Неопознанное судно - проект 1350, тип Радужный

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:	1350, тип Радужный
Builder:	Хабаровский судостроительный завод, п/я-7687
Built:	1972 or later