Editing Oscar-class submarine (section)

===Project 949A ''Antei'' (Oscar II)===
{{Stack|[[File:Oscar II class SSGN.svg|thumb|Project 949A]]}}
Eleven Project 949A ''Antey'' submarines were completed at [[Severodvinsk]], of which five were assigned to the Soviet Northern Fleet. At one stage it had been planned to develop a new fourth-generation follow-on to the Project 949A, but this plan was later dropped. The external differences between the two classes were that the 949A class is about {{convert|10|m}} longer than its predecessor (approximately {{convert|154|m|disp=comma}} rather than {{convert|143|m|disp=comma|abbr=on}}), providing space and buoyancy for improved electronics and quieter propulsion.

Some sources speculate that the acoustic performance of the Oscar II class is superior to early {{sclass|Akula|submarine|4}} but inferior to the ''Akula II'' class as well as subsequent (4th generation) designs.<ref>{{cite web|url=https://fas.org/blogs/security/2009/11/subnoise/ |title=China's Noisy Nuclear Submarines » FAS Strategic Security Blog |publisher=Fas.org |access-date=2013-03-24 |archive-url=https://web.archive.org/web/20140715065441/http://fas.org/blogs/security/2009/11/subnoise/ |archive-date=2014-07-15 |url-status=live }}</ref> It also has a larger fin, and its [[propeller]]s have seven blades instead of four.<ref name="fas" >{{cite web|url=https://fas.org/nuke/guide/russia/theater/949.htm |publisher=[[Federation of American Scientists]] |title=Project 949 Granit / Oscar I; Project 949A Antey / Oscar II |access-date=2011-12-30 |archive-url=https://web.archive.org/web/20111227151256/http://www.fas.org/nuke/guide/russia/theater/949.htm |archive-date=2011-12-27 |url-status=live }}</ref>

Like all post-World War II Soviet designs, they are of [[Submarine hull|double hull]] construction.<ref>{{cite web |url=http://warfare.be/?lang=&linkid=1763&catid=305 |title=949 /A Oscar I/II class |publisher=warfare.be |access-date=1 January 2012 |archive-date=25 February 2023 |archive-url=https://web.archive.org/web/20230225165210/http://warfare.be/?lang=&linkid=1763&catid=305 |url-status=live }}</ref> Similarly, like other Soviet submarine designs, Project 949 not only has a [[bridge (nautical)|bridge]] open to the elements on top of the [[sail (submarine)|sail]] but, for use in inclement weather, there is an enclosed bridge forward and slightly below this station. A distinguishing mark is a slight bulge at the top of the fin. A large door on either side of the fin reaches this bulge. These are wider at the top than on the bottom, and are hinged on the bottom. The [[Federation of American Scientists]]<ref name="fas" /> reports that this submarine carries an emergency crew escape capsule; it is possible that these doors cover it. The VSK escape capsule can accommodate 110 people.<ref>{{cite web|url=http://www.thedailybeast.com/newsweek/2000/08/27/a-mystery-in-the-deep.html |title=A Mystery In The Deep |website=[[The Daily Beast]] |archive-url=https://web.archive.org/web/20120116094829/http://www.thedailybeast.com/newsweek/2000/08/27/a-mystery-in-the-deep.html |archive-date=16 January 2012 |access-date=6 September 2017}}</ref>