Rocks & mirror
Encyclopedia of Marine and Energy Technology

Discreet Security Alert System


The purpose of this system is to send a covert signal from a ship which will be not obvious to anyone on the ship who is not aware of the alert system. It is of use therefore in circumstances where a ship wishes to inform a person ashore of a problem with a minimum number of persons on board aware of the action. Besides the security alert function the DSAS can also be used to locate the ship throughout the world in a reliable manner.