ワーハル上にそれぞれ立設されて船長方向に全通
する左右一対のストラツトと、水面の上方で各ス
トラツトの上端部を連結するクロスデツキとで船
体が構成されるとともに、上記ロワーハルの後方
にそれぞれ推進器および舵をそなえ、上記ストラ
ツトの浮面心を上記のロワーハルおよびストラツ
トの浮心のほぼ真上に位置させるべく、船体中央
よりも後方における上記ストラツトの喫水線の上
下にわたり同ストラツトに開孔区画が形成され
て、船体中央よりも前方においては上記ストラツ
トに開孔区画が形成されていないことを特徴とす
る、半没水型双胴船。1 The hull is constructed by a pair of left and right lower hulls that are submerged in water, a pair of left and right struts that are erected on the lower hulls and extend completely in the direction of the ship, and a cross deck that connects the upper ends of each strut above the water surface. In addition, a propulsion device and a rudder are respectively provided at the rear of the lower hull, and the struts are arranged rearward of the center of the hull so that the center of buoyancy of the strut is located almost directly above the center of buoyancy of the lower hull and the strut. A semi-submersible catamaran, characterized in that the struts are provided with perforated sections above and below the waterline, and no perforated sections are formed in the struts forward of the center of the hull.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP245481A JPS57118979A (en) | 1981-01-09 | 1981-01-09 | Half-submerged catamaran |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP245481A JPS57118979A (en) | 1981-01-09 | 1981-01-09 | Half-submerged catamaran |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57118979A JPS57118979A (en) | 1982-07-24 |
| JPS6332676B2 true JPS6332676B2 (en) | 1988-06-30 |
Family
ID=11529731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP245481A Granted JPS57118979A (en) | 1981-01-09 | 1981-01-09 | Half-submerged catamaran |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57118979A (en) |
-
1981
- 1981-01-09 JP JP245481A patent/JPS57118979A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57118979A (en) | 1982-07-24 |
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