Неопознанное судно- БМРТ тип "Космос", проект B-26

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.
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Design:	B-26 (ПНР), тип Космос
Builder:	Królewskich Zakładów Budowy Korwet
Registry:	РСССР
Registry class:	КМ(*) Л3[1] траулер-завод R717