Effect of Water Pressure on the Performance of Bottom Paint

Abstract

For bottom Paint, resistance against hydraulic pressure is of great importance because of their severe employment in deep sea and in high velocity flow. Therefore, we have tested their water-absorption and -penetration qualities on several kinds of bottom paint in water of 5 to 30 atmospheric pressure and of room temperature. The results are as follows: (1) Polyvinyl and Neoprene coatings are most excellent. (2) Some coatings of silver enamel type are also of high resistance. (3) Ordinarily coated bottom paints (oil paints) are more resistive than ordinary anti-corrosive paint coatings.