[Many Souffan]

Hello Dénes.

I don't know if your question is for me ? It is already difficult, because the tables are in Russian. However I will try to answer you by deduction.

If it was the same reference that in French Armée de l'Air, B-3 means Bomber with a crew of 3 mens, as DB-3 / Il-4, Pe-2, SB-3 or less known Yak-2.

Thank you.