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| In service range =
| In commission range = 2008–present
| Total ships building =
| Total ships planned = 11<ref name= NSC11/> (Option for 12th)<ref name= "Sep2022_rpt_procure"/><ref name= "USCG_NSC_program">{{cite web|url=https://www.dcms.uscg.mil/Our-Organization/Assistant-Commandant-for-Acquisitions-CG-9/Programs/Surface-Programs/National-Security-Cutter/|title=National Security Cutter|publisher=United States Coast Guard|access-date=20 October 2022}}</ref>
| Total ships on order =
| Total ships completed =
| Total ships cancelled =
| Total ships active =
| Total ships laid up =
| Total ships lost =
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| Header caption =
| Ship class =
| Ship type = [[United States Coast Guard Cutter]] / Large patrol vessel
| Ship displacement = {{convert|
| Ship length = {{convert|418|ft}}
| Ship beam = {{convert|54|ft}}
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| Ship power = 3 × [[Caterpillar Inc.|Caterpillar]] 3512B diesel generators
| Ship propulsion = *[[Combined diesel and gas]]
*2 × {{convert|7,400|kW|abbr=on}} [[MTU Friedrichshafen|MTU]] 20V 1163 diesels
*1 × {{convert|22|MW|abbr=on}} [[General Electric LM2500|GE LM2500]] gas turbine engine<ref>{{cite web|url=http://dieselman.wordpress.com/2008/01/30/mtu-powers-deepwater-national-security-cutter|title=MTU Powers Deepwater National Security Cutter|work=The world of Dieselman - MTU|date=January 30, 2008|access-date=2012-03-30|archive-url=https://web.archive.org/web/20120310190837/http://dieselman.wordpress.com/2008/01/30/mtu-powers-deepwater-national-security-cutter/|archive-date=2012-03-10|url-status=live}}</ref>
| Ship speed = Over {{convert|28|kn}}
| Ship range = {{convert|12,000|nmi}}
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|}
{{DISPLAYTITLE:Legend-class cutter|noerror}}
The '''Legend-class cutter''', also known as the '''National Security Cutter''' ('''NSC''') and '''Maritime Security Cutter, Large''', is the largest active patrol [[cutter (boat)|cutter]] class of the [[United States Coast Guard]], with the size of a [[frigate]]. Entering into service in 2008, the Legend class is the largest of
==Mission==
These vessels can be used for a variety of tasks, including environmental protection, search and rescue, fisheries protection, ports, waterways, and coastal security, counterterrorism activities, law enforcement, drug interdiction, defense operations, and other military
==Design==
The Legend-class cutters are the second-longest of all U.S. Coast Guard cutters, behind the research icebreaker {{USCGC|Healy|WAGB-20|2}}, and
Operations in this environment can be general defense operations, including theater security, port protection, ship escort, [[Anti-piracy measures|anti-piracy]], and maritime interception operations. The cutters can survive in medium-threat environments, which can include a fairly well equipped military of ships and aircraft with weapons and radar coverage well offshore, higher numbers of anti-ship cruise missiles, and a possible submarine threat. Operations in this threat environment could include defense operations, naval surface fire support, and the evacuation of noncombatants. The cutters are not expected to survive in a high-threat environment with their current configuration.<ref>{{cite web|title=Deepwater Project Bofors Defense 57-mm L|url=http://www.ppt-sharing.com/ppt-presentation/deepwater-project-bofors-defense-57-mm-l|website=ppt-sharing.com|access-date=2 October 2017|archive-url=https://web.archive.org/web/20171003030434/http://www.ppt-sharing.com/ppt-presentation/deepwater-project-bofors-defense-57-mm-l|archive-date=3 October 2017|url-status=live}}</ref>
