View source for Los Angeles-class submarine

{{short description|Class of nuclear-powered fast attack submarines of the United States Navy}}
{{redirect|688 class|the Italian locomotive class|FS 688}}
{{Use dmy dates|date=November 2020}}
{{Use American English|date=December 2022}}
{{Infobox ship
|section1={{Infobox ship/image
 | image = SSN688.svg
 | image_caption = ''Los Angeles''-class SSN profile
 }}

|section2={{Infobox ship/image
 | image = File:USS Los Angeles;0868802.jpg
 | image_caption = {{USS|Los Angeles|SSN-688|6}}, lead boat of the class.
 }}

|section3={{Infobox ship/class overview
 | builders = * [[Newport News Shipbuilding]]
              * [[General Dynamics Electric Boat]]
 | operators = {{naval|United States}}
 | class_before = {{sclass|Sturgeon|submarine|4}}
 | class_after = {{sclass|Seawolf|submarine|4}}
 | cost = $900 million, 1990 dollars;<ref name=fas /> ${{format price|{{Inflation|US-GDP|900e6|1990}}}}, {{Inflation-year|US-GDP}} dollars{{Inflation-fn|US-GDP}}
 | subclasses = 
 | built_range = 1972–1996
 | in_commission_range = 1976–present
 | total_ships_building = 
 | total_ships_planned = 
 | total_ships_completed = 62
 | total_ships_cancelled = 
 | total_ships_active = 23
 | total_ships_laid up = 
 | total_ships_lost = 
 | total_ships_retired = 36
 | total_ships_preserved = 2 (as [[moored training ship]]s)
 | total_cost = 
 }}

|section4={{Infobox ship/characteristics
 | hide_header = 
 | header_caption = 
 | type = [[Nuclear attack submarine]]
 | displacement = * '''Surfaced:''' {{cvt|6082|t|LT|lk=on}}
                  * '''Submerged:''' {{cvt|6927|t|LT}}
 | length = {{convert|362|ft|m|abbr=on}}
 | beam = {{convert|33|ft|m|abbr=on}}
 | draught = 
 | draft = {{convert|31|ft|m|abbr=on}}
 | propulsion = * 1 × [[S6G reactor|S6G]] nuclear reactor (150–165 MW)
                * 2  ×  steam turbines (30,000–33,500) shp
                * 1 × shaft
                * 1 × secondary propulsion motor 325 hp (242 kW)
 | speed = * '''Surfaced: ''' {{convert|20|kn}}
           * '''Submerged:''' Over {{convert|25|kn}}, official;<ref>{{cite web
 |url=https://www.navy.mil/Resources/Fact-Files/Display-FactFiles/article/2169558/attack-submarines-ssn/
 |title=Attack Submarines – SSN
 |website=[[United States Navy]]
 |access-date=12 March 2023
 |quote=General Characteristics, Los Angeles class [...] Speed: 25+ knots (28+ miles per hour, 46.3 +kph)
 }}</ref> 33+ knots, reported<ref name="Polmar"/><ref>{{cite news
 |url=http://edition.cnn.com/2005/US/01/10/nuclear.submarine.update/
 |title=Officials: U.S. submarine hit undersea mountain
 |date=11 January 2005
 |work=CNN
 |access-date=20 April 2008
 |quote=The submarine was traveling in excess of 33 knots—about 35 mph—when its nose hit the undersea formation head-on, officials said.
 |url-status=live
 |archive-url=https://web.archive.org/web/20091018224757/http://edition.cnn.com/2005/US/01/10/nuclear.submarine.update/
 |archive-date=18 October 2009
 }}</ref>
 | range = Refueling required after 30 years<ref name=fas>[https://fas.org/man/dod-101/sys/ship/ssn-688.htm SSN-688 Los Angeles class] {{webarchive|url=https://web.archive.org/web/20140813131857/http://fas.org/man/dod-101/sys/ship/ssn-688.htm |date=13 August 2014 }} from [[Federation of American Scientists]] retrieved 29 February 2008 :''The 18 SSN-688 class submarines that will be refueled in their midlives could make good candidates for a service life extension because they could operate for nearly 30 years after the refueling. After these submarines serve for 30 years, they could undergo a two-year overhaul and serve for one more 10-year operating cycle, for a total service life of 42 years.''</ref>
 | endurance = 90 days
 | test_depth = {{convert|450|m|abbr=on}}<ref name="Polmar" />
 | complement = 129
 | sensors = BQQ-5 suite which includes active and passive systems [[sonar]], BQS-15 detecting and ranging sonar, WLR-8V(2) [[Electronic warfare support measures|ESM]] receiver, WLR-9 acoustic receiver for detection of active search sonar and acoustic homing torpedoes, BRD-7 radio direction finder,<ref name="proceedings">Polmar, Norman "The U. S. Navy Electronic Warfare (Part 1)" ''United States Naval Institute Proceedings'' October 1979 p. 137</ref> BPS-15 [[radar]]
 | EW = WLR-10 countermeasures set<ref name="proceedings"/>
 | armament = 4 × [[American 21 inch torpedo|21 in (533 mm)]] [[torpedo tube]]s, 37  ×   [[Mark 48 torpedo|Mk 48 torpedo]], [[Tomahawk (missile family)|Tomahawk land attack missile]], [[Boeing Harpoon|Harpoon anti-ship missile]], Mk 67 mobile, or [[Mark 60 CAPTOR|Mk 60 CAPTOR]] mines (FLTII and 688i FLTIII have a 12-tube VLS)
 | notes = 
 }}
}}

The '''''Los Angeles'' class''' of submarines are [[Nuclear marine propulsion|nuclear-powered]] [[fast attack submarine]]s ([[hull classification symbol|SSN]]) in service with the [[United States Navy]]. Also known as the '''688 class''' (pronounced "six-eighty-eight") after the hull number of lead vessel {{USS|Los Angeles|SSN-688}}, 62 were built from 1972 to 1996, the latter 23 to an improved '''688i''' standard. As of 2025, 23 of the ''Los Angeles'' class remain [[Ship commissioning|in commission]] and they account for almost half of the U.S. Navy's 50 fast attack submarines.<ref>{{Cite web |url=https://www.public.navy.mil/subfor/hq/Pages/Facts.aspx |title=Submarine Force Facts |access-date=29 July 2020 |archive-date=8 June 2020 |archive-url=https://web.archive.org/web/20200608042841/https://www.public.navy.mil/subfor/hq/Pages/Facts.aspx }}</ref>

Submarines of this class are named after American towns and cities, such as [[Albany, New York]]; [[Los Angeles]], California; and [[Tucson, Arizona]], with the exception of {{USS|Hyman G. Rickover|SSN-709|6}}, named for the "[[Hyman G. Rickover|father of the nuclear Navy]]." This was a change from traditionally [[United States ship naming conventions|naming]] attack submarines after marine animals, such as {{USS|Seawolf|SSN-575|6}} or {{USS|Shark|SSN-591|6}}. Rickover explained the decision to name the submarines after cities (and occasionally politicians influential in defense issues) by observing that "fish don't vote."<ref>{{Cite news |last1=Clarity |first1=James F. |last2=Weaver |first2=Warren Jr. |date=1985-04-22 |title=Briefing; Navy Reverts to Fish |language=en-US |work=The New York Times |url=https://www.nytimes.com/1985/04/22/us/briefing-navy-reverts-to-fish.html |access-date=2022-06-02 |issn=0362-4331}}</ref>

