The US Navy has this same worry about a certain wreck in Pearl Harbor.
You’d think the Navy would be more vigilant.
Recently I was reading an article in World War Two Magazine
about the wreck of the Australian cruiser HMAS Canberra which was lost in action during The Battle Of Savo Island in 1942.
Looters and salvage hunters have made off with the whole wreck! The entire wreck is gone.