Automated fail-safe sea rescue flotation system

摘要

A sea rescue signaling system including a personal flotation device equipped with a GPS receiver, a satellite radio-telephone, a hydrostatic pressure detector, and a controller. When the pressure detector senses a minimum specified submersion of the device for a minimum specified duration, the controller energizes the GPS and the radio-telephone, then dials a rescue service and transmits a distress signal and position data.