JPS5613271A - Semi-submerged catamaran with pitch-restraining fins - Google Patents
Semi-submerged catamaran with pitch-restraining finsInfo
- Publication number
- JPS5613271A JPS5613271A JP8844379A JP8844379A JPS5613271A JP S5613271 A JPS5613271 A JP S5613271A JP 8844379 A JP8844379 A JP 8844379A JP 8844379 A JP8844379 A JP 8844379A JP S5613271 A JPS5613271 A JP S5613271A
- Authority
- JP
- Japan
- Prior art keywords
- fins
- pitch
- restraining
- catamaran
- fin
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Revetment (AREA)
Abstract
PURPOSE: To improve the working environment on a catamaran during its sotppage or very low speed travelling, by mounting thereon partial fins, which open and close plural openings formed in pitch-restraining fins.
CONSTITUTION: In each pitch-restraining fins 15 is formed plural openings 16, which extend vertically therethrough. Each partial fin 17 is pivotably mounted on a horizontal transverse axis 18 so as to open or close its corresponding opening 16. Each partial fin 17 is fixedly mounted on the axis 18, which extends into its corresponding lower pontoon body 4 through the pitch-restraining fin 15 and the fins 17 are simultaneously rotated by a rotational operation of their respective axes 18 by a common driving mechanism therefor. In this way, a large pitching of the catamaran and the accompanied wave shocks to the lower surface of an upper stracture 2 of the catamaran, are reduced, and the boarding comfortability and working environment are thus improved.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8844379A JPS5613271A (en) | 1979-07-11 | 1979-07-11 | Semi-submerged catamaran with pitch-restraining fins |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8844379A JPS5613271A (en) | 1979-07-11 | 1979-07-11 | Semi-submerged catamaran with pitch-restraining fins |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5613271A true JPS5613271A (en) | 1981-02-09 |
Family
ID=13942938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8844379A Pending JPS5613271A (en) | 1979-07-11 | 1979-07-11 | Semi-submerged catamaran with pitch-restraining fins |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5613271A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1988006547A1 (en) * | 1987-02-24 | 1988-09-07 | Horton, Corwin, R. | Bow foil |
JPH0218189A (en) * | 1988-07-07 | 1990-01-22 | Ishikawajima Harima Heavy Ind Co Ltd | Catamarran |
JP2011251596A (en) * | 2010-06-01 | 2011-12-15 | Tsuneishi Holdings Corp | Catamaran for oscillation reduction control and method of controlling the same |
-
1979
- 1979-07-11 JP JP8844379A patent/JPS5613271A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1988006547A1 (en) * | 1987-02-24 | 1988-09-07 | Horton, Corwin, R. | Bow foil |
JPH0218189A (en) * | 1988-07-07 | 1990-01-22 | Ishikawajima Harima Heavy Ind Co Ltd | Catamarran |
JP2011251596A (en) * | 2010-06-01 | 2011-12-15 | Tsuneishi Holdings Corp | Catamaran for oscillation reduction control and method of controlling the same |
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