. . . . . "TOPAS parametric sub bottom profiler is a high spatial resolution system designed for use in depths from 10 metres to full ocean depth operation. The system is based on low frequency signal generation, high bandwidth (~80%), narrow beam profile and absent side lobes. Comprises of a transducer, transceiver unit, operator console and optional multi-channel receiver or beam former."@en . . . "TOPAS 18" . "TOPAS 18"@en . "accepted"@en . . "SDN:L22::TOOL0859" . "Kongsberg (Simrad) TOPAS PS018 sub-bottom profiler"@en . . . . . . . . . .