Shipyard
Many studies have shown that painting is what generates almost half dangerous waste at a shipyard due to using high-pressure equipment to wash or remove any unwanted material that is on it like rust. Which will eventually make its way to the water and creates water pollution to the environment. Once these have compromised the surface of the hull the ship must go to the shipyard for maintenance. In a study in 2011 samples of sediments were collected from two sites in coastal marine area of Yongho Bay, one from the shipyard yard and the other 500m away. These results had analyzed that both samples contained metals that included Al, Fe, Li, V, Cr, Mn, Ni, Cu, Zn, As, Cd, Sn, and Pb. In addition, it had been confirmed that the concentration was higher in the first sample that was by the shipyard then the sample taking 500m away and was due to paint fragments applied to the steel ship hulls.
Samsung Heavy Industries
SHI operates manufacturing facilities at home and abroad, including ship block fabrication factories in Ningbo and Rongcheng, China. The Geoje Shipyard in particular, SHI's largest shipyard in South Korea, boasts the highest dock turnover rate in the world. The largest of the three docks, Dock No. 3, is long, wide, and deep. Mostly ultra-large ships are built at this dock, having the world's highest production efficiency with yearly dock turnover rate of 10 and the launch of 30 ships per year.