the gold coins and chains were in the wreck of a Spanish sailing ship from the 18th Century. The wreck was located in shallow waters 140 meters off the coast city of Fort Pierce. ...said the ship was part of a Spanish fleet, which sunk in 1715 on the way back from Cuba in a hurricane. Eleven ships sunk, thousands of people lost their lives. There was treasure worth a total of about $ 400 million from where previously items worth $ 175 million were already recovered.