Remotely Operated Vehicle (ROV) SuBastian, reporting for diving! Did you know that an unmanned vehicle like our ROV has the ability to stay underwater up to many days at a time? All the while it can broadcast a continuous stream of images and data from instruments measuring water clarity, light penetration, and temperature. Dives can be impacted by depth and weather, but broadly speaking, there are no limits on how long an ROV can stay down. On average, SuBastian's dives last around 8-hours, whereas a dive in a human occupied vehicle typically lasts no more than 5-hours.