identification of objects

The sonar used in the survey on r/v Oceanograf is a cable towed side scan sonar (SSS) model 4200P, produced by EdgeTech, operating at two frequencies: 300 and 900 kHz with a maximum ping rate of 12 ms and 3 ms - for 300 and 900 kHz respectively. When operating at 300 kHz, the device provides a data set at a lateral range of 230 m to port and starboard, while when operating at 900 kHz - the range reaches 75 m and the image has a higher resolution. The maximum depth at which the sonar can operate is 300 m.

The r/v Oceanograf is equipped with a SeaBat 7125 multibeam echosounder (MBES) by Teledyne Reson. It can operate at two frequencies 200 and 400 kHz. The angular width of the transmitted beam for both frequencies, is 140°. The angular resolution of a single beam is 0.54°±0.03° x 1.1°±0.2° across and along the profile for 400 kHz and 1.1°±0.05° x 2.2°±0.5° for 200 kHz respectively. The maximum ping frequency reaches 50 Hz for both operating frequencies.