Hi AriesDW,
if you reach the estuary of the river Maas from the open sea, heading for Rotterdam, you will pass Europoort on starboard - and Hoek van Holland (The Hook) on portside, just at the beginning of the Nieuwe Waterweg. The very first berth was originally built for the Stena HSS, but she was withdrawn from service a few month ago. The next berthes are for the new "Stena Hollandica"-twins.
Cheers