University of Delaware marine scientists will use the 83-inch-long, 240-pound DOERRI (Delaware Oceanographic and Environmental Research Remote Instrument) to map the floor of the Black Sea off Sevastopol, Ukraine, on missions up to 14 hours long and depths up to 200 meters (656 ft). The goal is to learn more about hidden geological features, ancient trade routes, and its maritime history. Maybe even a shipwreck or two. On-board sensors measure salinity, temperature, and oxygen levels, while two types of sonar systems map the sea floor. Redundant processors are also employed to ensure the craft's safe return.