Figure 16. Representative ship EK80 echosounder calibration examples with full beam mapping exercise (left) and calibration results (right) displayed. Four calibrations are shown: (a) 34-45 kHz, (b) 50-85 kHz, (c) 95-165 kHz, (d) 170-260 kHz, (e) 280-380 kHz pulses. (f) show EC150-3C ADCP / echosounder system calibration. Operated as echosounder with 138-162 kHz broadband pulses. WC57.2 is used for (a), WC38.1 is used for (b), (c), (d), (f), and WC25 for (e).
