Source: HIS SUTTON
The Pr.885 Class nuclear-powered cruise missile submarines (SSGN) (Project 08850) “Ash” (Ясень) YASEN / GRANEY Class. (NATO: SEVERODVINSK Class) represent the most modern and potent Russian submarines are and widely regarded as similar to the latest Western submarines. The closest comparison is the US Navy’s Seawolf Class but the Russian design incorporates a large bank of vertical launch tubes (VLS) for cruise missiles.
Due to the end of the Cold War, the first boat, K-560 Severodvinsk, took almost 18 years to build followed by extended sea trails. This delay does not detract from their relative modernity however although some internal systems may be dated (the same can be said of many otherwise impressive Western boats). The second boat, K-561 Kazan, has followed a more typical build schedule.
Read more at: http://www.hisutton.com/Pr885_Severodvinsk_Class.html