Top 100 Contractors in PSC 19: Ships, Small Craft, Pontoon, Docks, FY2021

Name: Top 100 Contractors in PSC 19: Ships, Small Craft, Pontoon, Docks, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 88% of FY2021 PSC 19 contract dollars

Contract obligations: $18,649,918,997 Net of deobligations, by contracts coded PSC 19 or a code under it
Contractors: 283 Parent companies with an obligation
Largest contractor: General Dynamics Corporation $9.7 billion, 48.4% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	General Dynamics Corporation 6 awardees, including Electric Boat Corporation, Bath Iron Works Corporation and National Steel and Shipbuilding Company Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$9,695,975,113	48.4%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2020.
2	Huntington Ingalls Industries, Inc. 3 awardees, including Huntington Ingalls Inc. and HII Fleet Support Group LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$5,372,483,083	26.8%	Rank history: #2 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since FY2020.
3	Saltchuk Resources, Inc. Through Tote Services, LLC Top agencies DOT (Department of Transportation)	$586,299,168	2.9%	Rank history: #6 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; up 306 since FY2020.
4	Fincantieri Marine Systems North America Inc. Through Marinette Marine Corporation Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$562,504,364	2.8%	Rank history: #5 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
5	Eastern Shipbuilding Group, Inc. Top agencies DHS (Department of Homeland Security)	$389,749,812	1.9%	Rank history: #10 in FY2022, #4 in FY2023, #14 in FY2024 and not on the FY2025 list; up 1 since FY2020.
6	Austal Limited Through Austal Usa, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$268,391,662	1.3%	Rank history: #3 in FY2022, #5 in FY2023, #10 in FY2024 and not on the FY2025 list; up 4 since FY2020.
7	Bollinger Shipyards Inc Through Bollinger Shipyards Lockport, L.L.C. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$244,075,155	1.2%	Rank history: #8 in FY2022, #8 in FY2023, #26 in FY2024 and not on the FY2025 list; unchanged since FY2020.
8	ST Engineering Halter Marine and Offshore Inc. 2 awardees, including Bollinger Mississippi Shipbuilding, LLC and Bollinger Mississippi Repair, LLC Top agencies Navy (Department of the Navy) Commerce (Department of Commerce) DHS (Department of Homeland Security)	$202,457,058	1.0%	Rank history: #4 in FY2022, #11 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
9	Thoma-Sea Marine Constructors, L.L.C. Top agencies Navy (Department of the Navy) Army (Department of the Army) Commerce (Department of Commerce)	$200,396,092	1.0%	Rank history: #52 in FY2022, #6 in FY2023, #35 in FY2024 and #33 in FY2025; up 50 since FY2020.
10	Huntington Ingalls Inc. 2 awardees Top agencies Navy (Department of the Navy)	$147,581,539	0.7%	Rank history: #26 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
11	Lockheed Martin Corporation 3 awardees Top agencies Navy (Department of the Navy)	$133,329,945	0.7%	Rank history: #7 in FY2022, #10 in FY2023, #12 in FY2024 and #8 in FY2025; down 8 since FY2020.
12	Safe Boats International LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DOJ (Department of Justice)	$101,258,778	0.5%	Rank history: #13 in FY2022 and not on the FY2023–FY2025 lists; up 25 since FY2020.
13	Birdon America Inc. Top agencies Army (Department of the Army)	$66,723,278	0.3%	Rank history: #12 in FY2022, #20 in FY2023, #28 in FY2024 and #12 in FY2025; up 1 since FY2020.
14	Swiftships, LLC Top agencies Navy (Department of the Navy)	$62,121,482	0.3%	Rank history: #16 in FY2022, not on the FY2023 list, #94 in FY2024 and not on the FY2025 list; up 1 since FY2020.
15	Teledyne Technologies Incorporated 2 awardees, including Teledyne Brown Engineering, Inc. and Teledyne Instruments, Inc. Top agencies Navy (Department of the Navy) Commerce (Department of Commerce)	$61,827,904	0.3%	Rank history: #21 in FY2022, #22 in FY2023, #17 in FY2024 and #32 in FY2025; up 3 since FY2020.
16	Marine Group Boat Works, LLC Top agencies Navy (Department of the Navy)	$48,756,676	0.2%	Rank history: not on the FY2022 list, #40 in FY2023, #93 in FY2024 and #82 in FY2025; up 32 since FY2020.
17	BAE Systems PLC 4 awardees, including BAE Systems Maritime Solutions Jacksonville LLC, BAE Systems Maritime Solutions San Diego Inc. and BAE Systems Maritime Solutions Norfolk Inc. Top agencies Navy (Department of the Navy)	$42,455,372	0.2%	Rank history: #11 in FY2022, #15 in FY2023, #15 in FY2024 and #19 in FY2025; down 4 since FY2020.
