(Replying to PARENT post)
On a tangent: I wonder why wikipedia doesn't list the articles on boats by their original Russian names, but uses their NATO calling instead. Now you have the article "Typhoon sub" which is actually about Akula class submarines, and the article "Akula class submarine", which is about a submarine the Russians call "Shchuka".
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(Replying to PARENT post)
In the discussion page of this article is a link to a schematic drawing - although it's obviously hard to tell how accurate this depiction is: http://commons.wikimedia.org/wiki/File:Typhoon_class_Schema....
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(Replying to PARENT post)
"Typhoon class submarines feature multiple pressure hulls that simplify internal design while making the vessel much wider than a normal submarine. In the main body of the sub, two Delta class pressure hulls lie parallel with a third, smaller pressure hull above them (which protrudes just below the sail), and two other pressure hulls for torpedoes and steering gear."