A new device for monitoring moorings

Abstract

A new device - Mooring Monitoring Unit (MMU), which consists of an inwater unit and a deck unit has been designed to monitor mooring in situ. This device helps tracing underwater moorings, once its marker buoy is removed either by accident or theft. The inwater unit of MMU can be easily attached to the mooring line. It produces acoustic signals at desired intervals. These signals are received through a hydrophone receiver of the MMU's deck unit which converts them in to audible sound signals. The signals also activate an LED on the deck unit