ES476489A1 - System for stabilizing a floating vessel - Google Patents
System for stabilizing a floating vesselInfo
- Publication number
- ES476489A1 ES476489A1 ES476489A ES476489A ES476489A1 ES 476489 A1 ES476489 A1 ES 476489A1 ES 476489 A ES476489 A ES 476489A ES 476489 A ES476489 A ES 476489A ES 476489 A1 ES476489 A1 ES 476489A1
- Authority
- ES
- Spain
- Prior art keywords
- vessel
- boat
- period
- air
- tank
- 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
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
- B63B39/02—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Revetment (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Toys (AREA)
Abstract
The present invention provides stabilization of a tall vessel with a passive system that is not based on the use of tanks having a natural period that is substantially the same as the natural oscillating period of the vessel to produce large neutralizing forces that dampen movement angle of the boat. Instead, deposits are used in order to reduce the time of straightening of the vessel as described in the following. According to the illustrated embodiments of the invention, water tanks are arranged on opposite sides of the longitudinal axis of symmetry of the vessel. The tanks are located below the waterline, preferably in the lower part of the hull of the vessel or close to it. The deposits have a shallow configuration with horizontal dimensions greater than the vertical dimensions. The lower portion of each deposit is substantially open to the sea to allow seawater to fill quickly and leave the deposits in short periods of time that are generally much shorter than the natural oscillatory movement period of the vessel. An open conduit interconnects the reservoirs to provide a continuous air passage between them. An air pump is coupled to the conduit to pressurize the reservoirs to a preselected pressure level to selectively control the water levels in the reservoirs during the oscillating movement of the waves. In operation, the water tanks are filled and emptied alternately in synchronism with the oscillating movement of the waves. For example, when the boat tends to swing clockwise about its central longitudinal axis, the tank on the right side of the boat will fill quickly through its lower large opening. The air is forced out of this reservoir through the conduit and into the reservoir on the left side of the vessel. The volume of air increased in the left tank quickly forces the water to leave it. When the boat tends to swing in a left-handed direction, the left tank is filled and the right tank is forced to empty under the force of air pressure in the system. The present invention acts to reduce the time of straightening of the vessel in a periodic sea. For example, when the boat tends to swing in one direction, the system reduces the tendency of the boat to revert to a vertical position. The reduction of the straightening moment prolongs the oscillation period of the vessel beyond the sea wave period. This in turn substantially reduces the amplitude of the balance. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/787,756 US4140074A (en) | 1977-04-15 | 1977-04-15 | System for stabilizing a floating vessel |
| US83189477A | 1977-09-09 | 1977-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES476489A1 true ES476489A1 (en) | 1979-06-01 |
Family
ID=27120684
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES468800A Expired ES468800A1 (en) | 1977-04-15 | 1978-04-14 | System for stabilizing a floating vessel |
| ES476489A Expired ES476489A1 (en) | 1977-04-15 | 1978-12-29 | System for stabilizing a floating vessel |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES468800A Expired ES468800A1 (en) | 1977-04-15 | 1978-04-14 | System for stabilizing a floating vessel |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS53128897A (en) |
| AU (1) | AU524242B2 (en) |
| BR (1) | BR7802358A (en) |
| CA (1) | CA1096710A (en) |
| DE (1) | DE2813459A1 (en) |
| ES (2) | ES468800A1 (en) |
| FI (1) | FI68193C (en) |
| FR (1) | FR2387157A1 (en) |
| GB (1) | GB1603224A (en) |
| HK (1) | HK44485A (en) |
| IT (1) | IT1156948B (en) |
| MX (1) | MX149140A (en) |
| MY (1) | MY114185A (en) |
| NL (1) | NL186501C (en) |
| NO (1) | NO159647C (en) |
| SG (1) | SG2885G (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5997196U (en) * | 1982-12-21 | 1984-07-02 | 運輸省第一港湾建設局長 | anti-swaying water tank |
| JPH0335895U (en) * | 1989-08-11 | 1991-04-08 | ||
| GB2439938A (en) * | 2006-01-30 | 2008-01-16 | Zentech Inc | A vessel roll motion damping device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE307796C (en) * | ||||
| US1700406A (en) * | 1926-08-03 | 1929-01-29 | Jr John Hays Hammond | Ship stabilizer |
| US3097622A (en) * | 1962-02-13 | 1963-07-16 | Muirhead & Co Ltd | Stabilization of floating bodies |
| GB1012370A (en) * | 1963-11-08 | 1965-12-08 | Frank Whittle | Improvements in or relating to floating structures |
| US3537412A (en) * | 1969-06-30 | 1970-11-03 | Homer I Henderson | Stabilizer for marine vessels |
| JPS5216320B2 (en) * | 1971-10-09 | 1977-05-09 |
-
1978
- 1978-03-29 DE DE19782813459 patent/DE2813459A1/en active Granted
- 1978-03-30 GB GB12371/78A patent/GB1603224A/en not_active Expired
- 1978-04-03 NL NLAANVRAGE7803514,A patent/NL186501C/en not_active IP Right Cessation
- 1978-04-10 IT IT67794/78A patent/IT1156948B/en active
- 1978-04-12 FR FR7810762A patent/FR2387157A1/en active Granted
- 1978-04-12 AU AU34990/78A patent/AU524242B2/en not_active Expired
- 1978-04-12 FI FI781119A patent/FI68193C/en not_active IP Right Cessation
- 1978-04-13 CA CA301,035A patent/CA1096710A/en not_active Expired
- 1978-04-13 JP JP4375178A patent/JPS53128897A/en active Granted
- 1978-04-14 NO NO781317A patent/NO159647C/en unknown
- 1978-04-14 BR BR7802358A patent/BR7802358A/en unknown
- 1978-04-14 ES ES468800A patent/ES468800A1/en not_active Expired
- 1978-09-10 MX MX173057A patent/MX149140A/en unknown
- 1978-12-29 ES ES476489A patent/ES476489A1/en not_active Expired
-
1985
- 1985-01-09 SG SG28/85A patent/SG2885G/en unknown
- 1985-06-06 HK HK444/85A patent/HK44485A/en not_active IP Right Cessation
- 1985-12-30 MY MY1141/85A patent/MY114185A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SG2885G (en) | 1985-09-13 |
| JPS53128897A (en) | 1978-11-10 |
| NL186501B (en) | 1990-07-16 |
| HK44485A (en) | 1985-06-14 |
| DE2813459A1 (en) | 1978-10-19 |
| NO159647B (en) | 1988-10-17 |
| AU524242B2 (en) | 1982-09-09 |
| FI68193C (en) | 1985-08-12 |
| NL7803514A (en) | 1978-10-17 |
| FI781119A (en) | 1978-10-16 |
| GB1603224A (en) | 1981-11-18 |
| ES468800A1 (en) | 1979-09-16 |
| MY114185A (en) | 1985-12-31 |
| BR7802358A (en) | 1978-11-28 |
| NL186501C (en) | 1990-12-17 |
| FI68193B (en) | 1985-04-30 |
| FR2387157A1 (en) | 1978-11-10 |
| IT1156948B (en) | 1987-02-04 |
| IT7867794A0 (en) | 1978-04-10 |
| NO781317L (en) | 1978-10-17 |
| CA1096710A (en) | 1981-03-03 |
| AU3499078A (en) | 1979-10-18 |
| NO159647C (en) | 1989-01-25 |
| MX149140A (en) | 1983-09-06 |
| DE2813459C2 (en) | 1990-11-08 |
| FR2387157B1 (en) | 1983-11-10 |
| JPH0115439B2 (en) | 1989-03-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19990217 |