Неопознанное судно - тип Профессор Щёголев

This is not a page for any specific vessel.
Below are the photos of different vessels of the same design, which had not been identified (at least, by the name) when uploading.
If you have information about any vessel on these photos, please leave a comment under it.

Design:	B-80 (ПНР), тип Профессор Щёголев
Builder:	Stocznia Szczecińska im. Adolfa Warskiego
Yard number:	B80-x/xx
Built:	1970 or later
IMO:	7хххххх