. "Knudsen 320BP echosounder"@en . "false" . "SDN:L22::TOOL0891" . "1" . "The Knudsen 320B/P Echosounder Transducer is intended for deepwater profiling. This device operates in the 3.5 to 250kHz frequency range."@en . . "2015-06-18 14:42:56.0" . "320B/P" . "320B/P"@en . . "SDN:L22::TOOL0891" . "1" . . . "2015-06-18 14:42:56.0" . . . "SDN:L22::TOOL0891" . "accepted"@en . .