JPS59164281A - How to modify an oil tanker - Google Patents

Abstract

PURPOSE:To permit reconstruction workl to be executed simply and in a short time by cutting and removing the upper deck of a center oil tank and extending upwardly the vertical bulkhead to form a hatch part and installing a hold bottom plate on the bottom trans in the bottom part of the center oil tank. CONSTITUTION:The part between the vertical bulkheads 23 for the upper deck 24 which covers the center oil tank 30 of an oil tanker is cut and removed, and an opened port 25 is formed in the upper part of the center oil tank. The vertical bulkhead 23 is extended upwardly, and side walls are erected at the front and rear parts, and a projected deck 29 is installed, and a hatch opening part 31 is formed. A hold bottom plate 22 having a vertical member 21 is installed onto the bottom trans 2 in the bottom part of the center oil tank. Therefore, the necessity of removing the bottom trans 2 is obviated on reconstruction, and the whole construction can be executed simply and in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an oil tanker that can be economically converted into an ore carrier. 9. Regarding the advance method.

Conventionally, when converting an oil tanker into an ore carrier, the inclined parts 3, 3 of the bottom transformer 2 at the bottom of the central oil tank 1 of the oil tanker shown in Figure 1 are removed, and a new hold bottom plate is installed as shown in Figure 2. 5 is installed horizontally, but according to this method, reinforcing members 7.8.9 (shown with hatching) are installed on the back side of the newly installed hold bottom plate 5, inside the wink crank 6.6, and at the corners of the hold bottom plate 5. It was necessary to attach the inclined plates 11 and 11 to each side, which had the disadvantage of requiring a lot of time for the remodeling work and increasing the cost of the remodeling.

In addition, if the upper deck 10 is left as is, the hold 12 cannot secure sufficient capacity, the modification cost per payload increases, and a large hatch 1 is required to facilitate cargo handling.
There were drawbacks such as the need to provide 3.

The present invention was made in order to modify the drawbacks mentioned in mJ.
The bottom transformer at the bottom of the central oil tank was left as is, and a new hold bottom plate with a longitudinal member was installed on top of the bottom transformer.In order to secure the hold capacity, the upper deck that covered the central oil tank was cut and removed to create an opening. An oil tank in which a raised deck covering the opening is newly installed on the upper deck, this raised deck is cut and removed, and the steel material from the upper deck is reused, and a hatch is provided for loading and unloading cargo (ore) on the raised deck. This is related to the method of modifying a ship, and it includes repairs such as wing tanks as in the past.
There is no need to carry out any modification work, and the removed deck can be used as a raised deck, reducing the cost of modification.Furthermore, the cross-sectional shape of the bottom plate of the hold allows cargo to be easily concentrated toward the center of the ship, improving cargo handling efficiency. There are some things that have advantages that you shouldn't get.

Embodiments of the present invention will be described below with reference to the drawings. 3 and 4 show an embodiment of the present invention, in which the bottom transformer 2 of the oil tank 1 shown in FIG. A new hold bottom plate 22 is installed via the member 21.

Also, the part between the longitudinal bulkheads 23 and 23 of the upper deck 10 that covers the central oil [1] shown in FIG.
(indicated by a two-dot chain line in the figure) is turned off! Scatter and open 2
5 will be provided.

A vertical side wall 27 is extended on the upper part of the longitudinal bulkhead 23.
is erected and a raised deck 29 is provided thereon. and a raised deck 29, a vertical side wall 27, a transverse bulkhead (or horizontal side wall) 28,
A hold 30 is formed in a space surrounded by the longitudinal bulkheads 23-23, the hold bottom plate 22, and the like. Raised deck 29 and upper deck 1
The height C between 0 and 0 is determined in consideration of the hold capacity to be secured. In addition, the raised deck 29 was cut and removed from the former central upper deck 2.
Manufactured using steel materials from No. 4. The cargo on the raised deck 29 (
A required number of hatches 31 are provided in each hold for loading and unloading (ore).

Since the hold bottom plate 22 is newly installed on the bottom transformer z and the inclined part 3 of the bottom transformer is not cut as in the conventional method, there is no need to add new reinforcing members 7, 8, 9 (see Figures 1 and 2). Reinforcement work such as 1 liter inside wing tank 6.6 can be omitted.

In addition, since the corners on both sides of the bottom of the hold are inclined along the cross-sectional shape of the bottom transformer 2, even if the opening size of the hatch 31 is made small, there is a gap in unloading. Efficiency is good).

In addition, a raised deck 29 was installed to secure cargo hold capacity.
There is no need to increase the dimension between the longitudinal partition walls 23, 23.

Furthermore, since the vertical side walls 27.27 of the raised deck 29 will be extended above the M bulkhead 23.23, the steel material from the removed central deck 24 (see Figure 1) will be reused in September. The raised deck 29 can be manufactured using the same method, and materials can be saved.

It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

The method for modifying an oil 1g vessel according to the present invention has the above-mentioned 4-ta configuration, so it exhibits excellent blowing effects.

(1) Since the hold bottom plate is installed on the bottom transformer,
The hold + 5 plates can be easily installed, and accompanying reinforcement work such as wing tanks and the inside of the double bottom can be omitted. Also, since it is convenient for gathering cargo, cargo handling efficiency can be improved.

(ii) Since the raised deck is installed on the upper deck, the required cargo capacity can be secured. The effect of item 0) can be reduced by IjF, and the modification cost can be reduced.

[Brief explanation of drawings]

Fig. 1 is a side view of an oil tanker, Fig. 2 is a cross-sectional view of an ore carrier showing a conventional modification method, Figs. 3 and 4 show an embodiment of the present invention, and Fig. 3 is an ore carrier FIG. 4 is a partially cutaway side view of the carrier ship, and is an enlarged view (cross-sectional view) along the IV-IV force direction in FIG. 3. In the figure, 1 is an oil tank inside, 2 is a bottom transformer, 10 is an upper deck, 21 is a longitudinal member, 22 is a hold bottom plate, 23 is a longitudinal bulkhead, 25 is an opening, 26 is a hull, 27 is a longitudinal side wall, 28 is the transverse bulkhead (or side wall), 29 is the raised deck, 30 is the hold, 3
1 indicates a hatch. Patent application Hitoshi Kawajima Harima Heavy Industries Co., Ltd. Figure 1 2 Figure 2 9 7 7 9 Figure 4

Claims (1)

[Claims] 1) Cut and remove the longitudinal bulkheads of the upper deck that covers the central oil tank of an oil tanker, create an opening above the central oil tank, and install a hold bottom plate with a thread 1 passage member on the bottom transformer at the bottom of the central oil tank. A full wall of the required height is erected on the upper part of the tJ & communication bulkhead and in front and rear of the opening m), and a raised deck is installed on the side wall by reusing the steel material of the upper deck that was cut and removed earlier. A method for modifying an oil tanker, characterized in that a hatch for loading and unloading cargo is provided on the raised deck.