View source for San Antonio-class amphibious transport dock

{{Short description|Warship class of the US Navy}}
{{Use dmy dates|date=August 2021}}
{|{{Infobox ship begin}}
{{Infobox ship image
| Ship image = [[File:US Navy 110609-N-VL218-336 The amphibious transport dock ships USS San Antonio (LPD 17) and USS New York (LPD 21) are underway together in the Atla.jpg|300px|border]]
| Ship caption = {{USS|San Antonio|LPD-17|6}} and {{USS|New York|LPD-21|6}} in June 2011
}}
{{Infobox ship class overview
| Builders = * [[Avondale Shipyard]] (before 2014)
* [[Ingalls Shipbuilding]] (after 2014)
| Operators = [[United States Navy]]
| Class before = *{{sclass|Austin|amphibious transport dock|1}}
*{{sclass|Newport|tank landing ship|1}}
*{{sclass|Charleston|amphibious cargo ship|1}}
*{{sclass|Whidbey Island|dock landing ship|1}}
| Class after = 
| Subclasses = 
| Cost = *$1.602 billion (avg. for class, FY2012)<ref name=FY13Budget>{{cite web |url=http://www.finance.hq.navy.mil/FMB/13pres/SCN_BOOK.pdf |title=DEPARTMENT OF THE NAVY FISCAL YEAR (FY) 2013 BUDGET ESTIMATES Shipbuilding and Conversion, Navy |page=13-1 |publisher=Department of the Navy |date=February 2012 |access-date=10 January 2013 |archive-url=https://web.archive.org/web/20130217095705/http://www.finance.hq.navy.mil/fmb/13pres/SCN_BOOK.pdf |archive-date=17 February 2013 |url-status=dead }} LPD-27 is the last scheduled member of the class, bought with $2.021B (FY2012)</ref>
*$2.021 billion (last ship, FY2012)<ref name=FY13Budget />
| Built range = 2000–present
| In commission range = 2006–present
| Total ships planned = 26 (13 for Flight I and 13 for Flight II)
| Total ships cancelled = 
| Total ships completed = 13
| Total ships on order = 4
| Total ships building = 2
| Total ships active = 13
| Total ships laid up = 
| Total ships lost = 
| Total ships retired = 
| Total ships preserved = 
}}
{{Infobox ship characteristics
| Hide header = 
| Header caption = <ref name= fact>{{cite web |url=https://www.navy.mil/Resources/Fact-Files/Display-FactFiles/Article/2222713/amphibious-transport-dock-lpd/ |title= Amphibious Transport Dock - LPD |date= 2021-01-21 |publisher= U.S. Navy }}</ref>
| Ship type = [[Amphibious transport dock]]
| Ship displacement = 25,300 t (full)
| Ship length = {{convert|684|ft|m|0|abbr=on}}
| Ship beam = {{convert|105|ft|m|0|abbr=on}}
| Ship draught = 
| Ship draft = {{convert|23|ft|m|1|abbr=on}}, full load
| Ship propulsion = Four sequentially turbocharged marine [[Colt-Pielstick]] [[diesel engine]]s, two shafts, 41,600 shp
| Ship speed = In excess of {{convert|22|kn|mph km/h}}
| Ship range = 
| Ship complement = *Crew: 28 officers, and 333 [[Enlisted rank|enlisted]] sailors
*Landing force: 66 officers, and 633 enlisted troops
| Ship sensors = [[AN/SPS-48]]G, [[AN/SPQ-9]]B<ref name=FY13Budget />
| Ship EW = [[AN/SLQ-32]]<ref name=FY13Budget />
| Ship boats = *2 × [[Landing Craft Air Cushion|LCAC]]s (air cushion) or
*1 × [[Landing Craft Utility|LCU]] (conventional); and
*14 × [[Amphibious Assault Vehicles]]
| Ship armament = *2 × [[Bushmaster II]] close-in-guns
*2 × [[RIM-116 Rolling Airframe Missile]] launchers
*2 × 8 cell [[Mark 41 Vertical Launching System]] for quad-packed [[ESSM]]s (not fitted)
*Several twin [[M2 Browning machine gun]] turrets
| Ship armour = 
| Ship armor = 
| Ship aircraft = Launch or land up to two [[MV-22 Osprey]] tilt-rotor aircraft simultaneously with room to place four MV-22s on the [[flight deck]] and one in the hangar deck
| Ship aircraft facilities = 
| Ship notes = 
}}
|}

The '''''San Antonio'' class''' is a [[Ship class|class]] of [[amphibious transport dock]]s, also called a "landing platform, dock" (LPD), used by the [[United States Navy]]. These warships replace the {{sclass|Austin|amphibious transport dock|0}} LPDs (including ''Cleveland'' and ''Trenton'' sub-classes), as well as the {{sclass|Newport|tank landing ship|0}} [[tank landing ship]]s, the {{sclass|Anchorage|dock landing ship|0}} dock landing ships, and the {{sclass|Charleston|amphibious cargo ship|0}} [[amphibious cargo ship]]s that have already been retired.<ref name= fact/>

