The only software that has fully implemented a series of test tank calibrations of the RESON Seabat 7125 and 7111 is the QPS FMGT app. It initially used its plugin technology to implement some specific TVG correction curves for these sonars but in the latest release those TVG curves have been built into the code. Read this for more information https://confluence.qps.nl/display/KBE/Technical+Note+2%3A+Reson+7125+and+7111+deTVG+plugin+algorithms+have+now+been+internalized