Playlist 7 Videos MARTAC Sea Serpent Sonar 2:01 MARTAC Mantas and Devil Ray USVs at Sea Air Space 2022 5:29 See MANTAS/Devil Ray in action 4:42 Port of Tampa Bay Hydrographic Surveying and Autonomous Escort Demo Recap 7:33 MARTAC's Devil Ray Performs the Fastest Autonomous International Run Ever. 2:26 Devil Ray Expeditionary Class 4:36 The MARTAC Difference 2:13