Saltwater is an electrolyte that speeds up the process of rust and corrosion. SeaShield is an automated drone system designed to slow the corrosion process by autonomously applying a corrosion inhibiting liquid to problem areas on a naval vessel. The drone carries a liquid payload to a problem area, applies the liquid in a methodical, overlapping spray pattern for maximal coverage, and returns to its home station. The process is fully automated, but can be observed from an Android application and manually overridden if necessary. The SeaShield system utilizes image sensors and computer vision to identify corrosion and a positioning system to log rust location and chart flight paths.