== Development ==
In the late 1960s, the Soviet Union's advances in submarine technology increasingly threatened the survivability of US Navy (USN) [[carrier battle group]]s. Soviet fast-attack submarines became capable of keeping pace with carrier groups, while their newer [[Cruise-missile submarine|missile submarines]] could potentially overwhelm the group's defenses with salvos of missiles.<ref name=":0">{{Cite journal |last1=Bierly |first1=Paul |last2=Gallagher |first2=Scott |last3=Spender |first3=J.C. |date=January 15, 2014 |title=Innovation decision-making in high-risk organizations: A comparison of the US and Soviet attack submarine programs |journal=Industrial and Corporate Change |volume=23 |issue=3 |pages=759–795|doi=10.1093/icc/dtt026 }}</ref> Development of the ''Los Angeles'' class commenced in 1967 as a response. The class originally had essentially the same weapons and sensors as the preceding {{sclass|Sturgeon|submarine|4}}, but was approximately 50% larger with "major improvements" in stealth and speed so that they too could keep up with carrier battle groups.<ref name=":0" />

On 1 December 1976 [[General Dynamics Electric Boat]] (GDEB) submitted a $544&nbsp;million claim related to its contract for 18 ''Los-Angeles''-class submarines; the contractor alleged the USN made an undue amount of design changes while the government argued that Electric Boat mismanaged its operations.<ref name=":1">{{Cite journal |last=Wasserman Goodman |first=Sherri |date=1988 |title=Legal Dilemmas in the Weapons Acquisition Process: The Procurement of the SSN-688 Attack Submarine |journal=Yale Law & Policy Review |volume=6 |issue=2 |pages=393–427 }}</ref> The USN and General Dynamics reached an $843&nbsp;million settlement agreement in June 1978;<ref name=":1" /> the contract price was increased by $125&nbsp;million, GDEB absorbed a $359&nbsp;million loss, and the USN paid an additional $359&nbsp;million under the authority of [[Public Law 85-804]].<ref>{{Cite web |last=General Accounting Office |date=May 18, 1984 |title=The 1978 Navy Shipbuilding Claim Settlement At Electric Boat – Status As Of July 2, 1983 |url=https://www.gao.gov/assets/nsiad-84-83.pdf |website=www.gao.gov}}</ref> The USN and General Dynamics had a further dispute in 1979–1980 when it was discovered that nonconforming steel had been used in the construction of the submarines and thousands of welds were found to be either defective or missing. This led General Dynamics to file a $100&nbsp;million insurance claim to cover the costs of re-inspections of the yard's work, "thus, Electric Boat was asking the Navy to reimburse it for its own mis-management." The parties reached an agreement in 1981 whereby GDEB was awarded a firm contract for an additional 688-class boat and two options; the Navy needed GDEB's shipbuilding capacity to achieve its procurement goals.<ref name=":1" />

''Los Angeles''-class submarines were built in three successive flights:<ref>{{cite web |date=February 14, 2000 |title=SSN-688 Los Angeles-class |url=https://fas.org/man/dod-101/sys/ship/ssn-688.htm |website=www.fas.org}}</ref>

{| class="wikitable"
|-
! Flight
! Pennant numbers
! Ordered dates
! Upgrades (where applicable)
|-
| I
| SSNs 688–718
| 1971–1977
| N/A
|-
| II
| SSNs 719–750
| 1977–1982
|12 vertical launch tubes for Tomahawk cruise missiles and an upgraded reactor core.
|-
| III
| SSNs 751–773
| 1982–1989
| "688i" (for Improved): Quieter, advanced BSY-1 sonar suite, the ability to lay mines and configured for under-ice operations.
|}

==Design==

===Flights===
[[File:SSN719.svg|thumb|left|280px|Flight II 688 VLS.]]
[[File:SSN772.svg|thumb|left|280px|Flight III 688I.]]
In 1982, after building 31 boats, the class underwent a minor redesign. The following eight that made up the second "flight" of subs had 12 new vertical launch tubes that could fire [[Tomahawk (missile family)|Tomahawk missile]]s. The last 23 had a significant upgrade with the '''688i''' improvement program. These boats are quieter, with more advanced electronics, sensors, and noise-reduction technology. The [[diving plane]]s are placed at the bow rather than on the [[Sail (submarine)|sail]], and are retractable.<ref>{{cite web |url=http://nationalinterest.org/commentary/the-five-best-submarines-all-time-9728 |title=The Five Best Submarines of All Time |first=Robert |last=Farley |work=[[The National Interest]] |date=18 October 2014 |url-status=live |archive-url=https://web.archive.org/web/20141020161239/http://nationalinterest.org/commentary/the-five-best-submarines-all-time-9728 |archive-date=20 October 2014 }}</ref> A further four boats were proposed by the Navy, but later cancelled.<ref>{{Cite book |last=Polmar |first=Norman |url=https://archive.org/details/navalinstitutegu0000polm_19ed/ |title=The Naval Institute Guide to Ships and Aircraft of the U.S. Fleet |publisher=Naval Institute Press |year=2013 |isbn=978-1-59114-687-2 |edition=19th |location=Annapolis, Maryland |page=82 |url-access=registration}}</ref>

===Capabilities===
[[File:LA sub1.jpg|thumb|Crewmen monitor consoles at the diving station aboard a ''Los Angeles''-class submarine]]
According to the [[U.S. Department of Defense]], the top speed of the submarines of the ''Los Angeles'' class is over {{convert|25|kn|lk=in}}, although the actual maximum is classified. Some published estimates have placed their top speed at {{convert|30|to|33|kn}}.<ref name="Polmar">{{cite book |last1=Polmar |first1=Norman |last2=Moore |first2=Kenneth J. |title=Cold War Submarines: The Design and Construction of U.S. and Soviet Submarines |page=271 |publisher=Brassey's |year=2003 |isbn=1-57488-594-4}}</ref><ref>{{cite book|last=Tyler |first=Patrick |author-link=Patrick Tyler |title=Running Critical |publisher=Harper and Row |year=1986 |location=New York |pages=24, 56, 66–67 |isbn=978-0-06-091441-7}}</ref> In his book ''Submarine: A Guided Tour Inside a Nuclear Warship'', [[Tom Clancy]] estimated the top speed of ''Los Angeles''-class submarines at about {{convert|37|kn}}.

The U.S. Navy gives the maximum operating depth of the ''Los Angeles'' class as {{convert|650|ft|m|abbr=on}},<ref>{{cite book |last=Waddle |first=Scott |author-link=Scott Waddle |title=The Right Thing |publisher=Integrity Publishers |year=2003 |isbn=1-59145-036-5 |pages=xi (map/diagram) |quote=This reference is for operating depth only |url=https://archive.org/details/rightthing00wadd }}</ref> while [[Patrick Tyler]], in his book ''Running Critical'', suggests a maximum operating depth of {{convert|950|ft|m|abbr=on}}.<ref>Tyler, (1986). pp. 66–67, 156</ref> Although Tyler cites the 688-class design committee for this figure,<ref>"Notes in pp. 64–67: Deliberations of ad-hoc committee on SSN 688 design taken from confidential sources and from interviews with Admiral [Ret] Rickover. ..." From Tyler, p. 365</ref> the government has not commented on it. The maximum diving depth is {{convert|1475|ft|m|abbr=on}} according to ''[[Jane's Fighting Ships]], 2004–2005 Edition'', edited by Commodore Stephen Saunders of the Royal Navy.<ref>Saunders, (2004). pp. 838</ref>