Twelve ships of the ''San Antonio'' class were originally proposed, their original target price was [[US$]]890 million;<ref name=SAR2011>{{cite web |url= http://www.dod.mil/pubs/foi/logistics_material_readiness/acq_bud_fin/SARs/DEC%202011%20SAR/LPD%2017%20-%20SAR%20-%2031%20DEC%202011.pdf |title= LPD-17 Selected Acquisition Report (SAR) |access-date= 2013-01-10 |date= 2011-12-31 |publisher= Department of Defense |page= 21 |archive-url= https://web.archive.org/web/20130211004809/http://www.dod.mil/pubs/foi/logistics_material_readiness/acq_bud_fin/SARs/DEC%202011%20SAR/LPD%2017%20-%20SAR%20-%2031%20DEC%202011.pdf |archive-date= 11 February 2013 |url-status= live }}</ref> as built, their average cost is $1.6 billion.<ref name=FY13Budget /> Defense Authorization for Fiscal Year 2015 included partial funding for the twelfth ''San Antonio''-class ship. {{As of|2022|12}} eleven warships of this class were in service with the U.S. Navy, with an additional three ships under construction.<ref name=fact/> The Navy decided in 2018 to produce a second flight of 13 planned LPD Flight II ships, for a total of 26 in the LPD 17 class; LPD 30, ''Harrisburg'', is the first Flight II ship.<ref name=fact/>

==Design==
[[File:US Navy 030606-N-0000X-003 Artist's concept of the San Antonio Class amphibious transport dock ships.jpg|thumb|left|Artist's concept of the San Antonio Class amphibious transport dock ships]]

The ''San Antonio'' class was designed to provide the Navy and [[United States Marine Corps|U.S. Marine Corps]] with modern, sea-based platforms that are networked, survivable, and built to operate with 21st century transformational platforms, such as the [[MV-22 Osprey]], the (since canceled) [[Expeditionary Fighting Vehicle]] (EFV), [[air-cushioned landing craft]] (LCACs), and future means by which Marines are delivered ashore.<ref name= fact/> The ship is more than 45 percent larger than the ''Austin'' class, displacing more than 25,000 tons at full load. It carries fewer troops, but has twice as much space for vehicles, landing craft, and aircraft.<ref name=GlobalSecurity>{{cite web |url= http://www.globalsecurity.org/military/systems/ship/lpd-17.htm |title= LPD-17 SAN ANTONIO Class |publisher= Globalsecurity.org |date= 2011-07-07|archive-url= https://web.archive.org/web/20070916231235/http://www.globalsecurity.org/military/systems/ship/lpd-17.htm |archive-date= 16 September 2007 |url-status= live }}</ref> The ships are also suited to act as recovery ships for spacecraft, with a floodable well deck at the back of the vessel into which a capsule can float;  {{USS|Portland|LPD-27|2}} was the recovery ship for the [[Orion (spacecraft)|Orion capsule]] of the [[Artemis 1]] uncrewed Moon-orbiting mission on 11 December 2022.<ref>{{cite news| last=Amos | first=Jonathan | title=Nasa's Orion capsule on target for splashdown | website=BBC News | date=11 December 2022 | url=https://www.bbc.com/news/science-environment-63907649}}</ref>

The project embraced a "Design for Ownership" philosophy; a concurrent engineering approach that injects operator, maintainer, and trainer input into the design development process. The goal was to ensure that operational realities are considered throughout the total ship design, integration, construction, test and life cycle support of the new ships and their systems.<ref name=FAS-NSWCDD>{{cite web |url= http://www.fas.org/man/dod-101/sys/ship/docs/REPORT1.html |title= LPD 17 WORKSHOP REPORT / MISSIONS AND OPERATIONAL CAPABILITIES / (MONTEREY II) |access-date= 2014-04-09 |date= April 1996 |publisher= Naval Surface Warfare Center, Dahlgren Division |archive-url= https://web.archive.org/web/20140413155202/http://www.fas.org/man/dod-101/sys/ship/docs/REPORT1.html |archive-date= 13 April 2014 |url-status= live }}</ref> This process was intended to improve combat readiness, enhance quality of life, and reduce Total Ownership Costs, and resulted in numerous changes during the project.<ref name=FAS-NAVSEA>{{cite web |url= http://www.fas.org/man/dod-101/sys/ship/docs/990100-lpd17.htm |title= LPD 17—A Ship Built By and For the Expeditionary Warrior |access-date= 2014-04-09 |date= January 1999 |author= Gary L Pickens and Rear Admiral L. F. Picotte, USN (Ret.) |publisher= NAVSEA's Deckplate |archive-url= https://web.archive.org/web/20140722004724/http://fas.org/man/dod-101/sys/ship/docs/990100-lpd17.htm |archive-date= 22 July 2014 |url-status= live }}</ref>

The ''San Antonio'' class has significant survivability features and computer technology. In addition to [[RIM-116 Rolling Airframe Missile|Rolling Airframe Missile]] (RAM) protection from air threats, the class was designed to minimize radar signature. Techniques that reduce [[radar cross-section]] (RCS) make the ships more difficult to locate and target.<ref name= FAS-NAVSEA/> Enhanced survivability features include improved nuclear blast and fragmentation protection and a shock-hardened structure.<ref name=naval-technology>{{cite web |url= http://www.naval-technology.com/projects/lpd17/ |title= San Antonio Class Landing Platform Dock |access-date= 2014-04-09 |publisher= naval-technology.com |archive-url= https://web.archive.org/web/20130321081328/http://www.naval-technology.com/projects/lpd17 |archive-date= 21 March 2013 |url-status= live }}</ref> The fiber-optic shipboard-wide area network (SWAN) connects onboard-integrated systems. The network will allow "plug in and fight" configuration, updating and replacing hardware more easily when newer technology becomes available. Moreover, the class has extensive communications, command, control, and intelligence systems to support current and projected expeditionary warfare missions of the 21st century.<ref name= FAS-NAVSEA/>