The cutter has a rear-launching ramp, capable of launching and retrieving the two aft-stored RHIBs while underway.<ref name=DeepwaterSRP>{{cite web |url=http://www.uscg.mil/deepwater/system/srp.htm |title=Short Range Prosecutor (SRP) |publisher=[[Integrated Deepwater System Program]] |access-date=2007-09-01 |archive-url=https://web.archive.org/web/20070503141238/http://www.uscg.mil/DEEPWATER/system/srp.htm |archive-date=2007-05-03 |url-status=live }}</ref><ref name=ZodiacSRP>{{cite web |url=http://www.zodiacmilpro.com/product/sbyt/info/770DJSRP.pdf |title=H770 DJ Short Range Prosecutor (technical specifications) |publisher=[[Zodiac Group]] |access-date=2007-09-01 |url-status=dead |archive-url=https://web.archive.org/web/20070928044751/http://www.zodiacmilpro.com/product/sbyt/info/770DJSRP.pdf |archive-date=2007-09-28 }}</ref> The NSC is built to about 90% military standards.<ref>{{cite web|title=COAST GUARD CUTTER PROCUREMENT|url=http://www.kmimediagroup.com/navy-air-sea-peo-forum/445-articles-npeo/coast-guard-cutter-procurement/6512-coast-guard-cutter-procurement|website=kmimediagroup.com|publisher=USCG|access-date=19 January 2017|archive-url=https://web.archive.org/web/20170131193127/http://www.kmimediagroup.com/navy-air-sea-peo-forum/445-articles-npeo/coast-guard-cutter-procurement/6512-coast-guard-cutter-procurement|archive-date=31 January 2017|url-status=usurped}}</ref> The NSC is constructed with a steel hull and steel superstructure with steel bulkheads. Ballistic protection is provided for the main gun, and the cutter's crew-served weapons can have steel ballistic shields attached for protection.<ref>{{cite web|title=57mm Mk 110 Mod 0 Naval Gun System|url=https://www.baesystems.com/en-us/download-en-us/20170726161933/1434555371520.pdf|website=www.baesystems.com|access-date=22 February 2018|quote=The Mk 110 weather shield provides environmental and ballistic protection for the gun system|archive-url=https://web.archive.org/web/20180223051512/https://www.baesystems.com/en-us/download-en-us/20170726161933/1434555371520.pdf|archive-date=23 February 2018|url-status=live}}</ref><ref>{{cite web|title=Touring USCGC Hamilton|url=https://c1.staticflickr.com/5/4202/34964127961_f743e6c6f6_o.jpg|website=www.flickr.com|access-date=22 February 2018|archive-url=https://web.archive.org/web/20180223051741/https://c1.staticflickr.com/5/4202/34964127961_f743e6c6f6_o.jpg|archive-date=23 February 2018|url-status=live}}</ref> The NSC is equipped with a state-of-the-art damage-control system that contributes to the ship's survivability.<ref>{{cite web|title=It's Time for a 'Sea-Control Frigate'|url=https://www.usni.org/magazines/proceedings/2014-04/its-time-sea-control-frigate|website=www.usni.org|date=April 2014|access-date=22 February 2018|quote=That's not to say NSCs aren't highly survivable ships; they have a state-of-the-art damage-control system|archive-url=https://web.archive.org/web/20180223051039/https://www.usni.org/magazines/proceedings/2014-04/its-time-sea-control-frigate|archive-date=23 February 2018|url-status=live}}</ref> The NSC is designed to U.S. Navy damage stability criteria and to level-1 survivability standards.<ref>{{cite web|title=SPS for Integrated Deepwater System|url=https://www.uscg.mil/history/docs/2000_USCG_systemperformancespecification.pdf|website=USCG.mil|publisher=US Coast Guard|access-date=10 February 2017|archive-url=https://web.archive.org/web/20170209121210/http://www.uscg.mil/history/docs/2000_USCG_systemperformancespecification.pdf|archive-date=9 February 2017|url-status=live}}</ref> Most of the NSC design is compatible with ABS naval vessel rules.<ref name=Ronald O'Rourke2008 /> The NSC has degaussing capability.