eTrac is a company that provides hydrographic surveys, vessel positioning, and marine instrumentation solutions. Its services include bathymetric mapping, geophysical survey, dredging quality management, marine vegetation mapping, object detection, etc. The company provides TideTrac a wireless electronic water level monitoring system and TiltTrac, a waterproof and ruggedized inclinometer system. eTrac caters to marine, electronics, environment, and other sectors.