In shipbuilding, in addition to ABS Grade B marine steel plates certified by the American Bureau of Shipping (ABS), organisations such as Bureau Veritas (BV), Det Norske Veritas (DNV) and the China Classification Society (CCS) have also certified steel plates of the same grade. These steel plates are all classified as general-purpose shipbuilding steel plates, but there are subtle differences in their standard requirements, performance specifications and applications.