... echosounder. EdgeTech 4125 towed side-view sonar. Applanix POS MV 320E integrated navigation system. SVP70 sound velocimeter sensor (installed in a SeaBat 7125 sonar’s antenna bulb). min SVP sound velocimeter sensor. TRIMBLE R7 nav receiver. Project 19920E is capable of carrying out all kinds of hydrographic tasks to support the fleet on harbor’s routes, inland waters and local water areas.