<ref>{{cite web|title=THE NATIONAL FLEET PLAN|url=http://www.navy.mil/strategic/Fleet_Plan_Final.pdf|website=Navy.mil|publisher=Department of the Navy and the US Coast Guard|access-date=19 January 2017|archive-url=https://web.archive.org/web/20170131145333/http://www.navy.mil/strategic/Fleet_Plan_Final.pdf|archive-date=31 January 2017|url-status=live}}</ref> The cutters have a reduced [[radar cross-section]], which gives the cutters a higher degree of stealth over the past cutters.<ref>{{cite web|title=The National Security Cutter: Enduring Presence for Core Missions|url=http://www.sldinfo.com/wp-content/uploads/2011/09/National-Security-Cutter-Special-Report.pdf|website=www.sldinfo.com|access-date=21 May 2017|archive-url=https://web.archive.org/web/20170826032050/http://www.sldinfo.com/wp-content/uploads/2011/09/National-Security-Cutter-Special-Report.pdf|archive-date=26 August 2017|url-status=live}}</ref> The NSC uses a modified version of the same stealthy mast design as the [[Arleigh Burke-class destroyer|''Arleigh Burke''-class destroyer]]s.<ref>{{cite book|title=Seaforth World Naval Review 2013|date=October 31, 2015|publisher=Seaforth|isbn=978-1-84832-156-4|page=117}}</ref>▼
▲The cutter has a rear-launching ramp, capable of launching and retrieving the two aft-stored RHIBs while underway.<ref name=DeepwaterSRP>{{cite web |url=http://www.uscg.mil/deepwater/system/srp.htm |title=Short Range Prosecutor (SRP) |publisher=[[Integrated Deepwater System Program]] |access-date=2007-09-01 |archive-url=https://web.archive.org/web/20070503141238/http://www.uscg.mil/DEEPWATER/system/srp.htm |archive-date=2007-05-03 |url-status=live }}</ref><ref name=ZodiacSRP>{{cite web |url=http://www.zodiacmilpro.com/product/sbyt/info/770DJSRP.pdf |title=H770 DJ Short Range Prosecutor (technical specifications) |publisher=[[Zodiac Group]] |access-date=2007-09-01 |url-status=dead |archive-url=https://web.archive.org/web/20070928044751/http://www.zodiacmilpro.com/product/sbyt/info/770DJSRP.pdf |archive-date=2007-09-28 }}</ref> The NSC is built to about 90% military standards.<ref>{{cite web|title=COAST GUARD CUTTER PROCUREMENT|url=http://www.kmimediagroup.com/navy-air-sea-peo-forum/445-articles-npeo/coast-guard-cutter-procurement/6512-coast-guard-cutter-procurement|website=kmimediagroup.com|publisher=USCG|access-date=19 January 2017|archive-url=https://web.archive.org/web/20170131193127/http://www.kmimediagroup.com/navy-air-sea-peo-forum/445-articles-npeo/coast-guard-cutter-procurement/6512-coast-guard-cutter-procurement|archive-date=31 January 2017|url-status=usurped}}</ref> The NSC
The NSC is designed to U.S. Navy damage stability criteria and to level-1 survivability standards.<ref>{{cite web|title=SPS for Integrated Deepwater System|url=https://www.uscg.mil/history/docs/2000_USCG_systemperformancespecification.pdf|website=USCG.mil|publisher=US Coast Guard|access-date=10 February 2017|archive-url=https://web.archive.org/web/20170209121210/http://www.uscg.mil/history/docs/2000_USCG_systemperformancespecification.pdf|archive-date=9 February 2017|url-status=live}}</ref> Most of the NSC design is compatible with ABS naval vessel rules.<ref name=Ronald O'Rourke2008 /> The NSC has a [[degaussing]] capability.<ref>{{cite web|title=THE NATIONAL FLEET PLAN|url=http://www.navy.mil/strategic/Fleet_Plan_Final.pdf|website=Navy.mil|publisher=Department of the Navy and the US Coast Guard|access-date=19 January 2017|archive-url=https://web.archive.org/web/20170131145333/http://www.navy.mil/strategic/Fleet_Plan_Final.pdf|archive-date=31 January 2017|url-status=live}}</ref> The cutters have a reduced [[radar cross-section]], which gives the cutters a higher degree of stealth over the past cutters.