The Model 837 Delta T Azimuth Drive is a rugged and powerful rotary actuator drive that can be coupled to an Imagenex Model 837 or 837B Delta T Multibeam Profiling Sonar. The two axes of rotation in this combined unit provide the capability to obtain accurate, high resolution range information in any direction. In standard applications, profiles may be made in any direction by simply commanding the Azimuth Drive to rotate the attached profiling sonar anywhere in a circle. The profiling sonar can then perform a cross-sectional scan before being rotated to a new azimuth angle. The Azimuth Drive uses the same Ethernet communications line and command structure as the Delta T head. A single, simple to use PC compatible computer program operates both.