The ability to test algorithms and sensors under rigorous field conditions can demonstrate application and identify challenges and provides advantage to research funding proposals. The Jacques Cousteau National Estuarine Research Reserve, a state-federal partnership program administered by Rutgers, operates a propeller-driven battery powered REMUS-100 autonomous underwater vehicle (AUV) capable of speeds to 2.6 m/s with precisions depth, altitude-over-bottom, speed, turning, and loiter control for missions up to 12 hours and 65 km. Recent developments provided a hardware/software stack and communications protocol that bridges user needs with the proprietary native navigation system, allowing the development of payload-control by researchers. A recent study of fish telemetry provides an example: Information on the identity, timing, and sound pressure level of detections received from acoustic transmitters implanted in fish, as well as current vehicle state, are used in a decision process for further vehicle action meant to safely create a synthetic aperture to geolocate the transmitter. The AUV is equipped with high-quality side-scan sonar, acoustic Doppler velocity profiler, and other sensors to study the environment and to aid in navigation. Guest ports with power and data flow can host additional novel sensors, including integrated or parasitic test payloads. Additionally, user-designed missions can provide unique data sets and test cases for experiments outside of the robotics and sensor engineering fields, such as multi-label classification and machine learning. The presentation will describe vehicle capability and specifications as well as access and field support for interested users.