===Weapons===
[[File:USS Santa Fe (SSN-763) VLS doors open.jpg|thumb|A portside bow view of the fore section of {{USS|Santa Fe|SSN-763|6}} tied up at the pier in February 1994: The doors of the Mark 36 vertical launch system for the Tomahawk missiles are in the "open" position.]]
''Los Angeles''-class submarines carry 24 [[torpedo tube]]-launched weapons, as well as Mark 67 and [[Mark 60 CAPTOR]] [[Naval mine|mines]] and were designed to launch [[Tomahawk (missile family)|Tomahawk]] [[cruise missile]]s, and [[Harpoon (missile)|Harpoon missiles]] horizontally (from the torpedo tubes). The last 31 boats of this class (Flight II and Flight III/688i) also have 12 dedicated [[vertical launching system]] tubes for launching Tomahawks. The tube configuration for the first two boats of Flight II differed from the later ones: ''Providence'' and ''Pittsburgh'' have four rows of three tubes vs. the inner two rows of four and outer two rows of two tubes found on other examples. The 688i ("improved") model submarines are capable of deploying the Mk 67 [[Submarine Launched Mobile Mines]].<ref name="Winnefeld 2023">Winnefeld, James A. "[https://www.usni.org/magazines/proceedings/2023/december/mine-warfare-could-be-key|Mine Warfare Could Be Key]." ''Proceedings of the U.S. Naval Institute'', December 2023.</ref>

===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=978-1-55750-268-1|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.

===Sensors===
====Sonar====
=====AN/BQQ-5=====
AN/BQQ-5 sensor suite consists of the AN/BQS-13 spherical sonar array and AN/UYK-44 computer. The AN/BQQ-5 was developed from the AN/BQQ-2 sonar system. The BQS 11, 12, and 13 spherical arrays have 1,241 transducers. Also equipped are a conformal hull array with 104 to 156 hydrophones and two towed arrays: the TB-12 (later replaced by the TB-16) and TB-23 or TB-29, of which there are multiple variants. There are five versions of the AN/BQQ-5 system, sequentially identified by letters A–E.

The 688i (Improved) subclass was initially equipped with the AN/BSY-1 SUBACS submarine advanced combat system that used an AN/BQQ-5E sensor system with updated computers and interface equipment. Development of the AN/BSY-1 and its sister the AN/BSY-2 for the {{sclass|Seawolf|submarine|4}} was widely reported as one of the most problematic programs for the Navy, its cost and schedule suffering many setbacks.

A series of conformal passive hydrophones are hard-mounted to each side of the hull, using the AN/BQR-24 internal processor. The system uses FLIT (frequency line integration tracking) which homes in on precise narrowband frequencies of sound and, using the Doppler principle, can accurately provide firing solutions against very quiet submarines. The AN/BQQ-5's hull array doubled the performance of its predecessors.

=====AN/BQQ-10=====
The AN/BQQ-5 system was replaced by the AN/BQQ-10 system. Acoustic Rapid Commercial Off-The-Shelf Insertion (A-RCI), designated AN/BQQ-10, is a four-phase program for transforming existing submarine sonar systems (AN/BSY-1, AN/BQQ-5, and AN/BQQ-6) from legacy systems to a more capable and flexible COTS/Open System Architecture (OSA) and also provide the submarine force with a common sonar system. A single A-RCI Multi-Purpose Processor (MPP) has as much computing power as the entire ''Los Angeles'' (SSN-688/688I) submarine fleet combined and will allow the development and use of complex algorithms previously beyond the reach of legacy processors. The use of COTS/OSA technologies and systems will enable rapid periodic updates to both software and hardware. COTS-based processors will allow computer power growth at a rate commensurate with the commercial industry.<ref>{{cite web |url=https://fas.org/man/dod-101/sys/ship/weaps/an-bqq-10.htm |title=BQQ-10 A-RCI Acoustic Rapid COTS Insertion |access-date=4 April 2015 |url-status=live |archive-url=https://web.archive.org/web/20150409015938/https://fas.org/man/dod-101/sys/ship/weaps/an-bqq-10.htm |archive-date=9 April 2015 }}</ref>

===Engineering and auxiliary systems===
[[File:Ssn 759 deck.jpg|thumb|The aft end of the control room for {{USS|Jefferson City|SSN-759|6}} in June 2009]]
Two watertight compartments are used in the ''Los Angeles''-class submarines. The forward compartment contains crew living spaces, weapons-handling spaces, and control spaces not critical to recovering propulsion. The aft compartment contains the bulk of the submarine's engineering systems, power generation turbines, and water-making equipment.<ref>SSN-688 ''Los Angeles'' Class Design. [http://www.globalsecurity.org/military/systems/ship/ssn-688-design.htm Los Angeles Class] {{webarchive|url=https://web.archive.org/web/20080415203456/http://www.globalsecurity.org/military/systems/ship/ssn-688-design.htm |date=15 April 2008 }} at Globalsecurity.org.  Accessed on 7 January 2009</ref> Some submarines in the class are capable of delivering [[Navy SEAL]]s through either a [[SEAL Delivery Vehicle]] deployed from the [[Dry Deck Shelter]] or the [[Advanced SEAL Delivery System]] mounted on the dorsal side, although the latter was cancelled in 2006 and removed from service in 2009.<ref>Polmar & Moore, (2003).  pp. 263</ref> A variety of atmospheric control devices are used to allow the vessel to remain submerged for long periods of time without ventilating, including an [[Electrolytic cell|electrolytic]] [[oxygen generator]], which produces oxygen for the crew and hydrogen as a byproduct. The hydrogen is pumped overboard but there is always a risk of fire or explosion from this process.<ref name=fas /><ref>Treadwell Supplies Oxygen Generator Components for Nuclear Subs [http://www.defenseindustrydaily.com/treadwell-supplies-oxygen-generator-components-for-nuclear-subs-2-04690/ Defense Industry Daily] {{webarchive|url=https://web.archive.org/web/20101216024150/http://www.defenseindustrydaily.com/treadwell-supplies-oxygen-generator-components-for-nuclear-subs-2-04690/ |date=16 December 2010 }} 28-January-2008</ref>

[[File:USS Greeneville (SSN-772).jpg|thumb|{{USS|Greeneville|SSN-772|6}} with an attached [[Advanced SEAL Delivery System|ASDS]]]]
While on the surface or at snorkel depth, the submarine may use the submarine's auxiliary or emergency [[Diesel-electric transmission|diesel generator]] for power or ventilation<ref>Fairbanks Morse Engines [http://www.fairbanksmorse.com/installations_marine.php Marine Installations] {{webarchive|url=https://web.archive.org/web/20080926105037/http://www.fairbanksmorse.com/installations_marine.php |date=26 September 2008 }} Accessed on 29 April 2008</ref><ref>Auxiliary Division on USS Cheyenne [https://fas.org/man/dod-101/navy/unit/dept-ssn-773.htm#ENGINEERING%20DEPARTMENT USS ''Cheyenne''  SSN-773 Department & Divisions] {{webarchive|url=https://web.archive.org/web/20150409020439/https://fas.org/man/dod-101/navy/unit/dept-ssn-773.htm |date=9 April 2015 }} from [[Federation of American Scientists]]. Accessed on 29 April 2008</ref> (e.g., following a fire).<ref>Firefighting and Damage Control Update [http://www.dcfp.navy.mil/library/dcra/181044ZJUN98.htm 181044Z JUN 98 (SUBS) Message] {{webarchive|url=https://web.archive.org/web/20090114121731/http://www.dcfp.navy.mil/library/dcra/181044ZJUN98.htm |date=14 January 2009 }} [[COMSUBLANT]] (1998) Accessed on 29 April 2008</ref> The diesel engine in a 688 class can be quickly started by compressed air during emergencies or to evacuate noxious (non[[Volatile (astrogeology)|volatile]]) gases from the boat, although 'ventilation' requires raising a snorkel mast. During nonemergency situations, design constraints call for operators to allow the engine to reach normal operating temperatures before it is capable of producing full power, a process that may take from 20 to 30 minutes. However, the diesel generator can be immediately loaded to 100% power output, despite design criteria cautions, at the discretion of the submarine commander on the recommendation of the submarine's engineer, if necessity dictates such actions to: (a) restore electrical power to the submarine, (b) prevent a reactor incident from occurring or escalating, or (c) to protect the lives of the crew or others as determined necessary by the commanding officer.<ref>{{cite book|last1=DiMercurio |first1=Michael |last2=Benson |first2=Michael |title=The Complete Idiot's Guide to Submarines |place=New York |publisher=Alpha Books |year=2003 |pages=49–52 |isbn=978-0-02-864471-4}}</ref>

