Are there actually places on this planet, in the ocean somewhere, where you can travel by ship and then, once you are there, there are no laws?
For example, you could lure on a bunch of little kids with candy, toys and promises of riches/fame, and then subject them to torture and rape out there in the ocean, then travel back and go free from any charge, because it was done on "international waters" and they willingly came with you?
Something tells me that's not how it works.