申論題

 The Special/Renewal Survey concentrates on examination in association with thickness determination. The report of the thickness measurement is recommended to be retained on board. Protective coating condition will be recorded for particular attention during the survey cycle. From 1991 it is a requirement for new ships to apply a protective coating to the structure in water ballast tanks which form part of the hull boundary, and, since 2008, all dedicated seawater ballast tanks are to be coated during construction in accordance with the PSPC(Performance standard for protective coatings for dedicated seawater ballast tanks in all types of ships and double-side skin spaces of bulk carriers), adopted by the Maritime Safety Committee by resolution MSC.215(82).