Corrected entry: As Red October enters the river, a large sonar dispenser pod can be seen on the rudder. Typhoon class subs don't have those. The large tear-shaped towed array dispensers are present on Sierra II and Akula-class submarines, but not Typhoons.
Doc
20th Jan 2015
Correction: The Red October is a brand new design, not a typical Typhoon class. She has many new features, such as the caterpillar drive, so it's entirely possible that she has such a sonar array.
wizard_of_gore ★