Its the first country he stopped in. That is the country of jurisdiction NOT the country you left from nor the country you wish to be imprisioned.
Remember that because its quite important if anything happens at sea sail to the jusrisdiction you want... even if you have to sail a looooooong way.
Good to know and very interesting. I don’t think you are a lawyer (take it as a compliment), and you may not know the answer. And this is in no way challenging your assertion. So if this boat had sailed to the Dominican Republic then left without being charged, is the DR the only place that has jurisdiction to prosecute any possible crime?