The class is fitted with the integrated Ship Self-Defense System (SSDS).  The system fuses the radars and other sensors and controls the weapons systems for an automated fast reaction capability against air threats.<ref>{{Cite journal |url=https://www.jhuapl.edu/Content/techdigest/pdf/V22-N04/22-04-Norcutt.pdf|title=Ship Self-Defense System Architecture|journal=Johns Hopkins APL Technical Digest|volume=22|issue=4|year=2001|archive-url=https://web.archive.org/web/20160910124838/http://www.jhuapl.edu/techdigest/TD/td2204/Norcutt.pdf |archive-date=10 September 2016 |url-status=live }}</ref>

The [[Advanced Enclosed Mast/Sensor]]s (AEM/S) System mast, a 93-foot-high octagonal structure 35 feet in diameter, is constructed of a multi-layer frequency-selective composite material. It is designed to permit the ship's own sensor frequencies with very low loss while reflecting other frequencies. The tapered octagonal shape of the AEM/S is designed to reduce the radar cross section, and enclosing the antennas provides improved performance and greatly reduces maintenance costs.<ref name=FAS-LPD-17>{{cite web |url= http://www.fas.org/man/dod-101/sys/ship/lpd-17.htm |title= LPD-17 SAN ANTONIO-class |access-date= 2014-04-09 |date= 2004-09-15 |publisher= Federation of American Scientists |archive-url= https://web.archive.org/web/20140721195104/http://fas.org/man/dod-101/sys/ship/lpd-17.htm |archive-date= 21 July 2014 |url-status= live }}</ref> The composite mast was replaced by a conventional mast starting from [[USS Fort Lauderdale|USS ''Fort Lauderdale'']] as a transition to the [[LX(R)-class amphibious warfare ship]] design.<ref name="LPD-28 Keel">{{cite press release|url=http://newsroom.huntingtoningalls.com/releases/photo-release-huntington-ingalls-industries-authenticates-keel-of-amphibious-transport-ship-fort-lauderdale-lpd-28|title=Huntington Ingalls Industries Authenticates Keel Of Amphibious Transport Ship Fort Lauderdale (LPD 28)|publisher=Huntington Ingalls Industries|date=13 October 2017|access-date=13 October 2017}}</ref>

The ''San Antonio''-class also incorporates the latest quality of life standards for the embarked Marines and sailors, including sit-up berths, a ship services mall, a learning resource center, and a fitness center. Medical facilities include two operating rooms and 124 beds. Additionally, they are the first USN ships designed to accommodate sailors and Marines of both sexes as part of the crew and embarked troops.<ref name=GlobalSecurity/>

By mid-2016, the Navy and Marine Corps were studying installing a [[vertical launch system]] (VLS) into ''San Antonio''-class ships so they could field larger offensive missiles.  The original ship concept included two 8-cell [[Mk 41 VLS]] in the bow, which is being reexamined to add [[Tomahawk (missile family)|Tomahawk cruise missile]]s to support Marines ashore with little modification to the combat system.<ref>[https://news.usni.org/2016/10/13/vertical-launch-system-san-antonio-amphibs Navy, Marine Corps Considering Adding Vertical Launch System to San Antonio Amphibs] {{Webarchive|url=https://web.archive.org/web/20161018081835/https://news.usni.org/2016/10/13/vertical-launch-system-san-antonio-amphibs |date=18 October 2016 }} - News.USNI.org, 13 October 2016</ref>

