Editing Virginia-class submarine (section)

=== Other improved equipment ===
[[File:US Navy 040822-N-2653P-344 One of PCU Virginia's (SSN 774) new components is it's diesel generator, a Caterpillar 3512B V-12 Twin-turbo charged engine.jpg|thumb|''Virginia'' class diesel generator control panel]]
* [[Optical fiber]] [[fly-by-wire]] ''Ship Control System'' replaces electro-hydraulic systems for control surface actuation.
* [[Command and control]] system module (CCSM) built by Lockheed Martin.<ref>{{cite web |url= http://www.naval-technology.com/projects/nssn/ |title=NSSN Virginia Class Attack Submarine |publisher=naval-technology |date=15 June 2011 |access-date=26 April 2015 |archive-url= https://web.archive.org/web/20150420153602/http://www.naval-technology.com/projects/nssn/ |archive-date=20 April 2015 |url-status=live}}</ref><ref>{{cite web|last=Kearney |first=Tom|url=http://www.public.navy.mil/subfor/underseawarfaremagazine/Issues/Archives/issue_11/pcu_virginia.html |title=Status Report: PCU Virginia (SSN-774) |publisher=US Navy |date=Spring 2001 |volume=3 |number=3 |access-date=26 April 2015 |archive-url = https://web.archive.org/web/20150606034138/http://www.public.navy.mil/subfor/underseawarfaremagazine/Issues/Archives/issue_11/pcu_virginia.html |archive-date=6 June 2015 |url-status =dead}}</ref>
* The auxiliary generator is powered by a Caterpillar model 3512B V-12 marine diesel engine. This replaced the [[Fairbanks-Morse]] diesel engine, which would not fit in ''Virginia''{{'}}s auxiliary machinery room.
* Modernized version of the AN/BSY-1 integrated combat system<ref name="SSN-774 Virginia class" /> designated AN/BYG-1 (previously designated CCS Mk2) and built by [[General Dynamics]] AIS (previously [[Raytheon]]).<ref>{{cite web |url= http://raytheon.mediaroom.com/index.php?s=43&item=360 |title= Raytheon Delivers Submarine Combat System to Royal Australian Navy |publisher=Raytheon |date=30 January 2006 |access-date=26 April 2015 |archive-url= https://web.archive.org/web/20150215231030/http://raytheon.mediaroom.com/index.php?s=43&item=360 |archive-date=15 February 2015 |url-status=live}}</ref><ref>{{cite news |url= http://www.defenseindustrydaily.com/General-Dynamics-To-Upgrade-Submarine-Weapons-Control-Systems-05631/ |title=General Dynamics To Upgrade Submarine Weapons Control Systems |date=21 July 2009 |work = Defense Industry Daily |access-date=26 April 2015 |archive-url= https://web.archive.org/web/20150511021719/http://www.defenseindustrydaily.com/General-Dynamics-To-Upgrade-Submarine-Weapons-Control-Systems-05631/ |archive-date=11 May 2015 |url-status= live}}</ref> AN/BYG-1 integrates the submarine Tactical Control System (TCS), Payload Control System (PCS) (formerly Weapon Control System (WCS)), and Information Assurance (IA).<ref>{{cite web |title=AN/BYG-1 Submarine Tactical Control System (TCS) |url= http://www.gd-ais.com/Domains/ANBYG-1-Submarine-Tactical-Control-System-(TCS) |url-status=dead |archive-url= https://web.archive.org/web/20160304192350/http://www.gd-ais.com/Domains/ANBYG-1-Submarine-Tactical-Control-System-(TCS) |archive-date=4 March 2016 |access-date=26 April 2015 |publisher = General Dynamics}}</ref><ref>{{cite web |url= http://www.militaryaerospace.com/articles/2013/06/gd-cots-submarine.html |title=General Dynamics continues project to upgrade submarine electronics with COTS computers |publisher=Military & Aerospace Electronics |date=27 June 2013 |access-date=26 April 2015 |archive-url = https://web.archive.org/web/20150215220456/http://www.militaryaerospace.com/articles/2013/06/gd-cots-submarine.html |archive-date=15 February 2015 |url-status=live}}</ref><ref>{{cite web |title=Progeny Systems to build and upgrade submarine combat system to control weapons on Navy fast-attack boats |url=https://www.militaryaerospace.com/computers/article/14201664/submarine-weapons-combat-system |website=Military+Aerospace Electronics |date=20 April 2021 |access-date=25 February 2024}}</ref>
* USS ''California'' was the first ''Virginia''-class submarine with the advanced electromagnetic signature reduction system built into it, but this system is being retrofitted into the other submarines of the class.<ref>{{cite web |url= http://www.gao.gov/new.items/d09326sp.pdf |title= GAO-09-326SP
|publisher=[[Government Accounting Office]] |date=March 2009 |access-date=26 April 2015 |archive-url= https://web.archive.org/web/20141206115911/http://www.gao.gov/new.items/d09326sp.pdf |archive-date=6 December 2014 |url-status=dead}}</ref>
* Integral 9-man [[Diving chamber|lock-out diving chamber]].<ref name= "aticourses">{{cite web |title=USS Virginia SSN-774-A New Steel Shark at Sea |url = http://www.aticourses.com/blog/index.php/2011/07/19/uss-virginia-ssn-774a-new-steel-shark-at-sea/ |url-status=dead |archive-url= https://web.archive.org/web/20150509163728/http://www.aticourses.com/blog/index.php/2011/07/19/uss-virginia-ssn-774a-new-steel-shark-at-sea |archive-date=9 May 2015 |access-date=26 April 2015 |publisher=Applied Technology Institute}}</ref>