Thank you, Jukka, too late or not. I heeded Petros' recommendations, found them good and useful, and went away with good pics of much of what I came for, including the GOLDEN IRIS.
In fact, in recent years I have visited (with a view on spotting ships in the mediterraean area) Istanbul, Dubrovnik, Barcelona and now Piraeus. Each destination has its own challenges, all are very rewarding indeed. (Istanbul is safely on the top of the list, though.)
cheers
Uwe