System 117 B 

 one year 



System 119 

 one year 



(a) System 117 after 400-day exposure. (b) System 119 after 400-day exposure. 



Figure 1. Two exposed panels. 



The coating systems that were employed in the experiments discussed 

 below consisted of a variety of organic coatings of different generic types. 

 Included were four vinyl systems, four epoxy systems, two phenolic systems, 

 and three other systems. All these systems had been exposed and evaluated in 

 marine atmospheric environments,^"^ and most of the systems also had been 

 exposed in seawater.^"* The systems are described in Table 1 . The coatings 

 were essentially the same thickness as those exposed in the field. One exception 

 is System 120, which was applied approximately twice as thick for the electrical 

 measurements. 



