Split-beam echosounders model EK80 (38 kHz, 120 kHz and 333 kHz)
"The Simrad EK80 is the most modern ""high end"" split beam scientific echo sounder in the fishery scientific. The r/v Oceanograf vessel has three split-beam echosounders model EK80 with the 38 kHz, 120 kHz and 333 kHz transducers.
The device is used in conjunction with other supporting devices: GPS, IMU, gyro, SVP/CTD and works based on the EK80 (Simrad) software.