Impact of marine life on shipping
Time:
2024-03-11
Source:
We know that the sea water has a strong corrosive effect on the ship, and the marine products have a tenacious adhesion to the ship. After the ship is watered down for a period of time, a lot of marine products such as barnacles and algae and rust spots will be attached to the hull. The existence of these attachments accelerates the corrosion of the hull. On the other hand, it increases the resistance of the ship, reduces the navigation speed of the ship, and limits the warship's ability to play.
Marine attachment is a general term for animals, plants and micro-organisms that are attached to the bottom of a ship and to the surface of facilities in the sea. The micro-attached species mainly include bacteria, diatoms, protozoa (unicellular animals), chakra and thakra.
The type attached products include chlorophyta moss, also known as moss strips, moss vegetables, etc. Also known as sea vegetables, sea vegetables, sea lettuce, green vegetables, moss vegetables, etc. Porous animal sponge, coelenterate hydra, group animal moss, etc. Bivalve mollusks, oyster vines, crustacean barnacles and vertebrate seaweed, etc.
Marine attached objects are extremely harmful to ships. They increase the weight of ships, the resistance of ships during navigation, corrode ships and reduce the strength of ships. Shrink the pipe diameter of the cooling pipe and the condenser pipe of the heat exchanger of the ship, which is even completely blocked. Promote the corrosion of ship plate and ship plate welding seam, so that the sea instrument and machinery failure. Acoustic instruments are degraded or disabled due to the absorption of acoustic energy by attached organisms. Increase the accumulation of buildings in the sea, from the impact of waves and currents. Change the fixed depth of the floating body in the water source, etc., and block the hole.
The attachment of marine organisms is related to the speed of the ocean current, which is difficult to attach when the speed of the ocean current exceeds 1 sea/volume. The attachment of products is also related to ship materials. Brass, red copper and copper containing more than 65% copper are basically not attached to products.
In order to prevent the adhesion of objects, usually use chemical coating on the surface of the ship plate. or special materials. If you use the aircraft carrier Liaoning, the composite material plate is used to prevent the adhesion of the product. And it is necessary to make use of the machine to clean it in time.
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