18	Thomas Scientific LLC 3 awardees, including Vigor Works LLC and Vigor Kvichak LLC Top agencies Army (Department of the Army) USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$39,634,504	0.2%	Rank history: #38 in FY2022, #9 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
19	Gravois Aluminum Boats LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$38,434,164	0.2%	Rank history: #15 in FY2022, #23 in FY2023, #23 in FY2024 and #21 in FY2025; up 1 since FY2020.
20	United States Marine Inc. Top agencies USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$26,645,004	0.1%	Rank history: #17 in FY2022, #17 in FY2023, #22 in FY2024 and #22 in FY2025; up 2 since FY2020.
21	Defense Systems and Solutions Top agencies Army (Department of the Army)	$23,849,038	0.1%	Rank history: #59 in FY2022, #85 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
22	QED Systems, Inc. Top agencies Navy (Department of the Navy)	$23,094,339	0.1%	Rank history: #28 in FY2022, #33 in FY2023, #69 in FY2024 and not on the FY2025 list; up 6 since FY2020.
23	RCT Systems, Inc. Top agencies Navy (Department of the Navy)	$15,923,511	0.1%	Rank history: not on the FY2022–FY2023 lists, #39 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
24	Textron Inc. Through Textron Systems Corp Top agencies Navy (Department of the Navy)	$15,805,877	0.1%	Rank history: #18 in FY2022, #7 in FY2023, #9 in FY2024 and #4 in FY2025; down 19 since FY2020.
25	Gulf Island Fabrication, Inc. Through Gulf Island Shipyards LLC Top agencies Navy (Department of the Navy)	$15,413,379	0.1%	Rank history: not on the FY2022–FY2025 lists; down 17 since FY2020.
26	Silver Ships, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$15,175,045	0.1%	Rank history: #32 in FY2022, #16 in FY2023, #25 in FY2024 and #26 in FY2025; down 2 since FY2020.
27	Walashek Industrial & Marine Inc. Top agencies Navy (Department of the Navy)	$15,089,769	0.1%	Rank history: #64 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
28	Pacific Shipyards International, LLC Top agencies Navy (Department of the Navy)	$15,073,138	0.1%	Rank history: #14 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
29	Poseidon,Llc Top agencies Army (Department of the Army)	$10,420,110	0.1%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; up 48 since FY2020.
30	Ribcraft Usa, LLC Top agencies Navy (Department of the Navy)	$9,720,141	<0.1%	Rank history: #19 in FY2022, #26 in FY2023, #56 in FY2024 and #29 in FY2025; down 5 since FY2020.
31	Conrad Industries, Inc. Through Conrad Shipyard, L.l.c Top agencies Army (Department of the Army)	$9,066,722	<0.1%	Rank history: #9 in FY2022, #19 in FY2023, #18 in FY2024 and #16 in FY2025; up 69 since FY2020.
32	Sterling Shipyard LP Top agencies Army (Department of the Army)	$8,980,400	<0.1%	Rank history: not on the FY2022 list, #13 in FY2023, #42 in FY2024 and #94 in FY2025; up 53 since FY2020.
33	L3Harris Technologies, Inc. 2 awardees, including L3 Technologies, Inc. Top agencies Navy (Department of the Navy)	$8,415,331	<0.1%	Rank history: #24 in FY2022, #35 in FY2023, #65 in FY2024 and #67 in FY2025; down 12 since FY2020.
34	Calista Corp 2 awardees, including Yulista Support Services LLC and Y-Tech Services, Inc. Top agencies Navy (Department of the Navy)	$8,176,849	<0.1%	Rank history: #31 in FY2022, #48 in FY2023, #82 in FY2024 and not on the FY2025 list; up 6 since FY2020.
35	Snow & Company, Inc. Top agencies Navy (Department of the Navy)	$8,167,604	<0.1%	Rank history: #30 in FY2022, #30 in FY2023, #62 in FY2024 and #50 in FY2025; up 9 since FY2020.
36	Metal Craft Marine Incorporated Through Metalcraft Marine US, Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) USDA (Department of Agriculture)	$7,484,831	<0.1%	Rank history: #23 in FY2022, #36 in FY2023, #43 in FY2024 and not on the FY2025 list; up 9 since FY2020.
37	Colonna's Ship Yard, Incorporated Top agencies Commerce (Department of Commerce)	$7,166,981	<0.1%	Rank history: #36 in FY2022, #61 in FY2023, not on the FY2024 list and #54 in FY2025; up 56 since FY2020.
38	Modutech Marine, Inc. Top agencies Navy (Department of the Navy)	$6,597,548	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 7 since FY2020.
39	Alaska Native Government Services LLC Through Reconcraft, LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$6,213,673	<0.1%	Rank history: not on the FY2022 list, #12 in FY2023, #48 in FY2024 and not on the FY2025 list; down 9 since FY2020.