==History==
Following the extended [[USS San Antonio (LPD-17)#Criticism|problems and incidents]] experienced by {{USS|San Antonio|LPD-17|6}}, the U.S. Department of Defense's [[Director, Operational Test and Evaluation]] (DOT&E), stated in 2010 that the ships are "capable of operating 'in a benign environment', but not effective, suitable and not survivable in a combat situation".<ref>Capaccio, Tony [https://www.bloomberg.com/news/2010-10-28/northrop-navy-ships-not-survivable-in-combat-u-s-defense-official-says.html Northrop Navy Ships `Not Survivable' in Combat, Official Says] {{Webarchive|url=https://web.archive.org/web/20150105032704/http://www.bloomberg.com/news/2010-10-28/northrop-navy-ships-not-survivable-in-combat-u-s-defense-official-says.html |date=5 January 2015 }} Bloomberg, 28 October 2010</ref> The DOT&E found in 2011 that the first ship of the class, USS ''San Antonio'', had several deficiencies which rendered it "not operationally effective, suitable, or survivable in a hostile environment".<ref>[http://www.dote.osd.mil/pub/reports/FY2011/pdf/navy/2011lpd17.pdf "LPD-17 San Antonio Class Amphibious Transport Dock"] {{Webarchive|url=https://web.archive.org/web/20140202155209/http://www.dote.osd.mil/pub/reports/FY2011/pdf/navy/2011lpd17.pdf |date=2 February 2014 }}. DOT&E</ref> In April 2015, the USN proposed adding a 12th ship to the class,<ref>{{cite news |url=https://www.defensenews.com/home/2015/04/05/new-us-navy-fleet-goal-308-ships/ |title=New US Navy Fleet Goal: 308 Ships |last1=Cavas |first1=Christopher P. |date=5 April 2015 |website=defensenews.com |publisher=Gannett |access-date=6 April 2015}}</ref> which will be built at Ingalls in exchange for a destroyer to be named later.<ref>{{cite news |url=http://www.defensenews.com/story/defense/naval/ships/2015/12/04/amphibious-ship-destroyer-huntington-ingalls-general-dynamics-bath-iron-works-shipbuilding/76806676/ |title=New Amphibious Ship Ordered for Navy, Destroyer To Come |last1=Cavas |first1=Christopher P. |date=4 December 2015 |website=defensenews.com |publisher=TEGNA |access-date=4 December 2015}}</ref> On 4 December 2015, the 12th ship was ordered.<ref>{{Cite web |url=http://www.fool.com/investing/general/2015/12/26/two-new-warships-en-route-to-us-navy.aspx |title=2 New Warships en Route to U.S. Navy |date=26 December 2015 |access-date=27 December 2015 |archive-url=https://web.archive.org/web/20151229010429/http://www.fool.com/investing/general/2015/12/26/two-new-warships-en-route-to-us-navy.aspx |archive-date=29 December 2015 |url-status=live }}</ref>

===Derivatives===
{{see also|LX(R)-class amphibious warfare ship}}
U.S. senator [[Kay Hagan]] has asked if the LPD-17 construction line should be extended to a 12th ship as a bridge to building the [[LX(R)]] (formerly LSD(X)) on the same hull, but the USN has indicated that the requirements of the LX(R) have not yet been settled and that the LPD-17 hull might be too large for such a mission.<ref>O'Rourke, Ronald. [http://opencrs.com/document/RL34476/2011-03-16/?26236 "Navy LPD-17 Amphibious Ship Procurement: Background, Issues, and Options for Congress."] {{Webarchive|url=https://web.archive.org/web/20120312053612/http://opencrs.com/document/RL34476/2011-03-16/?26236 |date=12 March 2012 }} ''Congressional Research Service'', 16 March 2011.</ref> However, Commandant [[James F. Amos]] had also endorsed dropping LSD in favor of continued LPD production.<ref>[http://www.c-spanvideo.org/program/311966-1 "Navy League Conference 2013 speeches on the future of the maritime services."]</ref>

In October 2014, Secretary of the Navy [[Ray Mabus]] signed an internal memo recommending that the LX(R) warship be based on the existing ''San Antonio''-class design. The LPD-17 design was selected over a foreign variant, and an entirely new design to meet required capability, capacity, and cost parameters. Official selection of basing the LX(R) off the LPD-17 design still has to come with Milestone A approval.<ref>[http://news.usni.org/2014/10/20/memo-hull-based-san-antonio-design-navys-preferred-option-next-generation-amphib Memo: Hull Based on San Antonio Design is Navy’s Preferred Option for Next Generation Amphib] {{Webarchive|url=https://web.archive.org/web/20141021081427/http://news.usni.org/2014/10/20/memo-hull-based-san-antonio-design-navys-preferred-option-next-generation-amphib |date=21 October 2014 }} - USNI.org, 20 October 2014.</ref> The [[National Defense Authorization Act for Fiscal Year 2015]] included partial funding for a twelfth ''San Antonio''-class ship (LPD-28).<ref>{{cite web |title=Navy Gains a Ship, 15 Growlers in Defense Bill |url=http://www.defensenews.com/article/20141212/DEFREG/312120029/Navy-Gains-Ship-15-Growlers-Defense-Bill |website=Defense News |access-date=November 2, 2021 |archive-url=https://archive.today/20141214220645/http://www.defensenews.com/article/20141212/DEFREG/312120029/Navy-Gains-Ship-15-Growlers-Defense-Bill |archive-date=2014-12-14 |language=en}}</ref> In early 2014, Huntington Ingalls Industries (HII) displayed its Flight IIA version of the LPD-17 hull for the Navy's LX(R) amphibious ship. The design is further modified by removing some of the higher-end capabilities of the ''San Antonio'' class to create an "amphibious truck" to replace the {{sclass|Whidbey Island|dock landing ship|5}} and {{sclass|Harpers Ferry|dock landing ship|5}} [[landing ship dock]]s. The Flight IIA has improved command and control (C2) features over the LSDs, half the medical spaces of the LPD-17, a smaller hangar, no composite masts, two unspecified main propulsion diesel engines (MPDE), two spots for LCACs or one LCU, a reduced troop capacity (500), and a crew of about 400 sailors.<ref>[http://news.usni.org/2014/11/21/navys-next-generation-amphibious-ship-look-like "What the Navy’s Next Generation Amphibious Ship Could Look Like"] {{Webarchive|url=https://web.archive.org/web/20141123210826/http://news.usni.org/2014/11/21/navys-next-generation-amphibious-ship-look-like |date=23 November 2014 }} News.USNI.org, 21 November 2014</ref> In January 2015, the Navy and Marine Corps decided to go with the modified LPD-17 hull for the LX(R) program.<ref>{{Cite web|url=http://www.defensenews.com/story/defense/naval/ships/2015/01/30/navy-oiler-amphibious-ships-shipbuilding-construction-taox-lha-lhd-assault-ingalls-nassco/22606093/|title = Bidding for New Oiler, Amphibs to be Bundled|date = 8 August 2017}}</ref>