<ref>{{cite web|title=The National Security Cutter: Enduring Presence for Core Missions|url=http://www.sldinfo.com/wp-content/uploads/2011/09/National-Security-Cutter-Special-Report.pdf|website=www.sldinfo.com|access-date=21 May 2017|archive-url=https://web.archive.org/web/20170826032050/http://www.sldinfo.com/wp-content/uploads/2011/09/National-Security-Cutter-Special-Report.pdf|archive-date=26 August 2017|url-status=live}}</ref> The NSC uses a modified version of the same stealthy mast design as the [[Arleigh Burke-class destroyer|''Arleigh Burke''-class destroyer]]s.<ref>{{cite book|title=Seaforth World Naval Review 2013|date=October 31, 2015|publisher=Seaforth|isbn=978-1-84832-156-4|page=117}}</ref>
===Combat suite===
Legend-class cutters have increased data exchange bandwidth.<ref name=GS-NSC>{{cite web|title=National Security Cutter (NSC/WMSL)|url=http://www.globalsecurity.org/security/library/report/2005/assetdescriptions.pdf|website=globalsecurity.org|access-date=10 August 2017|quote=The Maritime Security Capabilities allow cutter's weapons and command and control suite to be upgraded and hardened to better survive potential terrorist incidents and process increased data flow|archive-url=https://web.archive.org/web/20080316071519/http://www.globalsecurity.org/security/library/report/2005/assetdescriptions.pdf|archive-date=16 March 2008|url-status=live}}</ref> The [[Hensoldt]],
The Legend class is equipped with the same 220 rpm [[Bofors 57 mm L/70 naval artillery gun|Bofors 57 mm gun]] as mounted on the The cutters have space, weight, and power reserved for additional weapons and systems, which includes mine-warfare systems, non-line-of-sight missiles, and can have a [[SeaRAM]] replace the 20 mm Phalanx CIWS.<ref>{{cite web|title=NATIONAL SECURITY CUTTER Enhanced Oversight Needed to Ensure Problems Discovered during Testing and Operations Are Addressed|url=http://www.gao.gov/assets/680/674610.pdf|website=gao.gov|access-date=28 November 2016|archive-url=https://web.archive.org/web/20170127110217/http://gao.gov/assets/680/674610.pdf|archive-date=27 January 2017|url-status=live}}</ref><ref name=Ronald O'Rourke2008>{{cite web|title=Navy Littoral Combat Ship (LCS) Program: Background, Oversight Issues, and Options for Congress|url=https://digital.library.unt.edu/ark:/67531/metadc819055/m2/1/high_res_d/RL33741_2008Nov17.pdf|website=digital.library.unt.edu|access-date=25 August 2017|archive-url=https://web.archive.org/web/20170826032220/https://digital.library.unt.edu/ark:/67531/metadc819055/m2/1/high_res_d/RL33741_2008Nov17.pdf|archive-date=26 August 2017|url-status=live}}</ref> The NSC is capable of carrying a sonar ,that is reported as having mine and underwater swimmer location ability.<ref>{{cite web|title=Revised Deepwater Asset Descriptions|url=https://www.globalsecurity.org/security/library/report/2005/assetdescriptions.pdf|website=Globalsecurity.org|access-date=16 November 2017|archive-url=https://web.archive.org/web/20080316071519/http://www.globalsecurity.org/security/library/report/2005/assetdescriptions.pdf|archive-date=16 March 2008|url-status=live}}</ref> The NSC has an NBC detection and defense system to repel chemical, biological, or radiological attacks and has wash-down systems.<ref>{{cite web|title=Proceedings August 2011 Vol. 137/8/1,302 : Page 18|url=http://www.bluetoad.com/publication/index.php?i=76221&m=&l=&p=20&pre=&ver=swf|website=bluetoad.com|publisher=USCG|access-date=2017-02-12|archive-url=https://web.archive.org/web/20170213163922/http://www.bluetoad.com/publication/index.php?i=76221&m=&l=&p=20&pre=&ver=swf|archive-date=2017-02-13|url-status=live}}</ref> The cutter's weapons, command and control suite can be upgraded and is hardened to survive potential attacks and process increased data flow.<ref name=GS-NSC/> ==History==
