It seems this OTC trash is the only salvor who can
Post# of 7795
Divers also recovered six pieces of lead sheathing (material from the bottom of the Margarita’s hull) and a ballast stone.
This type of material gives clues about where more cargo may be resting. The silver coin, musket balls and the ballast stone are artifacts that are not influenced by weather conditions and will not move along the seafloor in storms that have happened since the day the margarita was driven into the shallow sand bar where it was broken into pieces.
https://www.mrronline.com/single-post/2018/11...VKLQXxjDxg