Octopus

The Octopus is a French-built active and passive submarine sonar array, part of the Eledone family of sonars, and derived from the Thomson-Marconi TSM-2272 Eledone.

The Octopus provides passive searching to determine the bearing of targets; interception of low- and medium-frequency sonar signals from surface ships and other submarines, and high-frequency signals from enemy torpedo acoustic heads; and active determination of range after a passive determination of bearing has...