The University of Sydney’s Australian Centre for Field Robotics (ACFR) is leading the IMOS AUV Facility and has an ocean going Autonomous Underwater Vehicle (AUV)called Sirius capable of undertaking high resolution survey work. This platform is a modified version of a mid-size robotic vehicle called Seabed built at the Woods Hole Oceanographic Institution. The submersible is equipped with a full suite of oceanographic instruments, including a high resolution stereo camera pair and strobes, a multibeam sonar, depth and conductivity/temperature sensors, Doppler Velocity Log (DVL) including a compass with integrated roll and pitch sensors, Ultra Short Baseline Acoustic Positioning System (USBL) and forward looking obstacle avoidance sonar. As part of IMOS, the vehicle will be enhanced with a Wetlabs Eco Puck, measuring chlorophyll-a, CDOM and scattering (red), and an Aanderaa Optode, measuring dissolved oxygen concentrations.