Underwater Welding Drone

This invention concept pertains to an underwater drone that welds or cuts metals, for example to cut up a shipwreck, and bring the pieces of the ship back to the surface. The drone would work by having autonomous systems that can automatically cut up large pieces of the shipwreck, or weld things, in a variety of different sizes of drones that conduct underwater welding, for different applications. The drones would be able to load a large piece of the cutup shipwreck onto its drone, and bring it back up to the surface. The drone would have ballast tanks that would fill up with air, or water, and a technology to obtain oxygen from the water, through desalination, to fill up the oxygen tanks, would also be used to bring large pieces of metal to the surface. Additionally, there would be a crane and winch system attached to a ship, with communication cables, or through wireless communications, however the crane and winch system would allow even larger pieces of the shipwreck to be brought up to the surface, by attaching cables and harnesses to the cutup pieces of the shipwreck, down deep below the water.