An earlier look at this mystery vessel at Terneuzen.
http://www.shipspotting.com/gallery/photo.php?lid=3200497
Thanks to member Manfred (and to seaweasel for their photos), now known to be QUEEN DELILAH (last known name), originally the cargo vessel VERWISSELING, built 1923 by Smit, Foxhol

In 1975 converted to passenger vessel with subsequent names LINQUENDA III, DANMARK, DANMARK SC and QUEEN DELILAH.
More details now at above link and at
https://www.debinnenvaart.nl/schip_detail/6867/
https://goo.gl/maps/g7RT2AoUyukDabej6