Is it safe to sail around the world?
Is it safe to sail around the world? Is Sailing the World Safe? Sailing around the world can be extremely safe as long as you have the appropriate navigation skills, the right boat, and a good understanding of where not to go.
Is it illegal to sail in international waters?
It is not illegal per se. The consequence is you will not be owed the protections that registered ships flying a national flag will be. As you don't come under any jurisdiction, you can be approached and come under the extraterritorial jurisdiction of any other state.