[25] Subsequent to your early MBES bathymetric surveys and at time when one frequency side scan sonar experienced begun to make superior quality photos of your seabed that were effective at supplying a diploma of discrimination between differing kinds of sediments, the probable from the echo amplitudes from the MBES https://claytonwsdfe.thezenweb.com/an-unbiased-view-of-hydrographic-survey-70467415