Sensors and Detectors
A number of marine-security systems interface with a variety of sensors to monitor your boat. The GOST NT-Evolution 2.0 SM package from Global Ocean Security Technologies (gostglobal.com), with a price tag of about $5,000, interfaces with up to 64 wireless sensors. Along with a siren, high-intensity strobe, and pair of remote-key fobs for arming and disarming, it includes infrared motion sensors, a high-water sensor, a door or hatch sensor, and a pull sensor that detects if the boat pushes away from the dock. The system also detects if someone disconnects the boat batteries, if the battery voltage gets low, or if the boat starts to take on water. You can even link an optional smoke detector for added peace of mind.