[[File:Periscope Depth.jpg|thumb|{{USS|Key West|SSN-722|6}} submerged at [[periscope depth]] off the coast of [[Honolulu]], [[Hawaii]] in July 2004]]

===Propulsion===
The ''Los Angeles'' class is powered by the General Electric [[S6G reactor|S6G]] [[pressurized water reactor]]. The hot reactor coolant water heats water in the steam generators, producing steam to power the propulsion turbines and ship service turbine generators (SSTGs), which generate the submarine's electrical power. The high-speed propulsion turbines drive the shaft and propeller through a reduction gear. In the case of a reactor plant casualty, the submarine has a diesel generator and a bank of batteries to provide electrical power. An emergency propulsion motor on the shaft line or a retractable 325-hp secondary propulsion motor power the submarine off the battery or diesel generator.

The S6G reactor plant was originally designed to use the D1G-2 core, similar to the D2G reactor used on the [[guided missile cruiser]] {{USS|Bainbridge|CGN-25|6}}. The D1G-2 core had a rated thermal power of 150 MW and the turbines were rated at 30,000 shp. All ''Los Angeles''-class submarines from {{USS|Providence|SSN-719|6}} on were built with a D2W core and older submarines with D1G-2 cores have been refueled with D2W cores. The D2W core is rated at 165 MW and turbine power rose to approximately 33,500 shp.<ref>[https://www.globalsecurity.org/military/systems/ship/systems/s6g.htm S6G] Accessed on 9 April 2020</ref>

== Boats in class ==
{| class="wikitable floatright"
|-
!Summary of Status !! Count
|-
|Active, in commission|| align="right" style="background:#3f3;"|20
|-
|Active (Reserve), Awaiting Decommissioning|| align="right" style="background:#CEC8EF"|2
|-
|Converted to [[moored training ship]]|| align="right" style="background:#ffff00"|2
|-
|Inactive or decommissioned & stricken|| align="right" style="background:#fdbb30"|26
|-
|Disposed of by [[Ship-Submarine Recycling Program|submarine recycling]]|| align="right" style="background:#f66"|11
|-
|'''Total'''|| align="right"|'''62'''
|-
|}

The class has a total of 62 boats divided into three flights as follows:
*31 × Flight I
*8 × Flight II with VLS
*23 × Flight III 688i (Improved)

