What regulations really apply?

Saturday April 22 nd in the afternoon: Meanwhile the lawyers were in conversation with the harbour authorities who claimed we would need to hire a ships agent and be cleared out of the harbour by migration and customs to be able to sail to international waters. We started this process however after reviewing the regulations ourselves it became clear that no permission of authorities or paperwork was needed for coastal sailing (this stretches beyond the 12 miles territorial zone). We already had a meeting with customs planned for the next morning, but they canceled this meeting themselves.