Since beginning operation in 1973, Sonatech, Inc. has been a leader in the design and development of underwater sonar and nav ... igation equipment for the U.S. Navy and various other U.S. and foreign government, research, and military customers. Initially a supplier of long-baseline navigation equipment, with excursions into acoustic wellhead re-entry navigation, digital depth sounders, and data telemetry systems, Sonatech has since expanded its expertise into sonar systems, developing a variety of forward-looking, side-looking, obstacle-avoidance, and high resolution homing/docking sonars. read more