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Large transport ship

A transport ship, large-scale technology, applied in the direction of transportation and packaging, hull, ship accessories, etc., can solve the problems of reduced propulsion efficiency, deterioration of maneuverability, increased load changes of propellers and main power units, etc., to achieve the effect of easy construction

Inactive Publication Date: 2003-04-09
SHIPBUILDING RES CENT OF JAPAN
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  • Claims
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Problems solved by technology

[0003] That is to say, in the case of shallow draft, such as (1) the degree of center arch increases during sailing, and the shear force and longitudinal bending moment added to the hull also become larger; (2) the bottom of the ship will be knocked by waves during sailing. (3) The propeller cannot be completely submerged in the water but exposed to the water surface, which will reduce the propulsion efficiency and increase the load change of the propeller and the main power unit (the so-called propeller speed phenomenon occurs); (4) These problems such as the rudder not being fully submerged in water and deteriorating maneuverability

Method used

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Embodiment Construction

[0046] The invention relates to large transport ships with a displacement of more than 1000 tons such as oil tankers, bulk cargo ships, container ships, liquefied natural gas ships and car carriers, especially large transport ships that do not need ballast water. Refer to each embodiment below Figure 1 to Figure 11 Description is made, but of course the present invention is not limited to these examples.

[0047] First, refer to Figure 1 to Figure 4 Example 1 of the present invention will be described below. figure 1 It is a side view showing the large transport ship of this embodiment. In addition, Fig. 2(a), Fig. 2(b), and Fig. 2(c) are diagrams showing the large transport ship, wherein Fig. 2(a) is figure 1 The A-A sectional view, Figure 2(b) is figure 1 The B-B sectional view, Figure 2(c) is figure 1 The C-C section diagram. image 3 It is a view showing the fully loaded state of this large transport ship, and is a cross-sectional view seen from the same cross-sect...

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Abstract

The present invention provides a large transport ship in which the shape of a ship bottom 1a from a bow 1h to a stem 1t, when viewed on a cross-section perpendicular to the longitudinal direction of the ship bottom 1a, is tapered towards the center CL of the ship bottom in the widthwise direction. Consequently, it is possible to resolve problems associated with changes in the draft corresponding to the state of the load, without using ballast water.

Description

technical field [0001] The present invention relates to large transport ships such as oil tankers, in particular to large transport ships that do not require ballast. Background technique [0002] On existing large-scale transport ships such as oil tankers, bulk carriers, container ships, liquefied natural gas ships, and car carriers, in order to prevent problems caused by the shallow draft of the ship in the empty state and to control the center of gravity of the ship, set The structure of the equipment ballast. [0003] That is to say, in the case of shallow draft, such as (1) the degree of center arch increases during sailing, and the shear force and longitudinal bending moment added to the hull also become larger; (2) the bottom of the ship will be knocked by waves during sailing. (3) The propeller cannot be completely submerged in the water but exposed to the water surface, which will reduce the propulsion efficiency and increase the load change of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B25/00B63B1/04B63B11/04B63B43/10
CPCB63B11/04B63B43/10B63B1/04B63B25/00
Inventor 佐藤和范武隈克义友井武人井上宪一大西重雄
Owner SHIPBUILDING RES CENT OF JAPAN
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