Corrosion of Cruise Vessel Outfitting Parts

Abstract

Corrosion causes huge costs for ship industry. Marine environment is very corrosive and the presence of marine salts accelerate corrosion and may cause local corrosion. High humidity of marine environment also has an influence on corrosion. Materials that are used in marine environment should have high corrosion resistance, or they should be protected against corrosion by coatings. Corrosion resistance in marine atmosphere of materials is important to know in ship building. It is also important to know how materials behave together due to galvanic effects. Surface preparation before coating is important since great part of coating failures are results of poor surface preparation. The aim of this thesis was to study marine corrosion and to determine the causes of corrosion on Meyer Turku ships. Corrosion related claims on pool decks and on life boat decks are investigated in the case studies. Claims are processed by Jira software which is used in Warranty section of Meyer Turku. The main causes of corrosion are divided in five groups which are flying metallic dust and other impurities, coating failure, material selection, maintenance and design. Dividing has been done by photos, by comments of warranty engineers and by other documents.