At least 2 years of experience with experimental methods for ocean acoustics and sonar/communications system characterization, including planning and executing sea tests, defining objectives and metrics, specifying acoustic sources/receivers, coordinating at-sea recording and QA, assigning participant responsibilities, and managing collected data through analysis and reporting. 3+ years of experience evaluating acoustic system design and performance, including ocean propagation and noise properties, sensor transduction, front-end signal conditioning, phased array design, underwater telemetry, sonar/communications signal processing, and operator interface/data display considerations.