JPS6189196A - Method of protecting ship's bottom from harmful matter sticking thereto and preventing damage due to contact with hull to each other and any other objects - Google Patents

Abstract

PURPOSE:To prevent an oceanic life from sticking to a submerged part of a hull, by covering the submerged part with a sheet during mooring. CONSTITUTION:A submerged part of a hull is covered with a sheet 2 supported by floating rings 3 or the like during mooring. It is possible to effectively prevent an oceanic life such as an oyster and a barnacle from sticking to the submerged part of the hull.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention prevents harmful substances such as barnacles from adhering to ships when they are moored, and also prevents direct contact between adjacent ships and other objects.

Currently, there are two methods for preventing the adhesion of harmful substances.

The first is to apply bottom paint and occasionally clean the bottom of the ship to prevent harmful substances from adhering to it, or the second is to keep the ship on land except when necessary. However, both require enormous amounts of cost and effort.

In addition, since the shapes of ships are all different, the protective material may not be a protective material, but ships may come into direct contact with each other and cause damage to each other. The present invention was inspired by his own experience.

First of all, harmful substances such as barnacles that adhere to ships when they are moored tend to adhere to seawater in areas where the concentration of seawater is high and the water is clean. If you don't apply boat bottom paint, it will stick in a week. Recently, good paints have been researched and some good ones are on the market, but they all lose their effectiveness within six months to a year after being applied, and if they are not reapplied, harmful substances will adhere to them. By the way, it costs 10,000 to 30,000 yen to paint and 20,000 to 40,000 yen to raise and lower the hull. If you store it on land as mentioned earlier, you will need at least 100,000 yen a year. Additionally, if harmful substances adhere to the vessel, water resistance during navigation will increase, greatly affecting ship speed and reducing fuel efficiency.

Therefore, it is surrounded by a sheet that matches the shape of the ship under the water (1) (2) and several floating rings are attached to it to float the sheet itself (3). The sheet should be raised above the water level to prevent seawater from entering (4). By removing the water between the seat and the bottom of the ship with a pump, harmful substances will no longer adhere to the bottom of the ship.

Nowadays, ships have decks (5), and even ships without decks are covered with sheets (6) to prevent rainwater from accumulating inside the ship, so it flows into the sheets outside the ship.

Therefore, the water in the sheet has a low salt concentration and no harmful substances adhere to it. Also, since the water in the sheet is always the same water and does not flow, there is no need to pump it out again. Even if too much water enters due to heavy rain, etc., it will overflow.

This completely prevents harmful substances from adhering to the bottom of the ship. It is economical because there is no need to paint or clean it, it does not take much time, the ship's speed does not change, it does not put strain on the engine, and it saves fuel.

Neighboring ships are of different shapes and collide with each other, which can damage the hull, but this can be protected by floating on the water surface. It is also more effective than conventional protective materials and can withstand flowing objects.

The present invention can be effectively used particularly for small ships.

4. Practical method As shown in Figure 4 A to D, slide the protective sheet from the ship's owner to the stern, and tighten it with ropes in the front, back, left and right at the predetermined position, and then attach the protective material to the stern.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a ship and the present invention. FIG. 2 is also a plan view. FIG. 3 is a plan view of the present invention. FIG. 4 sequentially shows a practical method of the present invention.

Claims (1)

[Claims] When a ship is moored, the part of the ship that is in close contact with the water surface (1) is covered with a sheet (2) to prevent the adhesion of harmful substances, and several floating rings are attached to the sheet (3) to prevent adjacent ships and other objects from attaching. How to avoid direct contact.