Although considerable progress has been made in reducing corrosion of exterior ship hulls and tanks, little progress has been made on superstructure or interior surfaces. The use of thin scantling and thin shelled construction for high speed ships makes the internal corrosion problem more important than ever. Mild steel hulls now generally used must have a coating of high integrity if they are to resist corrosion even when cathodic protection is provided. Problems associated with decks, dissimilar metal fittings, aluminum superstructures, bilges, voids, and other internal areas are discussed. Examples of corrosion damage are reported because of poor coatings. The problems peculiar to space behind fitted instruments and furniture, especially those involving insulation are discussed. How decks corrode under covering presently used is described. 8.9.5.
Corrosion aboard ships has been a serious problem for the 100 years since iron and steel construction first became common and probably before that to...
