A waiting room years ago I pivked up a Nat. Geo. to read and it featured Cuba 's wrecks and the weath of them.
Non Cuban divers (a hobby /passion/nonpirate type folk) were having a challenging time modding repairing and trying to cobble dive equipment.
No they couldn't remove any relics ect. But they were diving...
The government (Castro factored highly as he dove himself... ) kept the general public and non Cuban traffic in check regarding wreck salvage or really interest in wrecks.
Anyways I thought it sucked after reading that ; for the average Cuban when there was so much laying under water. And knowing the government wasn't going to recover it and pass it around. (what one would?)
I didn't know Cuba/Castro opened the door to recoveries , under watch and control ,of course...