DRIVING ZONE CONTROL FOR PERSONAL WATERCRAFT

The position of a watercraft is detected by monitoring GPS position data, and the speed of the watercraft is reduced to a selected limit upon detecting that the watercraft has traveled outside of a selected boundary and is maintained until it is detected that the watercraft has been back within the boundary for a selected time interval, thereby avoiding up and down jerking motion of the watercraft which can occur when only a single location test is used to confirm that the watercraft is back in bounds. An RF transceiver and related control apparatus is employed for detecting other watercraft approaching too closely to the watercraft, and a display is provided for displaying various status and warning indications.