Chief of Naval Operations Greenert considered using some of the extra space in the ''San Antonio'' class to mount modular equipment in the same fashion as the [[littoral combat ship]]s.<ref>Freedberg, Sydney J. Jr. [http://defense.aol.com/2012/04/18/modular-trucks-will-rule-the-waves-cno/ "Modular 'Trucks' Will Rule The Waves: CNO."] {{Webarchive|url=https://web.archive.org/web/20120422071438/http://defense.aol.com/2012/04/18/modular-trucks-will-rule-the-waves-cno/ |date=22 April 2012 }} ''Aol Defense''. 18 April 2012.</ref> As part of their bid to offer "Flight II" LPD-17s for the [[dock landing ship]] replacement contract, HII has suggested fitting out the ships to carry the [[Aegis Ballistic Missile Defense System]].<ref>[http://www.defensedaily.com/free/HII-Pitching-BMD-Role-For-LPD-17-Hull_20355.html "HII Pitching BMD Role For LPD-17 Hull."]</ref><ref>{{Cite web |url=http://www.huntingtoningalls.com/flight2/index |title=LPD Flight II. |access-date=23 January 2013 |archive-url=https://web.archive.org/web/20130122181732/http://www.huntingtoningalls.com/flight2/index |archive-date=22 January 2013 |url-status=live }}</ref> Although there is no formal requirement for the BMD variant, HII report unofficial support for it within the U.S. Navy, such that it will be modeled in wargame scenarios in 2016 and 2017. It could accommodate up to 288 Mk41 VLS missile tubes and a radar with 1000 times the sensitivity of the SPY-1D radar of the Burke destroyers.<ref>{{cite web |url=http://www.janes.com/article/60489/navy-league-2016-huntington-ingalls-industries-notes-increasing-interest-in-bmd-ship-concept |title=Navy League 2016: Huntington Ingalls Industries notes increasing interest in BMD ship concept |first=Richard D |last=Fisher Jr |publisher=IHS Jane's Navy International |date=19 May 2016 |access-date=22 May 2016 |archive-url=https://web.archive.org/web/20160520130520/http://www.janes.com/article/60489/navy-league-2016-huntington-ingalls-industries-notes-increasing-interest-in-bmd-ship-concept |archive-date=20 May 2016 |url-status=live }}</ref>

===Flight II===
{{main|LX(R)-class amphibious warfare ship}}
On 2 August 2018, the U.S. Navy and Huntington Ingalls signed a contract for long lead items for LPD-30, the first of the 13-ship more affordable Flight II class. The contract was for US$165.5M. The cost goal is US$1.64B for the first ship and $1.4B for subsequent ships. LPD-30 will be fitted with a Raytheon [[AN/SPY-6]] ''Enterprise Air Surveillance Radar'', an upgrade over the [[AN/SPS-48]] currently in LPD-17s.<ref name="2018-08-03_DN">[https://www.defensenews.com/breaking-news/2018/08/03/us-navy-awards-huge-contract-to-huntington-ingalls-for-its-newest-class-of-amphibious-vessels/ "US Navy awards major contract to Huntington Ingalls for its newest class of amphibious vessels"], David B. Larter, [[Defense News]], 2018-08-03</ref> Huntington Ingalls will build the new flight exclusively.<ref name="NN">{{cite news |last1=Abdi |first1=Zach |title=US Navy Reverses Course on San Antonio-class Flight II Ship Buys |url=https://www.navalnews.com/naval-news/2023/08/us-navy-reverses-course-on-san-antonio-class-flight-ii-ship-buys |access-date=14 October 2025 |work=Naval News |date=8 July 2023}}</ref><ref name="2018-08-03_DN" /> On 26 March 2019, Huntington Ingalls announced the award of a US$1.47 billion, fixed-price incentive contract for LPD 30 (14th ship and first of Flight II). On 10 October 2019, the name of the ship was announced as {{USS|Harrisburg|LPD-30|6}} for [[Harrisburg, Pennsylvania|Harrisburg]], [[Pennsylvania]], the [[Pennsylvania State Capitol Complex|state's capital]].<ref name="2019-10-10_NT">[https://www.navytimes.com/news/your-navy/2019/10/10/the-navy-named-its-next-warship-after-this-city/ The Navy named its next warship after this city], [[Navy Times]], 2019-10-10</ref> On 3 April 2020, Huntington Ingalls announced that it was awarded a $1.5 billion contract modification for the construction of {{USS|Pittsburgh|LPD-31|6}}, named for [[Pittsburgh, Pennsylvania|Pittsburgh]], [[Pennsylvania]].<ref name="LPD-31 Award">{{cite press release |url=https://newsroom.huntingtoningalls.com/releases/photo-release-huntington-ingalls-industries-awarded-1-50-billion-contract-for-the-construction-of-lpd-31 |title=Huntington Ingalls Industries Awarded $1.50 Billion Contract for the Construction of LPD 31 |publisher=[[Huntington Ingalls Industries]] |date=3 April 2020|access-date=5 April 2020}}</ref>

