Title:
STERN SHAPE
Document Type and Number:
Japanese Patent JP3194404
Kind Code:
B2
Abstract:
PURPOSE: To suppress hull resistance and reduce the degradation of propulsion performance to the minimum by forming the stern into cylindrical shape large enough to enclose a propeller shaft direct-coupled auxiliary machine in the position thereof, extending this cylindrical shape toward the bow so as to intersect hull shape, and contracting the cylindrical shape toward the stern so as to be in conformity with the shape of a propeller boss.
CONSTITUTION: Since a propeller shaft direct-coupled auxiliary machine 3 is provided near the stern bulkhead 4 of a propeller shaft 2 rotated by a main engine 1, the propeller shaft direct-coupled auxiliary machine 3 protrudes as shown by a broken line 5 in the existing type stern shape without the auxiliary machine 3 provided. The stern shape is therefore made into cylindrical shape large enough to enclose the propeller shaft direct-coupled auxiliary machine 3 in the position of the propeller shaft direct-coupled auxiliary machine 3 as shown by a continuous line 6. This cylindrical shape is extended toward the bow side so as to intersect hull shape and contracted in conformity with a propeller boss on the stern side. As a result, degradation of propulsion performance is suppressed to about 1% compared to the existing type stern shape without the propeller shaft direct-coupled auxiliary machine 3 provided.
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Inventors:
Ryosuke Fujino
Yukio Koshiba
Yukio Koshiba
Application Number:
JP11884593A
Publication Date:
July 30, 2001
Filing Date:
May 21, 1993
Export Citation:
Assignee:
Ishikawajima Harima Heavy Industries Co., Ltd.
International Classes:
B63B1/08; B63H23/34; (IPC1-7): B63B1/08; B63H23/34
Domestic Patent References:
| JP5656499U | ||||
| JP58192200U |
Attorney, Agent or Firm:
Minoru Hotta (2 outside)