JPS57114785A - Catamaran type archimedean screw icebreaker - Google Patents

Catamaran type archimedean screw icebreaker

Info

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
Application number
JP75581A
Other languages
Japanese (ja)
Inventor
Masanao Oshima
Mikinaga Takagi
Masatoshi Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Engineering and Shipbuilding Co Ltd
Mitsui Zosen KK
Original Assignee
Mitsui Engineering and Shipbuilding Co Ltd
Mitsui Zosen KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Engineering and Shipbuilding Co Ltd, Mitsui Zosen KK filed Critical Mitsui Engineering and Shipbuilding Co Ltd
Priority to JP75581A priority Critical patent/JPS57114785A/en
Publication of JPS57114785A publication Critical patent/JPS57114785A/en
Pending legal-status Critical Current

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
JP75581A 1981-01-08 1981-01-08 Catamaran type archimedean screw icebreaker Pending JPS57114785A (en)

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)

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