I'm sure you're talking about the 'Geldermelsen'. My twin brother and I spent 89-days 'detained' in Indo in 1989?. The 'Golden Rule' (he who has the gun makes the rules) is what effects treasure hunting there.Indonesia
A friend of mine ended up in jail there for a couple of months. You need to know who are the honest legit underwater treasure hunters and others like William Hatcher or Tony Wells. You better do some homework.