=== Submarines ===

{| class="wikitable sortable" style=text-align:center;
|- bgcolor="#efefef"
! Name
! Hull number
! Flight
! Builder
! Ordered
! Laid down
! Launched
! Commissioned
! Decommissioned
! Service life
! Status
! Homeport/<br />NVR page
|-
|[[USS Los Angeles (SSN-688)|''Los Angeles'']] 
|SSN-688
|rowspan=31|'''I'''
|rowspan=2|[[Newport News Shipbuilding]], [[Newport News, Virginia|Newport News]]
|rowspan=3|8 January 1971
|8 January 1972
|6 April 1974
|13 November 1976
|4 February 2011
|{{Age in years, months and days|1976|11|13|2011|02|04}}
|style="background:#f66" |Disposed of by submarine recycling
|N/A<ref>{{Naval Vessel Register URL|id=SSN688|title=SSN688}}</ref>
|-
|[[USS Baton Rouge|''Baton Rouge'']]
|SSN-689
|18 November 1972
|26 April 1975
|25 June 1977
|13 January 1995
|{{Age in years, months and days|1977|06|25|1995|01|13}}
|style="background:#f66" |Disposed of by submarine recycling
|N/A<ref>{{Naval Vessel Register URL|id=SSN689|title=SSN689}}</ref>
|-
||[[USS Philadelphia (SSN-690)|''Philadelphia'']] 
|SSN-690
|[[General Dynamics Electric Boat]], [[Groton, Connecticut|Groton]]
|12 August 1972
|19 October 1974
|25 June 1977
|25 June 2010
|{{Age in years, months and days|1977|06|25|2010|06|25}}, 0 months and 0 days
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN690|title=SSN690}}</ref>
|-
||[[USS Memphis (SSN-691)|''Memphis'']]
|SSN-691
|[[Newport News Shipbuilding]], [[Newport News, Virginia|Newport News]]
|4 February 1971
|23 June 1973
|3 April 1976
|17 December 1977
|1 April 2011
|{{Age in years, months and days|1977|12|17|2011|04|1}}
|style="background:#FDBB30" |Stricken, final disposition pending<ref>
{{cite news|url=http://www.globalsecurity.org/military/library/news/2011/02/mil-110211-nns02.htm|title=USS Memphis to Decommission|work=Navy News Service|publisher=GlobalSecurity.org|access-date=2012-10-24}}</ref>
|N/A<ref>{{Naval Vessel Register URL|id=SSN691|title=SSN691}}</ref>
|-
||[[USS Omaha (SSN-692)|''Omaha'']]
|SSN-692
|[[General Dynamics Electric Boat]], [[Groton, Connecticut|Groton]]
|31 January 1971
|27 January 1973
|21 February 1976
|11 March 1978
|5 October 1995
|{{Age in years, months and days|1978|03|11|1995|10|05}}
|style="background:#f66" |Disposed of by submarine recycling<ref>
{{cite news|url=http://www.usni.org/sites/default/files/Morison%20May%2011.pdf|title=U.S. Naval Battle Force Changes |publisher=U.S. Naval Institute, Annapolis, Maryland|access-date=2011-05-20}}</ref>
|N/A<ref>{{Naval Vessel Register URL|id=SSN692|title=SSN692}}</ref>
|-
||[[USS Cincinnati (SSN-693)|''Cincinnati'']]
|SSN-693
|[[Newport News Shipbuilding]], [[Newport News, Virginia|Newport News]]
|4 February 1971
|6 April 1974
|19 February 1977
|11 March 1978
|29 July 1996
|{{Age in years, months and days|1978|03|11|1996|07|29}}
|style="background:#f66" |Disposed of by submarine recycling<ref>
{{cite news|url=http://www.usni.org/sites/default/files/Morison%20May%2011.pdf|title=U.S. Naval Battle Force Changes |publisher=U.S. Naval Institute, Annapolis, Maryland|access-date=2011-05-20}}</ref>
|N/A<ref>{{Naval Vessel Register URL|id=SSN693|title=SSN693}}</ref>
|-
||[[USS Groton (SSN-694)|''Groton'']]
|SSN-694
|[[General Dynamics Electric Boat]], [[Groton, Connecticut|Groton]]
|31 January 1971
|3 August 1973
|9 October 1976
|8 July 1978
|7 November 1997
|{{Age in years, months and days|1978|07|08|1997|11|07}}
|style="background:#f66" |Disposed of by submarine recycling<ref>
{{cite news|url=http://www.usni.org/sites/default/files/Morison%20May%2011.pdf|title=U.S. Naval Battle Force Changes |publisher=U.S. Naval Institute, Annapolis, Maryland|access-date=2011-05-20}}</ref>
|N/A<ref>{{Naval Vessel Register URL|id=SSN694|title=SSN694}}</ref>
|-
||[[USS Birmingham (SSN-695)|''Birmingham'']]
|SSN-695
|[[Newport News Shipbuilding]], [[Newport News, Virginia|Newport News]]
|rowspan=5|24 January 1972
|26 April 1975
|29 October 1977
|16 December 1978
|22 December 1997
|{{Age in years, months and days|1978|12|16|1997|12|22}}<br />(0 months)
|style="background:#f66" |Disposed of by submarine recycling
|N/A<ref>{{Naval Vessel Register URL|id=SSN695|title=SSN695}}</ref>
|-
||[[USS New York City|''New York City'']]
|SSN-696
|rowspan=15|[[General Dynamics Electric Boat]], [[Groton, Connecticut|Groton]]
|15 December 1973
|18 June 1977
|3 March 1979
|30 April 1997
|{{Age in years, months and days|1979|03|03|1997|04|30}}
|style="background:#FDBB30" |Stricken, to be disposed of by submarine recycling
|N/A<ref>{{Naval Vessel Register URL|id=SSN696|title=SSN696}}</ref>
|-
||[[USS Indianapolis (SSN-697)|''Indianapolis'']]
|SSN-697
|19 October 1974
|30 July 1977
|5 January 1980
|22 December 1998
|{{Age in years, months and days|1980|01|05|1998|12|22}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN697|title=SSN697}}</ref>
|-
||[[USS Bremerton (SSN-698)|''Bremerton'']]
|SSN-698
|8 May 1976
|22 July 1978
|28 March 1981
|21 May 2021
|{{Age in years, months and days|1981|03|28|2021|05|21}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN698|title=SSN698}}</ref>
|-
||[[USS Jacksonville|''Jacksonville'']]
|SSN-699
|21 February 1976
|18 November 1978
|16 May 1981
|16 November 2021<ref name="dvids1">{{cite web|url=https://www.dvidshub.net/news/409640/uss-jacksonville-ssn-699-decommissioned|title=USS Jacksonville (SSN-699) Decommissioned|publisher=dvidshub.net|date=16 November 2021|access-date=23 November 2021}}</ref>
|{{Age in years, months and days|1981|05|16|2021|11|16}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN699|title=SSN699}}</ref>
|-
||[[USS Dallas (SSN-700)|''Dallas'']]
|SSN-700
|31 January 1973
|9 October 1976
|28 April 1979
|18 July 1981
|4 April 2018
|{{Age in years, months and days|1981|07|18|2018|04|04}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN700|title=SSN700}}</ref>
|-
||[[USS La Jolla|''La Jolla'']]
|SSN-701/<br />MTS-701
|10 December 1973
|16 October 1976
|11 August 1979
|24 October 1981
|15 November 2019
|{{Age in years, months and days|1981|10|24|2019|11|15}}
|style="background:#ffff00" |Converted to a [[moored training ship]] for the [[Nuclear Power School]] as of 2020
|[[Naval Support Activity Charleston|Charleston, SC]]<ref>{{Naval Vessel Register URL|id=SSN701|title=SSN701}}</ref>
|-
|[[USS Phoenix (SSN-702)|''Phoenix'']]
|SSN-702
|31 October 1973
|30 July 1977
|8 December 1979
|19 December 1981
|29 July 1998
|{{Age in years, months and days|1981|12|19|1998|07|29}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN702|title=SSN702}}</ref>
|-
|[[USS Boston (SSN-703)|''Boston'']]
|SSN-703
|10 December 1973
|11 August 1978
|19 April 1980
|30 January 1982
|19 November 1999
|{{Age in years, months and days|1982|01|30|1999|11|19}}
|style="background:#f66" |Disposed of by submarine recycling
|N/A<ref>{{Naval Vessel Register URL|id=SSN703|title=SSN703}}</ref>
|-
|[[USS Baltimore (SSN-704)|''Baltimore'']]
|SSN-704
|rowspan=3|31 October 1973
|21 May 1979
|13 December 1980
|24 July 1982
|10 July 1998
|{{Age in years, months and days|1982|07|24|1998|07|10}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN704|title=SSN704}}</ref>
|-
|[[USS City of Corpus Christi|''City of Corpus Christi'']]
|SSN-705
|4 September 1979
|25 April 1981
|8 January 1983
|3 August 2017
|{{Age in years, months and days|1983|01|08|2017|08|03}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN705|title=SSN705}}</ref>
|-
||[[USS Albuquerque (SSN-706)|''Albuquerque'']]
|SSN-706
|27 December 1979
