6.3.1 Corrosion and wastage of steel especially
in the upper part of the topside tanks should be carefully watched.
6.3.2 Though the water ballast tanks of newer
bulk canters are well protected against corrosion, the upper portion
is susceptible to corrosion because the protective coating will be
easily deteriorated due to heat from the upper deck and the cyclic
wet/dry effect of seawater.