Today's boats depend seriously on advanced electronics—from GPS and radar to receivers and autopilot systems. Unfortunately, these sensitive machines are especially susceptible to voltage rises brought on by lightning. To help protect these programs, surge suppressors and lightning arrestors can be mounted on key circuits. Some boaters also prefer to remove and keep valuable electronics when maybe not in use during stormy conditions. Also with these steps, it's important to keep in mind that number system is foolproof. Lightning protection greatly decreases the risk, but doesn't eliminate it entirely. boat lightning protection