[[File:Bertholf, Navy ship formation A 110617-G-RS249-003.jpg|thumb|''Bertholf'' underway in formation with the Navy during [[Exercise Northern Edge]], 2011]]
The first NSC, {{USCGC|Bertholf|WMSL-750|6}}, entered [[sea trial]]s in February 2008.<ref>{{cite web |url=https://www.flickr.com/photos/coastguardnews/2259987590/ |title=Bertholf Sea Trials on Flickr |archive-url=https://web.archive.org/web/20170213085318/https://www.flickr.com/photos/coastguardnews/2259987590/ |archive-date=2017-02-13 |work=[[Coast Guard News]] |date=February 11, 2008 |via=[[Flickr]]}}</ref> She has been in service since August 2008, and is based at [[Coast Guard Island]], [[Alameda, California]]. A second NSC, {{USCGC|Waesche|WMSL-751|2}},
In December 2009, a fleet mix analysis phase study called for nine NSCs ==Program issues==
WMSL-752, the ''Stratton'', suffered corrosion and leaks within weeks of commissioning in 2012. Earlier ships have not had that problem, so it may be the result of the [[cathodic protection]] system being hooked up in reverse. The first NSC, the ''Bertholf'', has had structural enhancements put into place to fix reports of fatigue life issues. The second NSC, ''Waesche'', had structural enhancement work completed in September 2018. The cutter ''Stratton'' and all subsequent NSCs have the enhancements already installed.<ref>{{cite web|title=Structural Enhancement Work To Begin On Second NSC, Conclude On First|url=http://www.dcms.uscg.mil/Our-Organization/Assistant-Commandant-for-Acquisitions-CG-9/Newsroom/NSC_091217/|website=www.dcms.uscg.mil|publisher=United States Coast Guard|access-date=23 February 2018|archive-url=https://web.archive.org/web/20171020220229/http://www.dcms.uscg.mil/Our-Organization/Assistant-Commandant-for-Acquisitions-CG-9/Newsroom/NSC_091217/|archive-date=20 October 2017|url-status=live}}</ref><ref>{{cite news |title=USCG Waesche structurally enhanced |url=https://www.shephardmedia.com/news/imps-news/structural-enhancement-work-concluded-second-nsc/ |access-date=6 September 2018 |archive-url=https://web.archive.org/web/20180905183150/https://www.shephardmedia.com/news/imps-news/structural-enhancement-work-concluded-second-nsc/ |archive-date=5 September 2018 |url-status=live }}</ref> The NSC program originally encountered problems meeting [[Tempest (codename)|TEMPEST]] requirements. After more recent testing, the first NSC, ''Bertholf'', passed all TEMPEST requirements.<ref>{{cite web|title=SHAPING A 21ST CENTURY USCG: THE KEY ROLE FOR MARITIME PATROL AIRCRAFT|url=http://www.sldinfo.com/shaping-a-21st-century-uscg-the-key-role-for-maritime-patrol-aircraft/|website=www.sldinfo.com|date=April 19, 2011|access-date=14 November 2017|quote=The first National Security Cutter, USCGC BERTHOLF, has passed all TEMPEST and information assurance requirements culminating in the authority to operate|archive-url=https://web.archive.org/web/20171115015146/http://www.sldinfo.com/shaping-a-21st-century-uscg-the-key-role-for-maritime-patrol-aircraft/|archive-date=15 November 2017|url-status=live}}</ref><ref>{{cite web|title=NSC gets TEMPEST certification, much needed modernization moves forward|url=http://coastguard.dodlive.mil/2009/06/nsc-gets-tempest-certification-cg-modernization-moves-forward/|website=coastguard.dodlive.mil|access-date=14 November 2017|archive-url=https://web.archive.org/web/20170214163106/http://coastguard.dodlive.mil/2009/06/nsc-gets-tempest-certification-cg-modernization-moves-forward/|archive-date=14 February 2017|url-status=live}}</ref>
