What does E-2 cover in the context of corrosion prevention?

E-2 specifically addresses Cathodic Protection, which is a vital approach in preventing corrosion in marine environments. The principle of cathodic protection involves the use of a sacrificial anode or impressed current to protect metal surfaces from corrosion. In marine applications, metals like aluminum, steel, and bronze are frequently subjected to corrosive elements, making effective cathodic protection essential for maintaining the integrity of vessels and marine structures.

By applying cathodic protection techniques, the electrical potential of the metal surface is altered, reducing its tendency to oxidize and corrode. This method is particularly important when considering the harsh conditions present in saltwater environments, where the rate of corrosion can significantly increase without proper protective measures in place.

This focus on cathodic protection sets E-2 apart from the other choices, which while related to corrosion, do not specifically cover the prevention methods for corrosion in the same targeted manner as E-2 does.