Posted on 5/31/2023
After a ship has finished a long voyage, a thick layer of fouling adheres to the hull shell below the draft line.
The fouling layer is usually composed of algae and shellfish, which is tight and hard. When ship maintenance is carried out, the coating, dirt, old paint, rust, etc. are usually removed from the hull, and then apply new paint. In the past, the workers used to remove the dirt layer and coating by hammering, but the maintenance period is quite long while the labor intensit...