What was the Soviet designation for the class of destroyer that is complemented by the Udaloy-class destroyer?
Udaloy-class destroyer:  They complement the Sovremennyy-class destroyer in anti-aircraft warfare and anti-surface warfare operations. Sovremennyy-class destroyer:  The Soviet designation for the class was Project 956 "Sarych" (Buzzard).
Project 956 "Sarych" (Buzzard)