40	Austal Usa, LLC Top agencies Navy (Department of the Navy)	$5,814,368	<0.1%	Rank history: #60 in FY2022 and not on the FY2023–FY2025 lists; down 13 since FY2020.
41	Philly Shipyard Inc. Through Hanwha Philly Shipyard, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$5,606,806	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 23 since FY2020.
42	Oceaneering International Inc. Top agencies Navy (Department of the Navy)	$5,536,554	<0.1%	Rank history: #53 in FY2022, #55 in FY2023 and not on the FY2024–FY2025 lists; up 27 since FY2020.
43	Bath Iron Works Corporation Top agencies Navy (Department of the Navy)	$5,253,653	<0.1%	Rank history: #65 in FY2022, not on the FY2023 list, #3 in FY2024 and #9 in FY2025; down 34 since FY2020.
44	Confluence Corp Top agencies Commerce (Department of Commerce)	$4,984,000	<0.1%	Rank history: #43 in FY2022, #59 in FY2023, #66 in FY2024 and not on the FY2025 list; down 5 since FY2020.
45	HII Fleet Support Group LLC Top agencies Navy (Department of the Navy)	$4,464,531	<0.1%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
46	BMT Group Ltd Through BMT Designers & Planners, Inc. Top agencies Navy (Department of the Navy)	$4,299,932	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 36 since FY2020.
47	Heavy Engineering Industries and Shipbuilding Company K.s.c. Top agencies Army (Department of the Army)	$4,030,812	<0.1%	Rank history: #87 in FY2022 and not on the FY2023–FY2025 lists; down 14 since FY2020.
48	Bay Ship & Yacht Co Top agencies Commerce (Department of Commerce)	$4,000,211	<0.1%	Rank history: not on the FY2022–FY2023 lists, #63 in FY2024 and not on the FY2025 list; up 33 since FY2020.
49	Zodiac of North America Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$3,948,252	<0.1%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; up 65 since FY2020.
50	The Boeing Company 2 awardees, including Liquid Robotics, Inc. Top agencies Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$3,558,710	<0.1%	Rank history: not on the FY2022 list, #100 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
51	BAE Systems Land & Armaments L.P. 2 awardees, including BAE Systems Maritime Solutions Jacksonville LLC and BAE Systems Maritime Solutions San Diego Inc. Top agencies Navy (Department of the Navy)	$3,551,033	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
52	Lake Assault Boats, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) EPA (Environmental Protection Agency)	$3,502,633	<0.1%	Rank history: #45 in FY2022, #62 in FY2023, #90 in FY2024 and not on the FY2025 list; down 23 since FY2020.
53	Wing Inflatables Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DOI (Department of the Interior)	$3,463,722	<0.1%	Rank history: #77 in FY2022, #38 in FY2023 and not on the FY2024–FY2025 lists; up 26 since FY2020.
54	United States Seafoods, LLC Top agencies Commerce (Department of Commerce)	$2,927,531	<0.1%	Rank history: #58 in FY2022, #60 in FY2023, #78 in FY2024 and #69 in FY2025; up 72 since FY2020.
55	Rite-Solutions, Inc. Top agencies Navy (Department of the Navy)	$2,828,931	<0.1%	Rank history: not on the FY2022–FY2024 lists and #49 in FY2025; up 17 since FY2020.
56	Ceco Environmental Corp Through Peerless MFG Co Top agencies Navy (Department of the Navy)	$2,517,888	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
57	Mills Marine & Ship Repair LLC Top agencies Navy (Department of the Navy)	$2,453,507	<0.1%	Rank history: #49 in FY2022, #50 in FY2023, #54 in FY2024 and #36 in FY2025; new, not ranked in FY2020.
58	G I Industrial-Marine, LLC Top agencies Commerce (Department of Commerce)	$2,308,865	<0.1%	Rank history: #54 in FY2022, not on the FY2023 list, #80 in FY2024 and #78 in FY2025; down 9 since FY2020.
59	Amp United LLC Top agencies Navy (Department of the Navy)	$2,300,300	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
60	Exail Inc. Top agencies Commerce (Department of Commerce)	$2,132,500	<0.1%	Rank history: #83 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
61	Leidos Holdings, Inc. Through Gibbs & Cox, Inc. Top agencies Navy (Department of the Navy)	$2,059,214	<0.1%	Rank history: #37 in FY2022, #21 in FY2023, #19 in FY2024 and #23 in FY2025; new, not ranked in FY2020.
62	Life Support International Inc. Top agencies Navy (Department of the Navy)	$1,945,583	<0.1%	Rank history: #68 in FY2022 and not on the FY2023–FY2025 lists; up 198 since FY2020.
