In this "remarkable sharp sunny view taken from shore side" ;) we can see two things that distinguish "Jastarnia Bór" among "Hel" class ships:

slanted supports of fore navigation lights' mast are missing, at least from year 1985:
http://nok-schiffsbilder.de/modules/myalbum/photo.php?lid=33614
It will remain so until the end in 1997.

fore navigation lights' mast, columns between Holds No.1 and No.2 and radar mast are painted white - from at least year 1991.

Such details are sometimes helpful, when identifying from a distance, like in following picture, taken in Gdynia harbour. The picture was on cover of a memory book, issued in 2016 by municipality of Radzionków. "Jastarnia Bór" is visible just under bow of m/s "Radzionków".
http://www.radzionkow.pl/images/aktualnosci/2017/zdj486.jpg

I sailed on this ship in 1972 from Hong Kong to Rotterdam. The ship also had accommodation for several passangers. I was 14 at the time.