BlueBottle USVs are a new generation of ocean drones able to power large payloads, roam widely and stay at sea for months at a time
Source

BlueBottle is basically a small boat powered by a sail that has solar panels to power the entire system of surface cameras and scanners that make this USV capable of carrying out missions and tasks of investment and surveillance. In addition this autonomous boat can also be used to transport cargo from one place to another because it has a payload quite high.