The delays and problems have led to cost increases. The latest USCG estimate for eight ships is $5.474{{nbsp}}billion for an average cost of $684{{nbsp}}million;<ref name=CRS20121031 /> the first six hulls cost $3.902{{nbsp}}billion for an average of $650{{nbsp}}million/ship.<ref name=CRS20121031 /> The sixth NSC cost $735{{nbsp}}million in FY2012-13.<ref name=CRS20121031 /> In the FY18 Homeland Security Appropriations Bill released on the 21 November 2017, funding for the 10th NSC at a cost of $540{{nbsp}}million and long lead items for the 11th NSC was proposed.<ref>{{Cite web |url=https://www.appropriations.senate.gov/news/majority/fy2018-homeland-security-appropriations-bill-released |title=FY2018 Homeland Security Appropriations Bill Released | United States Senate Committee on Appropriations |access-date=2017-11-23 |archive-url=https://web.archive.org/web/20171122212532/https://www.appropriations.senate.gov/news/majority/fy2018-homeland-security-appropriations-bill-released |archive-date=2017-11-22 |url-status=live }}</ref> The FY2018 Omnibus Appropriations Bill includes $1.24{{nbsp}}billion in funding for the NSC program.<ref>https://www.cochran.senate.gov/public/index.cfm/2018/3/cochran-fy2018-omnibus-appropriations-bill-delivers-for-mississippi {{Dead link|date=March 2022}}</ref> The bill contains funding for the construction of the 10th National Security Cutter (NSC), long-lead-time materials for the 11th NSC, and construction of the 11th NSC.<ref name= "NSC11">{{cite web|url=https://www.appropriations.senate.gov/download/fy18-omni-homeland-sum|title=fy18-omni-homeland-sum|publisher=appropriations.senate.gov|access-date=31 March 2018|archive-url=https://web.archive.org/web/20180921145448/https://www.appropriations.senate.gov/download/fy18-omni-homeland-sum|archive-date=21 September 2018|url-status=live}}</ref> The Department of Homeland Security Appropriations Act, 2020 makes available $100.5{{nbsp}}million for long lead-time material for a 12th cutter.<ref>https://docs.house.gov/billsthisweek/20191216/BILLS-116HR1158SA-JES-DIVISION-D.pdf {{Bare URL PDF|date=March 2022}}</ref><ref>{{Cite web|url=https://www.wlox.com/2019/12/25/dept-defense-calls-navy-build-less-warships-says-report/|title = Dept. Of Defense calls on Navy to build less warships, according to report}}</ref>▼
▲The delays and problems
In January 2018, a whistleblower lawsuit against [[Lockheed Martin]] was unsealed, alleging that the company had sold defective communications systems to the NSC program. The ''[[qui tam]]'' lawsuit, filed by a former Lockheed employee, said Lockheed had concealed known problems with the radio-frequency distribution systems installed on nine NSCs, preventing them from simultaneously transmitting and receiving multiple radio signals. To settle the lawsuit, Lockheed agreed to pay the federal government $2.2{{nbsp}}million and to provide repairs valued at $2.2{{nbsp}}million to the faulty systems.<ref>{{cite press release |author=<!--Staff writer(s); no by-line.--> |title=Lockheed Martin Agrees To Pay $4.4 Million To Resolve Claims It Provided Faulty Equipment To The Coast Guard |url=https://www.justice.gov/usao-ndca/pr/lockheed-martin-agrees-pay-44-million-resolve-claims-it-provided-faulty-equipment-coast/ |location=San Francisco |publisher=US Department of Justice |agency=DoJ Northern District of California |date=January 19, 2018 |access-date=2018-05-08 |archive-url=https://web.archive.org/web/20180509151600/https://www.justice.gov/usao-ndca/pr/lockheed-martin-agrees-pay-44-million-resolve-claims-it-provided-faulty-equipment-coast |archive-date=May 9, 2018 |url-status=live }}</ref><ref>{{cite press release |author=<!--Staff writer(s); no by-line.--> |title=Lockheed whistleblower case brought by Phillips & Cohen involving National Security Cutters settles |url=https://www.phillipsandcohen.com/lockheed-settles-whistleblower-lawsuit-involving-coast-guard-cutters/ |publisher=Phillips & Cohen LLP |date=January 20, 2018 |access-date=2018-05-08 |archive-url=https://web.archive.org/web/20180509013555/https://www.phillipsandcohen.com/lockheed-settles-whistleblower-lawsuit-involving-coast-guard-cutters/ |archive-date=May 9, 2018 |url-status=live }}</ref>▼