The Flight II ships are intended to provide the mission currently provided by the Whidbey Island-class dock landing ships and incorporate more than 200 changes over the Flight I ships. The mission provided by Flight II ships will include airport, seaport, and hospital operations and incorporate modifications to the ships’ well decks. <ref>{{cite web |url=
https://nationalinterest.org/blog/buzz/navy-building-first-flight-ii-san-antonio-class-amphibious-transport-docks-199840 |title=The Navy Is Building the First Flight II San Antonio-Class Amphibious Transport Docks |first=Kris |last=Osborne |publisher=National Interest |date=24 January 2022 |access-date=31 July 2022}}</ref>

{{As of|2023|3}}, the US Navy is proposing to temporarily halt acquiring additional ''San Antonio''-class ships beyond LPD-32. This move would be part of a "strategic pause," according to Navy Secretary [[Carlos Del Toro]], that would allow the force to better examine what they need to get out of the ships and how many they ultimately need. Under this plan, LPD-32 would be purchased in the 2022–2023 fiscal year.<ref>{{Cite news |last=Eckstein |first=Megan |date=2023-02-28 |title=US Navy reviews cost-saving design changes before resuming amphib buys |url=https://www.defensenews.com/naval/2023/02/28/us-navy-reviews-cost-saving-design-changes-before-resuming-amphib-buys/ |access-date=2023-03-14 |website=Defense News |language=en}}</ref><ref>{{Cite news |first=Mallory |last=Shelbourne |date=2023-03-10 |title=FY2024 Budget: Navy Won't Buy Any More San Antonio Amphibs in the Next Five Years |url=https://news.usni.org/2023/03/09/fy2024-budget-navy-wont-buy-any-more-san-antonio-amphibs-in-the-next-five-years |access-date=2023-03-14 |website=USNI News |language=en-US}}</ref>

In August 2024, Congress authorized the Navy to begin a multi-year procurement of three ships.<ref name=":1" /><ref name=":2" /> The multi-year procurement deal, spanning FY25 to FY29, will save an estimated $901M compared to individual ship buys. These three ships are excluded from this page's "on order" counts until formally executed.

