This technology is a system utilizing Garmin eTrex 20 GPS receiver to be located on the fishermen boat that will alert boats when they are close or beyond fishing borders. This software is designed as a monitoring system for fishing boats. The Garmin eTrex 20 GPS receiver is able to act as location reader by providing coordinates for the monitoring software demonstrated by Matlab. This system is accurate in locating fishing boats. The system complements current commercial GPS receiver systems by helping fishing boats to stay within fishing border.