The Department of Homeland Security Appropriations Act, 2020 makes available $100.5{{nbsp}}million for long lead-time material for a 12th cutter.<ref>{{Cite web |title=DIVISION - DEPARTMENT OF HOMELAND SECURITY. APPROPRIATIONS ACT, 2020 |url=https://docs.house.gov/billsthisweek/20191216/BILLS-116HR1158SA-JES-DIVISION-D.pdf |access-date=27 August 2024 |website=www.docs.house.gov}}</ref><ref>{{Cite web|url=https://www.wlox.com/2019/12/25/dept-defense-calls-navy-build-less-warships-says-report/|title = Dept. Of Defense calls on Navy to build less warships, according to report}}</ref> In March 2023, the Coast Guard's proposed FY2024 budget requested $17.1 million in procurement funding for the NSC program for post-delivery activities for the 10th and 11th NSCs, class-wide activities that included test and evaluation, and program close-out support, thereby suggesting it is not pursuing the option of a 12th cutter. <ref name= "2023_USCG_rpt2congress">{{cite web|url=https://news.usni.org/2023/03/31/report-to-congress-on-coast-guard-cutter-procurement-19|title=Report to Congress on Coast Guard Cutter Procurement|access-date=11 December 2023|archive-url=https://web.archive.org/web/20230409030017/https://news.usni.org/2023/03/31/report-to-congress-on-coast-guard-cutter-procurement-19|archive-date=9 April 2023|url-status=live}}</ref>
▲In January 2018, a whistleblower lawsuit against [[Lockheed Martin]] was unsealed, alleging that the company had sold defective communications systems to the NSC program. The ''[[qui tam]]'' lawsuit, filed by a former Lockheed employee, said Lockheed had concealed known problems with the radio-frequency distribution systems installed on nine NSCs, preventing them from simultaneously transmitting and receiving multiple radio signals. To settle the lawsuit, Lockheed agreed to pay the federal government $2.2{{nbsp}}million, and to provide repairs valued at $2.2{{nbsp}}million to the faulty systems.<ref>{{cite press release |author=<!--Staff writer(s); no by-line.--> |title=Lockheed Martin Agrees To Pay $4.4 Million To Resolve Claims It Provided Faulty Equipment To The Coast Guard |url=https://www.justice.gov/usao-ndca/pr/lockheed-martin-agrees-pay-44-million-resolve-claims-it-provided-faulty-equipment-coast/ |location=San Francisco |publisher=US Department of Justice |agency=DoJ Northern District of California |date=January 19, 2018 |access-date=2018-05-08 |archive-url=https://web.archive.org/web/20180509151600/https://www.justice.gov/usao-ndca/pr/lockheed-martin-agrees-pay-44-million-resolve-claims-it-provided-faulty-equipment-coast |archive-date=May 9, 2018 |url-status=live }}</ref><ref>{{cite press release |author=<!--Staff writer(s); no by-line.--> |title=Lockheed whistleblower case brought by Phillips & Cohen involving National Security Cutters settles |url=https://www.phillipsandcohen.com/lockheed-settles-whistleblower-lawsuit-involving-coast-guard-cutters/ |publisher=Phillips & Cohen LLP |date=January 20, 2018 |access-date=2018-05-08 |archive-url=https://web.archive.org/web/20180509013555/https://www.phillipsandcohen.com/lockheed-settles-whistleblower-lawsuit-involving-coast-guard-cutters/ |archive-date=May 9, 2018 |url-status=live }}</ref>
==Variants==
[[File:U.S. and Turkey In-Flight Engagements.jpg|thumb|USCGC ''Hamilton'' and [[TCG Turgutreis (F-241)|TCG ''Turgutries'']] in the [[Black Sea]],
[[Huntington Ingalls Industries]] has proposed two "patrol frigates" for Navy use, based on the NSC hull.
