ASA issues a license (the IPC) if you have already passed ASA 101, 103 and 104, it's not an ICC per se but accepted as equivalent by European charter bases. You just have to pay a few and they make you join ASA.
https://asa.com/international-proficiency-certificate/We did a Greece charter aboutt 10 years ago... opted for a Sunsail flotilla and was not sorry, as the support with mooring and communicating with harbor masters was much appreciated.
We have a Croatia charter planned this summer, will also be joining a Sunsail flotilla, so unfortunately 4-cabin boat for just the 2 of us. We may be looking for crew :-)
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