|13 March 1982
|21 May 1983
|27 February 2017
|{{Age in years, months and days|1983|05|21|2017|02|27}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN706|title=SSN706}}</ref>
|-
|[[USS Portsmouth (SSN-707)|''Portsmouth'']]
|SSN-707
|10 December 1973
|8 May 1980
|18 September 1982
|1 October 1983
|10 September 2004
|{{Age in years, months and days|1983|10|01|2004|09|10}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN707|title=SSN707}}</ref>
|-
|[[USS Minneapolis-Saint Paul (SSN-708)|''Minneapolis-Saint Paul'']]
|SSN-708
|31 October 1973
|20 January 1981
|19 March 1983
|10 March 1984
|28 August 2008
|{{Age in years, months and days|1984|03|10|2008|08|28}}
|style="background:#f66" |Disposed of by submarine recycling
|N/A<ref>{{Naval Vessel Register URL|id=SSN708|title=SSN708}}</ref>
|-
|[[USS Hyman G. Rickover (SSN-709)|''Hyman G. Rickover'']]<br />(ex-''Providence'')
|SSN-709
|rowspan=2|10 December 1973
|24 July 1981
|27 August 1983
|21 July 1984
|14 December 2006
|{{Age in years, months and days|1984|07|21|2006|12|14}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN709|title=SSN709}}</ref>
|-
|[[USS Augusta (SSN-710)|''Augusta'']]
|SSN-710
|1 April 1983
|21 January 1984
|19 January 1985
|11 February 2009
|{{Age in years, months and days|1985|01|19|2009|02|11}}<br />(0 months) 
|style="background:#f66" |Disposed of by submarine recycling
|N/A<ref>{{Naval Vessel Register URL|id=SSN710|title=SSN710}}</ref>
|-
|[[USS San Francisco (SSN-711)|''San Francisco'']]
|SSN-711/<br />MTS-711
|rowspan=8|[[Newport News Shipbuilding]], [[Newport News, Virginia|Newport News]]
|rowspan=3|1 August 1975
|26 May 1977
|27 October 1979
|24 April 1981
|5 May 2022
|{{Age in years, months and days|1981|04|24|2022|05|15}}
|style="background:#FFFF00"|Converted to a [[moored training ship]] for the [[Nuclear Power School]] as of 2021
|[[Naval Support Activity Charleston|Charleston, SC]]<ref>{{Naval Vessel Register URL|id=SSN711|title=SSN711}}</ref>
|-
|[[USS Atlanta (SSN-712)|''Atlanta'']] 
|SSN-712
|17 August 1978
|16 August 1980
|6 March 1982
|16 December 1999
|{{Age in years, months and days|1982|03|06|1999|12|16}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN712|title=SSN712}}</ref>
|-
|[[USS Houston (SSN-713)|''Houston'']]
|SSN-713
|29 January 1979
|21 March 1981
|25 September 1982
|26 August 2016
|{{Age in years, months and days|1982|09|25|2016|08|26}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN713|title=SSN713}}</ref>
|-
|[[USS Norfolk (SSN-714)|''Norfolk'']] 
|SSN-714
|20 February 1976
|1 August 1979
|31 October 1981
|21 May 1983
|11 December 2014
|{{Age in years, months and days|1983|05|21|2014|12|11}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN714|title=SSN714}}</ref>
|-
|[[USS Buffalo (SSN-715)|''Buffalo'']]
||SSN-715
|23 February 1976
|25 January 1980
|8 May 1982
|5 November 1983
|30 January 2019
|{{Age in years, months and days|1983|11|05|2019|01|30}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN715|title=SSN715}}</ref>
|-
|[[USS Salt Lake City (SSN-716)|''Salt Lake City'']] 
||SSN-716
|rowspan=3|15 September 1977
|26 August 1980
|16 October 1982
|12 May 1984
|15 January 2006
|{{Age in years, months and days|1984|05|12|2006|01|15}}
|style="background:#f66" |Disposed of by submarine recycling
|N/A<ref>{{Naval Vessel Register URL|id=SSN716|title=SSN716}}</ref>
|-
|[[USS Olympia (SSN-717)|''Olympia'']] 
||SSN-717
|31 March 1981
|30 April 1983
|17 November 1984
|5 February 2021
|{{Age in years, months and days|1984|11|17|2021|02|05}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN717|title=SSN717}}</ref>
|-
|[[USS Honolulu (SSN-718)|''Honolulu'']] 
||SSN-718
|10 November 1981
|24 September 1983
|6 July 1985
|2 November 2007
|{{Age in years, months and days|1985|06|06|2007|11|02}}
|style="background:#f66" |Disposed of by submarine recycling
|N/A<ref>{{Naval Vessel Register URL|id=SSN718|title=SSN718}}</ref>
|-
|[[USS Providence (SSN-719)|''Providence'']] 
|SSN-719
|rowspan=8|'''II with [[vertical launching system|VLS]]'''
|rowspan=2|[[General Dynamics Electric Boat]], [[Groton, Connecticut|Groton]]
|rowspan=2|16 April 1979
|14 October 1982
|4 August 1984
|27 July 1985
|22 August 2022
|{{Age in years, months and days|1985|07|27|2022|08|22}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN719|title=SSN719}}</ref>
|-
|[[USS Pittsburgh (SSN-720)|''Pittsburgh'']] 
|SSN-720
|15 April 1983
|8 December 1984
|23 November 1985
|15 April 2020
|{{Age in years, months and days|1985|11|23|2020|04|15}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN720|title=SSN720}}</ref>
|-
|[[USS Chicago (SSN-721)|''Chicago'']]
|SSN-721
|rowspan=3|[[Newport News Shipbuilding]], [[Newport News, Virginia|Newport News]]
|rowspan=3|13 August 1981
|5 January 1983
|13 October 1984
|27 September 1986
|21 July 2023
|{{Age in years, months and days|1986|9|27|2023|7|21}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN721|title=SSN721}}</ref>
|-
|[[USS Key West (SSN-722)|''Key West'']]
|SSN-722
|6 July 1983
|20 July 1985
|12 September 1987
|12 September 2025<ref name= "spm1">{{cite magazine|first=Richard R.|last=Burgess|url=https://seapowermagazine.org/navy-plans-to-retire-48-ships-during-2022-2026|title=Narvy Plans to Retire 48 Ships During 2022-2026|magazine=Seapower|date=11 December 2020}}</ref>
|{{Age in years, months and days|1987|09|12|2025|09|12}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN722|title=SSN722}}</ref>
|-
|[[USS Oklahoma City (SSN-723)|''Oklahoma City'']] 
|SSN-723
|4 January 1984
|2 November 1985
|9 July 1988
|9 September 2022
||{{Age in years, months and days|1988|07|09|2022|09|09}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN723|title=SSN723}}</ref>
|-
|[[USS Louisville (SSN-724)|''Louisville'']]
|SSN-724
|rowspan=2|[[General Dynamics Electric Boat]], [[Groton, Connecticut|Groton]]
|11 February 1982
|24 September 1984
|14 December 1985
|8 November 1986
|9 March 2021
|{{Age in years, months and days|1986|11|08|2021|03|09}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN724|title=SSN724}}</ref>
|-
|[[USS Helena (SSN-725)|''Helena'']]
|SSN-725
|rowspan=2|19 April 1982
|28 March 1985
|28 June 1986
|11 July 1987
|25 July 2025
|{{Age in years, months and days|1987|07|11|2025|07|25}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN725|title=SSN725}}</ref>
|-
|[[USS Newport News (SSN-750)|''Newport News'']]
|SSN-750
|[[Newport News Shipbuilding]], [[Newport News, Virginia|Newport News]]
|3 March 1984
|15 March 1986
|3 June 1989
|<!----{{Age in years, months and days|yyyy|mm|dd|yyyy2|mm2|dd2}}-- add after decommissioning---->Proposed 2026<ref name="decomm1">{{cite web|url=https://media.defense.gov/2022/Apr/20/2002980535/-1/-1/0/PB23%20SHIPBUILDING%20PLAN%2018%20APR%202022%20FINAL.PDF|title=Report to Congress on the Annual Long-Range Plan for Construction of Naval Vessels|publisher=media.defense.gov|date=20 April 2022|access-date=7 October 2022}}</ref>
|<!----{{Age in years, months and days|yyyy|mm|dd|yyyy2|mm2|dd2}}-- add after decommissioning---->
|style="background:#3f3;" |Active, in commission|||[[Naval Submarine Base New London|Groton, CT]]<ref>{{Naval Vessel Register URL|id=SSN750|title=SSN750}}</ref>
|-
|[[USS San Juan (SSN-751)|''San Juan'']] 
|SSN-751
|rowspan=23|'''III 688i (Improved)'''
|rowspan=2|[[General Dynamics Electric Boat]], [[Groton, Connecticut|Groton]]
|rowspan=2|30 November 1982
|9 August 1985
|6 December 1986
|6 August 1988
