Requirements for a practical system to evaluate ship bottom coatings are listed. Panel trials are shown to be better than service trials for coating evaluations.

Application of the d-c technique of coating evaluation is illustrated by comparison of three coating systems in static immersion and by a study of the influence of number of coats on performance.

Investigation of drydock variables shows the reduction in coating performance resulting from rusting and the detrimental effect of 5 percent H3PO4 as an inhibitor after sandblasting. 2.1.2

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Copyright 1959 by the National Association of Corrosion Engineers.
1959
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