Patrol Frigate 4501 is very similar to the NSC, the main differences being a modified stern ramp<ref name=Mazumdar20120424>{{cite web | url=http://www.defensemedianetwork.com/stories/patrol-frigate-concepts-from-huntington-ingalls-industries-gain-traction-internationally/ | title=Patrol Frigate Concepts from Huntington Ingalls Industries Gain Traction Internationally | first=Mrityunjoy | last=Mazumdar | date=24 April 2012 | publisher=Defense Media Network | access-date=9 February 2013 | archive-url=https://web.archive.org/web/20130201141521/http://www.defensemedianetwork.com/stories/patrol-frigate-concepts-from-huntington-ingalls-industries-gain-traction-internationally/ | archive-date=1 February 2013 | url-status=live }}</ref> and a [[knuckle boom crane]] replacing the overhead crane.<ref name=JDW20120425>{{cite journal | first=Geoff | last=Fein | title=HII seeks exports for redesigned NSC | journal=Jane's Defence Weekly | page=8 | date=25 April 2012 | url=http://in.zinio.com/reader.jsp?issue=416219991&o=int&prev=sub&p=8 | access-date=9 February 2013 | archive-url=https://web.archive.org/web/20160303224754/http://in.zinio.com/reader.jsp?issue=416219991&o=int&prev=sub&p=8 | archive-date=3 March 2016 | url-status=live }}</ref> The crew is increased to 148
Patrol Frigate 4921 is a more radical redesign. It has a crew of 141.<ref name=Mazumdar20120424 /> Weapons and sensors are added at the expense of reducing range from {{convert|12000|to|8000|nmi|km}}.<ref name=JDW20120425 /> It adds a 12-cell [[RIM-162 ESSM#Mk 56|Mk 56 VLS]] launcher for [[RIM-162 ESSM|ESSM]] air-defense missiles, just behind the main gun, which is upgraded from 57 mm to a [[76mm Super Rapid naval cannon|76 mm Super Rapid]].<ref name=Mazumdar20120424 /> Two quad launchers for [[Harpoon (missile)|Harpoon]] anti-ship missiles and a [[Mark 32 Surface Vessel Torpedo Tubes|triple launcher]] for torpedoes are added to the stern.<ref name=JDW20120425 />
Brazil, Saudi Arabia, and Germany have
==Ship list==
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|July 23, 2021<ref>{{cite web|title=HII Authenticates Keel of National Security Cutter Calhoun|url=https://newsroom.huntingtoningalls.com/releases/huntington-ingalls-industries-authenticates-keel-ofnational-security-cutter-calhoun-wmsl-759}}</ref>
|April 3, 2022
|April 20, 2024
|Charleston, SC
|Active in Service
|-
| {{USCGC|Friedman|WMSL-760|2}}<ref>{{cite web |title= ALCOAST 263/20 - JUL 2020 ELEVENTH NATIONAL SECURITY CUTTER NAMED FOR ELIZEBETH SMITH FRIEDMAN |url= https://content.govdelivery.com/accounts/USDHSCG/bulletins/294691a |access-date=7 July 2020}}</ref>
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|Long Lead Time Materials (LLTM) funded as Option for 12th ship
|}
===Gallery===
<gallery mode="packed">
File:USCG long range interceptor aboard Bertholf.jpg|
File:USCGC Bertholf 57mm.JPG|The Mk 110 aboard the ''Bertholf'' firing during Combat System Ship Qualification Trials
File:Coast Guard Cutter Waesche; group sail to Hawaii for RIMPAC 140619-G-HN254-389.jpg|A Phalanx CIWS aboard the cutter ''Waesche'' during pre-fire checks
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