==Ships of the class==
{| class="wikitable"
! Name !!style="line-height:1.2em;"| Hull number !! Builder
!Fiscal Year Awarded!! Laid down !! Launched !! Commissioned !! Home port !! Status
|-
| colspan="9" style="background: #80D8FF;text-align:center;" |{{center|Flight I}}
|-
| {{USS|San Antonio|LPD-17|2}}
| LPD-17
| [[Avondale Shipyard|Avondale]]
|
| 9 December 2000
| 12 July 2003
| 14 January 2006
| [[Naval Station Norfolk|Norfolk]], [[Virginia]]
|Active
|-
| {{USS|New Orleans|LPD-18|2}}
| LPD-18
| Avondale
|
| 14 October 2002
| 11 December 2004
| 10 March 2007
| [[United States Fleet Activities Sasebo|Sasebo, Nagasaki]]
|Active
|-
| {{USS|Mesa Verde|LPD-19|2}}
| LPD-19
| [[Ingalls Shipbuilding|Ingalls]]
|
| 25 February 2003
| 19 November 2004
| 15 December 2007
| [[Naval Station Norfolk|Norfolk]], [[Virginia]]
|Active
|-
| {{USS|Green Bay|LPD-20|2}}
| LPD-20
| Avondale
|
| 11 August 2003
| 11 August 2006
| 24 January 2009
| [[Naval Base San Diego|San Diego]], [[California]]
|Active
|-
| {{USS|New York|LPD-21|2}}
| LPD-21
| Avondale
|
| 10 September 2004
| 19 December 2007
| 7 November 2009
| [[Naval Station Norfolk|Norfolk]], [[Virginia]]
|Active
|-
| {{USS|San Diego|LPD-22|2}}
| LPD-22
| Ingalls
|
| 23 May 2007
| 7 May 2010
| 19 May 2012
| [[United States Fleet Activities Sasebo|Sasebo, Nagasaki]]
|Active
|-
| {{USS|Anchorage|LPD-23|2}}
| LPD-23
| Avondale
|
| 24 September 2007
| 12 February 2011
| 4 May 2013
| [[Naval Base San Diego|San Diego]], [[California]]
| Active
|-
| {{USS|Arlington|LPD-24|2}}
| LPD-24
| Ingalls
|
| 26 May 2008
| 23 November 2010
| 8 February 2013
| [[Naval Station Norfolk|Norfolk]], [[Virginia]]
| Active
|-
| {{USS|Somerset|LPD-25|2}}
| LPD-25
| Avondale
|
| 11 December 2009
| 14 April 2012
| 1 March 2014
| [[Naval Base San Diego|San Diego]], [[California]]
| Active<ref>{{cite web |url=https://armyrecognition.com/news/navy-news/2013/ingalls-built-amphibious-transport-dock-somerset-lpd-25-completes-acceptance-trials |title=Ingalls-built Amphibious Transport Dock Somerset (LPD 25) Completes Acceptance Trials |date=11 October 2013 |access-date=13 October 2013 |archive-url=https://web.archive.org/web/20131014173133/http://www.navyrecognition.com/index.php/news/defence-news/year-2013-news/october-2013-navy-world-naval-forces-maritime-industry-technology-news/1297-ingalls-built-amphibious-transport-dock-somerset-lpd-25-completes-acceptance-trials.html |archive-date=14 October 2013 |url-status=live }}</ref>
|-
| {{USS|John P. Murtha|LPD-26|2}}
| LPD-26
| Ingalls
|
| 6 February 2012
| 30 October 2014<ref name="NVR LPD26">{{cite web|url={{Naval Vessel Register URL|id=LPD26}} |title=John P Murtha (LPD 26) |publisher=[[Naval Vessel Register]] |access-date=25 July 2016}}</ref>
| 8 October 2016
| [[Naval Base San Diego|San Diego]], [[California]]
| Active<ref name="NR-353-16 ">{{cite press release |url=https://www.defense.gov/News/Releases/Release/Article/968004/navy-to-commission-amphibious-transport-dock-john-p-murtha/ |title=Navy to Commission Amphibious Transport Dock John P. Murtha |date=7 October 2016 |number=NR-353-16 |publisher=U.S. Department of Defense |access-date=8 October 2016 |archive-url=https://web.archive.org/web/20161010084353/http://www.defense.gov/News/News-Releases/News-Release-View/Article/968004/navy-to-commission-amphibious-transport-dock-john-p-murtha |archive-date=10 October 2016 |url-status=live }}</ref>
|-
| {{USS|Portland|LPD-27|2}}
| LPD-27
| Ingalls
|
| 2 August 2013
| 13 February 2016<ref>{{cite web|title=Future USS Portland (LPD 27) Launches|url=http://www.navy.mil/submit/display.asp?story_id=93113|publisher=[[United States Navy]]|date=14 February 2016|access-date=14 February 2016|archive-url=https://web.archive.org/web/20160215094217/http://www.navy.mil/submit/display.asp?story_id=93113|archive-date=15 February 2016|url-status=dead}}</ref>
| 14 December 2017<!----DO NOT CHANGE THIS DATE. SHE WAS COMMISSIONED IN DECEMBER, THE CEREMONY WAS THE FOLLOWING APRIL.----><ref name=NVR_LPD27>{{cite web |url={{Naval Vessel Register URL|id=LPD27}} |title=Portland (LPD 27) |publisher=[[Naval Vessel Register]] |access-date=25 July 2016}}</ref>
| [[Naval Base San Diego|San Diego]], [[California]]
| Active
|-
| colspan="9" style="background: #80D8FF;text-align:center;" |{{center|Flight I (Transitional)}}
|-
| {{USS|Fort Lauderdale|LPD-28|2}}
| LPD-28
| Ingalls
|
| 13 October 2017
| 28 March 2020
| 30 July 2022<ref>{{cite web|url=https://www.navy.mil/Press-Office/Press-Releases/display-pressreleases/Article/3109963/navy-to-commission-amphibious-transport-dock-ship-fort-lauderdale/|title=Navy to Commission Amphibious Transport Dock Ship Fort Lauderdale|publisher=navy.mil|date=29 July 2022|access-date=30 July 2022}}</ref>
| [[Naval Station Norfolk|Norfolk]], [[Virginia]]
| Active
|-
| {{USS| Richard M. McCool Jr.|LPD-29|2}}
| LPD-29
| Ingalls
|
| 12 April 2019
| 5 January 2022
| 7 September 2024
| [[Naval Station Norfolk|Norfolk]], [[Virginia]]
| Active
|-
| colspan="9" style="background: #80D8FF;text-align:center;" |{{center|Flight II}}
|-
| {{USS|Harrisburg|LPD-30|2}}
| LPD-30
| Ingalls
|
| 28 January 2022<ref name="LPD-30 keel">{{cite press release|url=https://www.navsea.navy.mil/Media/News/Article/2916394/keel-authenticated-for-future-uss-harrisburg/|title= Keel Authenticated for Future USS Harrisburg|publisher=United States Navy|date=28 January 2022|access-date=31 January 2022}}</ref>
| 5 October 2024
|
|
| Launched<ref name="NVR LPD30">{{cite web|url={{Naval Vessel Register URL|id=LPD30}} |title=Harrisburg (LPD-30) |publisher=[[Naval Vessel Register]] |access-date=15 January 2022}}</ref>
|-
| {{USS|Pittsburgh|LPD-31|2}}
| LPD-31
| Ingalls
|
| 2 June 2023
|
|
|
|Under construction <ref name="LPD-31 Award" /><ref>Archived at [https://ghostarchive.org/varchive/youtube/20211211/r51WpCbUYVk Ghostarchive]{{cbignore}} and the [https://web.archive.org/web/20210122163904/https://www.youtube.com/watch?v=r51WpCbUYVk Wayback Machine]{{cbignore}}: {{Cite web|title=Secretary of the Navy Kenneth J. Braithwaite - Growing the Fleet| website=[[YouTube]] |url=https://www.youtube.com/watch?v=r51WpCbUYVk}}{{cbignore}}</ref>
|-
| {{USS|Philadelphia|LPD-32|2}}
| LPD-32
| Ingalls
|
| 3 January 2025 
|
|
|
|Under construction<ref name="LPD-32 award">{{cite press release|url=https://newsroom.hii.com/releases/hii-awarded-advance-procurement-contract-lpd-32|title=HII Awarded $240 Million Advance Procurement Contract for LPD 32|publisher=[Huntington Ingalls Industries]|date=16 June 2022|access-date=29 July 2022}}</ref><ref>{{cite web|url=https://www.navalnews.com/naval-news/2023/10/final-san-antonio-class-lpd-will-be-named-uss-philadelphia/|title=Final San Antonio-Class LPD Will Be Named USS Philadelphia|website=navalnews.com|date=12 October 2023|access-date=30 October 2023}}</ref><ref name="LPD-33">{{cite news |title=US Navy’s third Flight II LPD takes shape |url=https://www.naval-technology.com/news/flight-ii-lpd-hii-fabrication/?cf-view&cf-closed |access-date=14 October 2025 |work=Naval Technology |publisher=GlobalData PLC |date=30 January 2025}}</ref>
|-
| {{USS|Travis Manion|LPD-33|2}}
| LPD-33
| Ingalls
|FY25 (planned)
|
|
|
|
|Authorized<ref name=":0">{{cite web|title=Senate FY 2023 Appropriations Bill Adds $4B to Navy Shipbuilding, Money for New Amphibs|url=https://news.usni.org/2022/07/28/senate-fy-2023-appropriations-bill-adds-4b-to-navy-shipbuilding-money-for-new-amphibs#more-96202|publisher=[[United States Naval Institute|USNI News]]|date=28 July 2022|access-date=28 July 2022}}</ref><ref name=":1">{{Cite web |date=August 14, 2024 |title=Congressional Notice |url=https://subscriber.politicopro.com/f/?id=00000191-56ea-d687-a3db-feff37f10000 |url-status=live |archive-url=https://archive.today/20240816122247/https://subscriber.politicopro.com/f/?id=00000191-56ea-d687-a3db-feff37f10000 |archive-date=August 16, 2024 |access-date=August 16, 2024 |website=Politico}}</ref><ref name=":2">{{Cite news |title=Navy secures multi-ship amphib buy, saving estimated $1B: Lawmaker |url=https://breakingdefense.com/2024/08/navy-secures-multi-ship-amphib-buy-saving-estimated-1b-lawmaker/ |access-date=August 16, 2024 |work=Breaking Defense}}</ref>
|-
|TBD
|LPD-34
|Ingalls
|FY27 (planned)
|
|
|
|
|Authorized<ref name=":0" /><ref name=":1" /><ref name=":2" />
|-
|TBD
|LPD-35
|Ingalls
|FY29 (planned)
|
|
|
|
|Authorized<ref name=":0" /><ref name=":1" /><ref name=":2" />
|}