|<!----{{Age in years, months and days|yyyy|mm|dd|yyyy2|mm2|dd2}}-- add after decommissioning---->Proposed 2024<ref name="decomm1" />
|rowspan=4|<!----{{Age in years, months and days|yyyy|mm|dd|yyyy2|mm2|dd2}}--add after decommissioning---->
|style="background:#cec8ef;"|Active (Reserve), Awaiting Decommissioning
|[[Naval Submarine Base New London|Groton, CT]]<ref>{{Naval Vessel Register URL|id=SSN751|title=SSN751}}</ref>
|-
|[[USS Pasadena (SSN-752)|''Pasadena'']] 
|SSN-752
|20 December 1985
|12 September 1987
|11 February 1989
|
|style="background:#3f3;"|Active, in commission
|[[Naval Station Norfolk|Norfolk, VA]]<ref>{{Naval Vessel Register URL|id=SSN752|title=SSN752}}</ref>
|-
|[[USS Albany (SSN-753)|''Albany'']]
|SSN-753
|[[Newport News Shipbuilding]], [[Newport News, Virginia|Newport News]]
|29 November 1983
|22 April 1985
|13 June 1987
|7 April 1990
|
|style="background:#3f3;"|Active, in commission
|[[Naval Station Norfolk|Norfolk, VA]]<ref>{{Naval Vessel Register URL|id=SSN753|title=SSN753}}</ref>
|-
|[[USS Topeka (SSN-754)|''Topeka'']] 
|SSN-754
|rowspan=2|[[General Dynamics Electric Boat]], [[Groton, Connecticut|Groton]]
|rowspan=2|28 November 1983
|13 May 1986
|23 January 1988
|21 October 1989
|Proposed 2024<ref name="decomm1" />
|style="background:#cec8ef;"|Active (Reserve), Awaiting Decommissioning
|[[Joint Base Pearl Harbor–Hickam|Pearl Harbor, HI]]<ref>{{Naval Vessel Register URL|id=SSN754|title=SSN754}}</ref>
|-
|[[USS Miami (SSN-755)|''Miami'']] 
|SSN-755
|24 October 1986
|12 November 1988
|30 June 1990
|28 March 2014
|{{Age in years, months and days|1990|06|30|2014|03|28}}
|style="background:#FDBB30" |Stricken, final disposition pending
|N/A<ref>{{Naval Vessel Register URL|id=SSN755|title=SSN755}}</ref>
|-
|[[USS Scranton (SSN-756)|''Scranton'']]
|SSN-756
|[[Newport News Shipbuilding]], [[Newport News, Virginia|Newport News]]
|rowspan=4|26 November 1984
|29 August 1986
|3 July 1989
|26 January 1991
|Proposed 2026<ref name="decomm1" />
|rowspan=18|<!----{{Age in years, months and days|yyyy|mm|dd|yyyy2|mm2|dd2}}--add after decommissioning---->
|style="background:#3f3;"|Active, in commission
|[[Naval Base Point Loma|San Diego, CA]]<ref>{{Naval Vessel Register URL|id=SSN756|title=SSN756}}</ref>
|-
|[[USS Alexandria (SSN-757)|''Alexandria'']] 
|SSN-757
|[[General Dynamics Electric Boat]], [[Groton, Connecticut|Groton]]
|19 June 1987
|23 June 1990
|29 June 1991
|Proposed 2026<ref name="decomm1" />
|style="background:#3f3;"|Active, in commission
|[[Naval Base Point Loma|San Diego, CA]]<ref>{{Naval Vessel Register URL|id=SSN757|title=SSN757}}</ref>
|-
|[[USS Asheville (SSN-758)|''Asheville'']]
|SSN-758
|rowspan=2|[[Newport News Shipbuilding]], [[Newport News, Virginia|Newport News]]
|9 January 1987
|24 February 1990
|28 September 1991
|
|style="background:#3f3;"|Active, in commission
|[[Naval Base Guam|Apra Harbor, GU]]<ref>{{Naval Vessel Register URL|id=SSN758|title=SSN758}}</ref>
|-
|[[USS Jefferson City|''Jefferson City'']]
|SSN-759 
|21 September 1987
|17 August 1990
|29 February 1992
|
|style="background:#3f3;"|Active, in commission
|[[Naval Base Guam|Apra Harbor, GU]]<ref>{{Naval Vessel Register URL|id=SSN759|title=SSN759}}</ref>
|-
|[[USS Annapolis (SSN-760)|''Annapolis'']]
|SSN-760
|rowspan=4|[[General Dynamics Electric Boat]], [[Groton, Connecticut|Groton]]
|rowspan=4|21 March 1986
|15 June 1988
|18 May 1991
|11 April 1992
|Proposed 2027<ref name="decomm1" />
|style="background:#3f3;"|Active, in commission
|[[Naval Base Guam|Apra Harbor, GU]]<ref>{{Naval Vessel Register URL|id=SSN760|title=SSN760}}</ref>
|-
|[[USS Springfield (SSN-761)|''Springfield'']]
|SSN-761
|29 January 1990
|4 January 1992
|9 January 1993
|
|style="background:#3f3;"|Active, in commission
|[[Naval Base Guam|Apra Harbor, GU]]<ref>{{Naval Vessel Register URL|id=SSN761|title=SSN761}}</ref>
|-
|[[USS Columbus (SSN-762)|''Columbus'']]
|SSN-762
|9 January 1991
|1 August 1992
|24 July 1993
|
|style="background:#3f3;"|Active, in commission
|[[Joint Base Pearl Harbor–Hickam|Pearl Harbor, HI]]<ref>{{Naval Vessel Register URL|id=SSN762|title=SSN762}}</ref>
|-
|[[USS Santa Fe (SSN-763)|''Santa Fe'']]
|SSN-763
|9 July 1991
|12 December 1992
|8 January 1994
|
|style="background:#3f3;"|Active, in commission
|[[Naval Base Point Loma|San Diego, CA]]<ref>{{Naval Vessel Register URL|id=SSN763|title=SSN763}}</ref>
|-
|[[USS Boise (SSN-764)|''Boise'']]
|SSN-764
|rowspan=4|[[Newport News Shipbuilding]], [[Newport News, Virginia|Newport News]]
|rowspan=4|6 February 1987
|25 August 1988
|23 March 1991
|7 November 1992
|rowspan=10|
|style="background:#3f3;"|Active, in commission
|[[Naval Station Norfolk|Norfolk, VA]]<ref>{{Naval Vessel Register URL|id=SSN764|title=SSN764}}</ref>
|-
|[[USS Montpelier (SSN-765)|''Montpelier'']]
|SSN-765
|19 May 1989
|23 August 1991
|13 March 1993
|style="background:#3f3;"|Active, in commission
|[[Naval Station Norfolk|Norfolk, VA]]<ref>{{Naval Vessel Register URL|id=SSN765|title=SSN765}}</ref>
|-
|[[USS Charlotte (SSN-766)|''Charlotte'']]
|SSN-766
|17 August 1990
|3 October 1992
|16 September 1994
|style="background:#3f3;"|Active, in commission
|[[Joint Base Pearl Harbor–Hickam|Pearl Harbor, HI]]<ref>{{Naval Vessel Register URL|id=SSN766|title=SSN766}}</ref>
|-
|[[USS Hampton (SSN-767)|''Hampton'']]
|SSN-767
|2 March 1990
|3 April 1992
|6 November 1993
|style="background:#3f3;"|Active, in commission
|[[Naval Base Point Loma|San Diego, CA]]<ref>{{Naval Vessel Register URL|id=SSN767|title=SSN767}}</ref>
|-
|[[USS Hartford (SSN-768)|''Hartford'']]
|SSN-768
|[[General Dynamics Electric Boat]], [[Groton, Connecticut|Groton]]
|30 June 1988
|22 February 1992
|4 December 1993
|10 December 1994
|style="background:#3f3;"|Active, in commission
|[[Naval Submarine Base New London|Groton, CT]]<ref>{{Naval Vessel Register URL|id=SSN768|title=SSN768}}</ref>
|-
|[[USS Toledo (SSN-769)|''Toledo'']]
|SSN-769
|rowspan=2|[[Newport News Shipbuilding]], [[Newport News, Virginia|Newport News]]
|rowspan=2|10 June 1988
|6 May 1991
|28 August 1993
|24 February 1995
|style="background:#3f3;"|Active, in commission
|[[Naval Submarine Base New London|Groton, CT]]<ref>{{Naval Vessel Register URL|id=SSN769|title=SSN769}}</ref>
|-
|[[USS Tucson (SSN-770)|''Tucson'']]
|SSN-770
|15 August 1991
|20 March 1994
|18 August 1995
|style="background:#3f3;"|Active, in commission
|[[Joint Base Pearl Harbor–Hickam|Pearl Harbor, HI]]<ref>{{Naval Vessel Register URL|id=SSN770|title=SSN770}}</ref>
|-
|[[USS Columbia (SSN-771)|''Columbia'']]
|SSN-771
|[[General Dynamics Electric Boat]], [[Groton, Connecticut|Groton]]
|rowspan=2|14 December 1988
|21 April 1993
|24 September 1994
|9 October 1995
|style="background:#3f3;"|Active, in commission
|[[Joint Base Pearl Harbor–Hickam|Pearl Harbor, HI]]<ref>{{Naval Vessel Register URL|id=SSN771|title=SSN771}}</ref>
|-
|[[USS Greeneville|''Greeneville'']]
|SSN-772
|rowspan=2|[[Newport News Shipbuilding]], [[Newport News, Virginia|Newport News]]
|28 February 1992
|17 September 1994
|16 February 1996
|style="background:#3f3;"|Active, in commission
|[[Joint Base Pearl Harbor–Hickam|Pearl Harbor, HI]]<ref>{{Naval Vessel Register URL|id=SSN772|title=SSN772}}</ref>
|-
|[[USS Cheyenne (SSN-773)|''Cheyenne'']]
|SSN-773
|28 November 1989
|6 July 1992
|16 April 1995
|13 September 1996
|style="background:#3f3;"|Active, in commission
|[[Joint Base Pearl Harbor–Hickam|Pearl Harbor, HI]]<ref>{{Naval Vessel Register URL|id=SSN773|title=SSN773}}</ref>
|}

