JPS5493580A - Shipping for frozen sea - Google Patents
Shipping for frozen seaInfo
- Publication number
- JPS5493580A JPS5493580A JP15814877A JP15814877A JPS5493580A JP S5493580 A JPS5493580 A JP S5493580A JP 15814877 A JP15814877 A JP 15814877A JP 15814877 A JP15814877 A JP 15814877A JP S5493580 A JPS5493580 A JP S5493580A
- Authority
- JP
- Japan
- Prior art keywords
- draft
- turning
- projections
- ice
- stem portion
- 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.)
- Granted
Links
Landscapes
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
PURPOSE: To reduce ice breaking resistance in case of rectilinear propagation while displaying sufficient turning performance when turning, by mounting projections for breaking ice plates, which are provided with specified conditions, to a stem portion.
CONSTITUTION: A distance LB up to a starting point M of the widest portion of a hull from stem FR in a rectilinear propagation draft WL1, a draft of normal sailing, and height H from the rectilinear propagation draft WL1 of projections are each made to be LB=0.27LppW0.34Lpp and H≤1.19h (Where, Lpp=the length of a ship and h=mean ice thickness). The projected width W of the projections is made to be W/Lpp=Lpp8R (Where, R=the radius of the minimum gyration of the ship) or W>Lpp=0.0125W0.025. The projections 2, 2 are mounted to a broadside of a stem portion so that the ship widest portion in a turning draft of the stem portion be included. Consequently, ice is broken by utilizing the stem portion when rectilinear propagation sailing, and ice is broken by the projections mounted to the stem portion by adjusting draft to the turning draft when turning, thus obtaining wide open sea surfaces, then allowing smooth turning.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15814877A JPS5493580A (en) | 1977-12-30 | 1977-12-30 | Shipping for frozen sea |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15814877A JPS5493580A (en) | 1977-12-30 | 1977-12-30 | Shipping for frozen sea |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5493580A true JPS5493580A (en) | 1979-07-24 |
JPS617396B2 JPS617396B2 (en) | 1986-03-06 |
Family
ID=15665299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15814877A Granted JPS5493580A (en) | 1977-12-30 | 1977-12-30 | Shipping for frozen sea |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5493580A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002337785A (en) * | 2001-05-16 | 2002-11-27 | Nkk Corp | Icebreaker |
JP2008521685A (en) * | 2004-12-31 | 2008-06-26 | 広州広船国際股▲ふん▼有限公司 | Hull |
-
1977
- 1977-12-30 JP JP15814877A patent/JPS5493580A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002337785A (en) * | 2001-05-16 | 2002-11-27 | Nkk Corp | Icebreaker |
JP4494670B2 (en) * | 2001-05-16 | 2010-06-30 | ユニバーサル造船株式会社 | Icebreaker |
JP2008521685A (en) * | 2004-12-31 | 2008-06-26 | 広州広船国際股▲ふん▼有限公司 | Hull |
Also Published As
Publication number | Publication date |
---|---|
JPS617396B2 (en) | 1986-03-06 |
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