Depth-variable towing sonar and procedures for operating

摘要

The present invention relates to a watercraft 10 with a towing sonar, the towing sonar having a pull cable area 30 and an antenna area 40, the pulling cable area 30 of the towing sonar being arranged between the watercraft 10 and the antenna area 40 of the towing sonar, with a first immersion body in front of the antenna area 40 20 and / or a second immersion body 20 is arranged behind the antenna area 40, characterized in that the immersion body 20 has at least one depth adjustment device.