Novel bulbous bow with multi-draught resistance

A ball nose and performance technology, which is applied to the hull bow, hydrodynamic characteristics/hydrostatic characteristics, ships, etc., can solve the problems of difficulty in taking into account resistance performance, deterioration of resistance performance, and complex design at the same time, so as to reduce ballast. The effect of draft resistance
CN104890809AActive Publication Date: 2015-09-09708TH RES INST OF CSSC
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
708TH RES INST OF CSSC
Publication Date
2015-09-09

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Abstract

The invention discloses a novel bulbous bow with multi-draught resistance and belongs to the field of ship design. The novel bulbous bow is applicable to ships with various navigational draught conditions; each ship has a ballast draught state and a designed draught state. A transverse profile of the bow is concave around a ballast draught height; between the ballast draught height and the designed draught height and close to the designed draught height, the transverse profile is convex. The novel bulbous bow according to the technical scheme has the advantages that ballast draught state resistance is evidently improved, the designed draught and structural draught resistances are kept unchanged substantially, comprehensive oil cost of the multi-condition operating ship is lowered, economy is improved, and emission is reduced.
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Description

technical field

[0001] The invention belongs to the field of ship design, and relates to a bow shape structure of a ship, in particular to a bow shape structure of a ship with various sailing draft working conditions. Background technique

[0002] Due to the slowdown in global economic growth and the long-term downturn in the international shipping market, various shipping price indexes have continued to decline, and the profit margins of shipping companies have been greatly reduced. At the same time, in the face of the pressure of the EEDI (Energy Efficiency Design Index) rules of the International Maritime Organization, shipowners strongly hope to improve the comprehensive operational performance of new ships to reduce fuel consumption costs and meet the requirements of the new rules.

[0003] Since transport ships generally sail in various draft states in actual operation, in order to obtain the best comprehensive performance, the hull shape design must take into account ...

Claims

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