Thankfully, gone are the days when an able seaman would manually deploy the sounding line and call out the depth to the bottom. [Neumi]’s sounding rig uses an off-the-shelf sonar depth sounder ...

His boat was a half mile off the port of Bermagui in New South Wales when sonar used for finding fish picked up the image. It was at a depth of about 66 feet ... and Moyce did not report any dive ...