== Gallery ==
<gallery mode="packed">
File:US Navy 020830-N-9999T-002 Pre-commissioning unit San Antonio (LPD 17).jpg|{{USS|San Antonio|LPD-17|6}} during construction at Avondale, 2002
File:Uss san antonio 1330453.jpg|Port-bow view of {{USS|San Antonio|LPD-17|6}}.
File:US Navy 070305-N-7427G-001 Pre-Commissioning Unit New Orleans (LPD 18) leaves Avondale Shipyard and transits up the Mississippi River toward her commissioning site in New Orleans.jpg|Port-quarter view of {{USS|New Orleans|LPD-18|6}}.
File:Steel from WTC for USS New York.jpg|Steel from the [[World Trade Center (1973–2001)|World Trade Center]] is poured for construction of {{USS|New York|LPD-21|6}}
File:Lpd17-062000.gif|Elevation of LPD-17-class ship.
File:San Antonio class rendering.jpg|Cutaway illustration of the U.S. Navy's ''San Antonio''-class amphibious transport dock ship (LPD).
</gallery>

==References==
{{Reflist}}

==External links==
{{Commons category|San Antonio class amphibious transport docks}}
*[https://www.navy.mil/navydata/fact_display.asp?tid=600&ct=4 Amphibious Transport Dock - LPD (San Antonio class) page]{{dead link|date=April 2025|bot=medic}}{{cbignore|bot=medic}} on Navy.mil
*[http://ingalls.huntingtoningalls.com/products/lpd/index San Antonio class Landing Platform Dock] on Ingalls Shipbuilding's site
*{{usurped|1=[https://web.archive.org/web/20070912040136/http://www.military-today.com/navy/san_antonio_class.htm San Antonio class Amphibious transport dock]}} on Military today site
*[http://www.navyrecognition.com/index.php?option=com_content&task=view&id=1627 San Antonio Class (LPD 17) Amphibious Transport Dock]{{Dead link|date=August 2025 |bot=InternetArchiveBot |fix-attempted=yes }} on navyrecognition.com

{{San Antonio class amphibious transport dock}}{{Active ship classes of the United States Navy}}{{DEFAULTSORT:San Antonio Class Amphibious Transport Dock}}

[[Category:San Antonio-class amphibious transport docks| ]]
[[Category:Amphibious warfare vessel classes]]