Editing Los Angeles-class submarine (section)

===Control systems===
Over close to 40 years, the control suite of the class has changed dramatically. The class was originally equipped with the Mk 113 mod 10 fire control system, also known as the Pargo display program. The Mk 113 runs on a [[AN/UYK-7|UYK-7]] computer.<ref>{{cite book|title=U.S. Submarines Since 1945: An Illustrated Design History|page=118}}</ref><ref>{{cite web|url=http://vipclubmn.org/sysnavy.html|title=Systems, Navy Chapter|website=vipclubmn.org|url-status=live|archive-url=https://web.archive.org/web/20121002232805/http://vipclubmn.org/sysnavy.html|archive-date=2 October 2012}}</ref>

The Mk 117 FCS, the first "all [[Digital electronics|digital]]" [[fire control system]], replaced the Mk 113. The Mk 117 transferred the duties of the analog Mk 75 attack director to the UYK-7, and the digital Mk 81 weapon control consoles, removing the two analog conversions, and allowing "all digital" control of the digital Mk 48 control.<ref>{{cite book|last1=Friedman|first1=Norman|title=The Naval Institute Guide to World Naval Weapons Systems, 1997–1998|date=1997|publisher=Naval Institute Press|isbn=9781557502681|page=152}}</ref> The first 688 sub to be built with the Mk 117 was {{USS|Dallas|SSN-700|6}}.

The Mark 1 Combat Control System/All Digital Attack Center replaced the Mk 117 FCS, on which it was based. The Mk 1 CCS was built by [[Lockheed Martin]], and gave the class the ability to fire Tomahawk missiles.<ref>{{cite web |url=https://fas.org/man/dod-101/sys/ship/weaps/mk-1-css.htm |title=Mk 1 Combat Control System &#91;CCS&#93; |access-date=4 April 2015 |url-status=live |archive-url=https://web.archive.org/web/20150409020527/https://fas.org/man/dod-101/sys/ship/weaps/mk-1-css.htm |archive-date=9 April 2015 }}</ref> The CSS internal tracker model provides [[Electronic data processing|processing]] for both [[Towed array sonar|towed-array]] and spherical-array trackers. [[Sonar|Trackers]] are signal followers that generate bearing, arrival angle, and frequency reports based on information received by an acoustic sensor. It incorporated the Gyro Static Navigator into the system in replacement of the AN/WSN-1 DMINS (Dual Mini Ship's [[Inertial navigation system]])<ref name="fas-man-DMINS">{{cite web |title=Electronics Material Officer Course – Navigation Systems/Equipment  |url=https://man.fas.org/dod-101/navy/docs/swos/e1/MOD4LES4.html |website=man.fas.org |publisher=[[Federation of American Scientists]] |access-date=22 September 2024}}</ref> of the earlier 688 class.

The Mk 1 CCS was replaced by the Mk 2, which was built by [[Raytheon]]. Mk 2 provides Tomahawk Block III vertical launch capability as well as fleet-requested improvements to [[Mark 48 torpedo|Mk 48 ADCAP torpedo]] and Towed Array Target Motion Analysis operability. The Mk 2 CCS paired with the AN/BQQ-5E system is referred to as the QE-2" system. The CCS MK2 Block 1 A/B system architecture extends the CCS MK2 tactical system with a network of tactical advanced computers (TAC-3). These TAC-3s are configured to support the SFMPL, NTCS-A, LINK-11 and ATWCS subsystems.