Deep Towed Acoustics Geophysics System (IMAGE) Naval Research Laboratory Caption NRL scientists and R/V Cape Hatteras crew deploy the Deep Towed Acoustics Geophysics System (DTAGS) after it is outfitted with an aluminum landing plate that couples the sound energy generated by DTAGS directly into the seafloor. The large orange sphere is one of the floats used in the seafloor-mounted vertical hydrophone arrays, which listened to the sounds generated by DTAGS and their echoes off the seafloor. Credit Naval Research Laboratory Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.