Boat to Igoumenitsa:

Our experience has learned us that the quickest way to get to Antalya is to take the ferry from Ancona, Italy, to Igoumenitsa, Greece. From there it's about 1500 kilometers to Antalya.

Boat to Cesme:

From Ancona, Italy, you can take the ferry to Cesme, Turkije. Cesme is about 500 kilometer away from Antalya.
Ancona is about 1.470 kilometer away from Utrecht, The Netherlands.

Click this link for more information : superfastferry