"2019-07-23 16:27:45.0" . "false" . . "accepted"@en . . "" . . "SDN:S04::S04500" . "SDN:S04::S04500" . "2" . "2" . . "2019-07-23 16:27:45.0" . "An upward-facing echo sounder that is mounted on a semi-rigid mooring tethered to the seafloor."@en . . "SDN:S04::S04500" . "semi-fixed moored inverted echo sounder"@en .