These underwater machines are controlled by a person typically on a surface vessel, using a joystick in a similar way that you would play a video game. A group of cables, or tether, connects the ROV to the ship, sending electrical signals back and forth between the operator and the vehicle.
Most ROVs are equipped with at least a still camera, video camera, and lights, meaning that they can transit images and video back to the ship. Additional equipment, such as a manipulator or cutting arm, water samplers, and instruments that measure parameters like water clarity and temperature, may also be added to vehicles to allow for sample collection.
https://oceanexplorer.noaa.gov/facts/rov.html
ROV Equipped with SubC Camera Maps World War Era Shipwrecks
ROV Étáin was used in a mission to gather high-definition footage and build a 3D model of unknown shipwrecks off the Irish Coast. The survey was able to successfully locate and gather footage from three shipwreck sites between 80 and 200 meters below the surface. They are thought to be a World War I era ocean liner SS Canadian, a German U-Boat, and an armed cargo vessel.
The SS Canadian was sunk on a voyage from Boston to Liverpool in 1917 and the large debris field that was discovered suggests a violent impact with the seabed. The German U-Boat, U-58, was sunk by US destroyer Fannin, also in 1917. Most of the German crew survived and were interned in America until the end of the war.
https://www.subcimaging.com/case-studie ... shipwrecks
Small ROVs for explorations like lakes, ponds etc,,,
Enjoy projects
