They did something sort of similar with the Kursk recovery, cutting off the damaged bow. https://en.wikipedia.org/wiki/Kursk_submarine_disaster
“The divers installed two large hydraulic suction anchors into the seabed and attached a high-strength tungsten carbide abrasive saw that was pulled back and forth over the bow between the anchors. It took ten days to detach the bow.” At least that sounds like a saw. Cutting a hull by dragging an anchor chain across it at seven feet per minute sounds crazy, but with engineering it’s always whatever works. These cars were manufactured in Mexico by a South Korean company. The ship departed Georgia for the Port of Baltimore. The cars were to be sold in the Middle East. So many things happen in the world.