JPS57114785A - Catamaran type archimedean screw icebreaker - Google Patents
Catamaran type archimedean screw icebreakerInfo
- Publication number
- JPS57114785A JPS57114785A JP75581A JP75581A JPS57114785A JP S57114785 A JPS57114785 A JP S57114785A JP 75581 A JP75581 A JP 75581A JP 75581 A JP75581 A JP 75581A JP S57114785 A JPS57114785 A JP S57114785A
- Authority
- JP
- Japan
- Prior art keywords
- ice
- icebreaker
- archimedean screw
- skirt
- catamaran type
- 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
Landscapes
- Sealing Of Bearings (AREA)
Abstract
PURPOSE: To smooth the ice-breaking of a catamaran type Archimedean screw icebreaker when it runs on ice for breaking by covering the lower half in the front part of its hull with a skirt and sending pressurized air into the obtained space.
CONSTITUTION: The lower half in the front part of the hull of a catamaran type Archimedean screw icebreaker is covered by a skirt 11, and pressurized air is sent into a space 12 wrapped up by the skirt 11. In this construction, an ice board 14 is caught by blades 5 of an Archimedean screw 4, and the icebreaker breaks the ice by its weight as it runs on the ice board 14. At this stage, since the pressurized air is sent into the space 12 wrapped up by the skirt 11, the water level under the ice board 14 is pushed down, and the ice board is made free from the buoyancy of the water and easy to be broken.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP75581A JPS57114785A (en) | 1981-01-08 | 1981-01-08 | Catamaran type archimedean screw icebreaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP75581A JPS57114785A (en) | 1981-01-08 | 1981-01-08 | Catamaran type archimedean screw icebreaker |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57114785A true JPS57114785A (en) | 1982-07-16 |
Family
ID=11482503
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP75581A Pending JPS57114785A (en) | 1981-01-08 | 1981-01-08 | Catamaran type archimedean screw icebreaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57114785A (en) |
-
1981
- 1981-01-08 JP JP75581A patent/JPS57114785A/en active Pending
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