Among the retired boats, a few were in commission for nearly 40 years or more, including ''Bremerton'' (40), ''Jacksonville'' (40), ''La Jolla'' (38) and ''San Francisco'' (41). With a wide variance in longevity, twelve boats were laid up halfway through their projected lifespans, with ''Baltimore'' being the youngest to be retired at only 15 years, 11 months.<ref name=fas /> Another five boats were also laid up early (within 20–25 years), due to their [[Refueling and overhaul|midlife reactor refueling]] being cancelled, and [[USS Miami (SSN-755)#2012 fire|one was lost during overhaul]] due to [[arson]]. All retired boats have been or will be scrapped per the Navy's [[Ship-Submarine Recycling Program]]. In addition, two boats, ''La Jolla'' and ''San Francisco'', have been converted to [[moored training ship]]s.

==In popular culture==
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* ''Los Angeles''-class submarines have been featured prominently in numerous [[Tom Clancy]] literary works and film adaptations, most notably {{USS|Dallas|SSN-700|6}} in ''[[The Hunt for Red October]]''.<ref>{{cite book|last=Clancy |first=Tom |author-link =Tom Clancy |title=The Hunt for Red October |url=https://archive.org/details/huntforredoctobe00clanrich |url-access=limited |publisher=Naval Institute Press |year=1984 |pages=[https://archive.org/details/huntforredoctobe00clanrich/page/71 71], 77, 81 |isbn=0-87021-285-0}}</ref> Other appearances include {{USS|Chicago|SSN-721|6}} in the novel ''[[Red Storm Rising]]'' and {{USS|Cheyenne|SSN-773|6}} in ''[[SSN (novel)|SSN]]''. In addition to fictional works, Clancy's 1993 non-fiction book ''[[Submarine (Clancy book)|Submarine: A Guided Tour Inside a Nuclear Warship]]'' features an in-depth exploration of {{USS|Miami|SSN-755|6}}.
* {{USS|Alexandria|SSN-757|6}} was used in the 2008 made-for-television film ''[[Stargate: Continuum]]''.<ref>{{cite web |url=http://www.comingsoon.net/news/movienews.php?id=19350 |title=''Stargate: Continuum'' to Film Scenes in the Arctic |date=14 March 2007 |publisher=comingsoon.net |access-date=19 July 2012 |url-status=live |archive-url=https://web.archive.org/web/20120924100834/http://www.comingsoon.net/news/movienews.php?id=19350 |archive-date=24 September 2012 }}</ref>
* ''[[688 Attack Sub]]'', a 1989 [[MS-DOS]] submarine simulator, allowed the player to control a ''Los Angeles''-class submarine during a set of [[Cold War]] missions. The game was also released for the [[Sega Genesis]] console.
* ''[[688(I) Hunter/Killer|Jane's 688(i) Hunter/Killer]]'', ''[[Sub Command]]'', ''[[Dangerous Waters (video game)|Dangerous Waters]]'', developed by Sonalysts Inc., and ''[[Cold Waters (video game)|Cold Waters]]'' by Killerfish Games, are video games where players control the 688i ''Los Angeles''-class submarine.

==See also==
{{Portal|Electronics}}
{{Div col|colwidth=30em}}
* [[List of active Los Angeles-class submarines by homeport|List of active ''Los Angeles''-class submarines by homeport]]
* [[List of submarine classes of the United States Navy]]
* [[List of submarines of the United States Navy]]
* [[List of submarine classes in service]]
* [[Submarines in the United States Navy]]
* [[Cruise missile submarine]]
* [[Attack submarine]]
{{div col end}}

==Notes==
{{reflist|colwidth=30em}}

==References==
* {{Naval Vessel Register}}
* {{cite book|last=Clancy |first=T. |author-link=Tom Clancy |year=1984 |title=The Hunt for Red October |location=[[Annapolis, Maryland]] |publisher=[[Naval Institute Press]] |isbn=0-87021-285-0}}
* {{cite book|last1=DiMercurio |first1=M. |last2=Benson |first2=M |year=2003 |title=The Complete Idiot's Guide to Submarines |location=[[New York City|New York]] |publisher=[[Alpha Books]] |isbn=978-0-02-864471-4}}
* {{cite book |last=Hutchinson |first=R |year=2001 |title=Jane's Submarines: War Beneath the Waves from 1776 to the Present Day |location=[[London]] |publisher=[[HarperCollins]] |isbn=978-0-00-710558-8 |url-access=registration |url=https://archive.org/details/janessubmarinesw0000hutc }}
* {{cite book|last1=Polmar |first1=N |last2=Moore |first2=K. J. |year=2003 |title=Cold War Submarines: The Design and Construction of U.S. and Soviet Submarines |location=[[Washington, D.C.]]  |publisher=[[Brassey's]] |isbn=1-57488-594-4}}
* {{cite book|last=Tyler |first=P. |author-link=Patrick Tyler |year=1986 |title=Running Critical |location=New York |publisher=[[Harper & Row]] |isbn=978-0-06-091441-7}}
* {{cite book |last=Waddle |first=S |author-link=Scott Waddle |year=2003 |title=The Right Thing |location=[[Nashville, Tennessee]] |publisher=Integrity Publishers |isbn=1-59145-036-5 |url=https://archive.org/details/rightthing00wadd }}
* {{cite book|last=Saunders |first=S |author-link=Commodore Stephen Saunders |year=2004 |title=[[Jane's Fighting Ships]], 2004-2005 |location=Coulsdon, Surrey, UK |publisher=Jane's Information Group Limited |isbn=0-7106-2623-1}}

==External links==
{{Commons category|Los Angeles class submarines}}
* [https://web.archive.org/web/20060218000124/http://www.submarinehistory.com/21stCentury.html Role of the Modern Submarine]'' at [http://www.submarinehistory.com Submarine History]''.

{{Los Angeles class submarines}}{{Active ship classes of the United States Navy}}{{Current SSN}}
{{US submarine classes after 1945}}
{{General Dynamics}}

{{DEFAULTSORT:Los Angeles Class Submarine}}
[[Category:Submarine classes]]
[[Category:Attack submarines]]
[[Category:Naval ships of the United States]]
[[Category:Los Angeles-class submarines| ]]
[[Category:Cold War submarines of the United States]]