Editing Seawolf-class submarine (section)

== Design ==
The ''Seawolf'' design was intended to combat the threat of advanced Soviet ballistic missile submarines such as the {{sclass2|Typhoon|submarine|4}}, and attack submarines such as the {{sclass2|Akula|submarine|4}} in a deep-ocean environment. ''Seawolf''-class hulls are constructed from [[HY-100]] steel, which is stronger than the [[HY-80]] steel employed in previous classes, in order to withstand water pressure at greater depths.<ref>{{cite book|last = Polmar|first = Norman|title = The Naval Institute guide to the ships and aircraft of the U.S. fleet|publisher = [[Naval Institute Press]]|year = 2004|location = Annapolis, Maryland|pages = [https://archive.org/details/navalinstitutegu0018polm/page/81 81]–82|edition = 18|url = https://archive.org/details/navalinstitutegu0018polm|url-access = registration|isbn = 978-1-59114-685-8}}</ref><ref>{{cite book|last = Zimmerman|first = Stan|title = Submarine Technology for the 21st Century|publisher = Trafford Publishing|year = 2000|location = Victoria, British Columbia|page = 81|url = https://books.google.com/books?id=SjfgOfV8Am0C&pg=PA81|isbn = 978-1-55212-330-0}}{{self-published source|date=January 2018}}</ref>{{Self-published inline|certain=yes|date=January 2018}}

''Seawolf''-class submarines are larger, faster, and significantly quieter than previous ''Los Angeles''-class submarines; they also carry more weapons and have twice as many torpedo tubes. The boats are able to carry up to 50 [[Tomahawk (missile family)#Variants|UGM-109 Tomahawk]] cruise missiles for attacking land and sea surface targets. The boats also have extensive equipment to allow shallow water operations. The class uses the more advanced ARCI Modified AN/BSY-2 combat system, which includes a larger spherical sonar array, a wide aperture array (WAA), and a new towed-array sonar.<ref>{{cite web|url=http://www.harpoondatabases.com/Encyclopedia/Entry2316.aspx|title=AN/BSY-2 sonar |website=www.harpoondatabases.com|access-date=5 April 2018|archive-url=https://web.archive.org/web/20141006071447/http://www.harpoondatabases.com/Encyclopedia/Entry2316.aspx|archive-date=6 October 2014|url-status=dead}}</ref> Each boat is powered by a single [[S6W reactor|S6W nuclear reactor]], delivering {{convert|45000|hp|MW|abbr=on}} to a low-noise [[pump-jet]].

As a result of their advanced design, however, ''Seawolf''-class submarines were much more expensive. The projected cost for 12 submarines of this class was $33.6&nbsp;billion, but construction was stopped at three boats when the Cold War ended.<ref>{{cite web|url=https://fas.org/programs/ssp/man/uswpns/navy/submarines/ssn21_seawolf.html|title=SSN-21 Seawolf Class|access-date=11 August 2011|work=Federation of American Scientists|archive-date=19 April 2014|archive-url=https://web.archive.org/web/20140419195730/http://www.fas.org/programs/ssp/man/uswpns/navy/submarines/ssn21_seawolf.html|url-status=dead}}</ref>