63	Board of Governers State University System of Florida Through Florida State University Top agencies Navy (Department of the Navy)	$1,929,618	<0.1%	Rank history: #39 in FY2022, #67 in FY2023, #53 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
64	Reuben Johnson & Son, Inc. Through Fraser Shipyards LLC Top agencies Navy (Department of the Navy)	$1,917,790	<0.1%	Rank history: #63 in FY2022, #46 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
65	Ice Floe, LLC Top agencies Navy (Department of the Navy)	$1,804,833	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy)	$1,799,200	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
67	Dock High, LLC Top agencies Navy (Department of the Navy)	$1,752,345	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
68	Serco North America (Holdings) Inc Through Serco Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$1,644,879	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 13 since FY2020.
69	Marquette Transportation Company Holdings, LLC Through Marquette Transportation Company, LLC Top agencies Army (Department of the Army)	$1,586,880	<0.1%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
70	Hawaii Resource Group LLC Top agencies Commerce (Department of Commerce)	$1,522,664	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 14 since FY2020.
71	William E. Munson Company Top agencies DOI (Department of the Interior) USDA (Department of Agriculture) Army (Department of the Army)	$1,458,538	<0.1%	Rank history: #46 in FY2022, #49 in FY2023, #70 in FY2024 and #44 in FY2025; down 13 since FY2020.
72	Cecos Group, LLC Top agencies DHS (Department of Homeland Security)	$1,416,009	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
73	HII Unmanned Systems, Inc. Top agencies Navy (Department of the Navy)	$1,415,338	<0.1%	Rank history: #69 in FY2022, #28 in FY2023, #20 in FY2024 and not on the FY2025 list; down 2 since FY2020.
74	Bowhead Marine Support Services, LLC Top agencies DHS (Department of Homeland Security)	$1,374,356	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 12 since FY2020.
75	American Maritime Holdings, LLC Through Tecnico Corporation Top agencies Navy (Department of the Navy)	$1,330,281	<0.1%	Rank history: #86 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
76	Workskiff, Inc. Top agencies Army (Department of the Army) Commerce (Department of Commerce)	$1,321,943	<0.1%	Rank history: not on the FY2022 list, #54 in FY2023 and not on the FY2024–FY2025 lists; up 33 since FY2020.
77	Vesteraalen L.l.c Top agencies Commerce (Department of Commerce)	$1,225,260	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 61 since FY2020.
78	Worthington Products, LLC Top agencies Army (Department of the Army)	$1,079,954	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 125 since FY2020.
79	Vigor Works LLC Top agencies USSOCOM (United States Special Operations Command)	$1,035,793	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 44 since FY2020.
80	TAI Engineers, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$920,646	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 94 since FY2020.
81	Teledyne Brown Engineering, Inc. Top agencies Navy (Department of the Navy)	$918,344	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
82	MS. Julie, Inc. Top agencies Commerce (Department of Commerce)	$783,000	<0.1%	Rank history: not on the FY2022 list, #83 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
83	Bellingham Marine Industries Acquisition Inc. Through Bellingham Marine Industries, Inc. Top agencies Navy (Department of the Navy)	$733,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 52 since FY2020.
84	Inventech Marine Solutions LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$716,679	<0.1%	Rank history: #61 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
85	All American Marine Inc. Top agencies Commerce (Department of Commerce)	$643,892	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 23 since FY2020.
86	Thomas Jenkins Top agencies Navy (Department of the Navy)	$642,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
87	JT Marine Inc. Top agencies DHS (Department of Homeland Security)	$600,000	<0.1%	Rank history: #71 in FY2022 and not on the FY2023–FY2025 lists; down 51 since FY2020.
88	Newton Boats, Inc. Top agencies Commerce (Department of Commerce)	$599,727	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
89	The Phoenician, LLC Top agencies DHS (Department of Homeland Security)	$595,832	<0.1%	Rank history: #96 in FY2022, #95 in FY2023 and not on the FY2024–FY2025 lists; up 59 since FY2020.
90	Wartsila Defense Inc. Through Defense Maritime Solutions, Inc. Top agencies Commerce (Department of Commerce)	$591,003	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	J & N Metal Products, LLC Top agencies Navy (Department of the Navy)	$560,331	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
92	Hanko Boats, LLC Top agencies DOI (Department of the Interior) NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$504,100	<0.1%	Rank history: not on the FY2022 list, #90 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
93	Gibbs & Cox, Inc. Top agencies Navy (Department of the Navy)	$500,000	<0.1%	Rank history: #20 in FY2022, #58 in FY2023, #96 in FY2024 and not on the FY2025 list; down 55 since FY2020.
94	Chantal C, Inc. Top agencies Commerce (Department of Commerce)	$443,400	<0.1%	Rank history: not on the FY2022 list, #76 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
95	Curtiss-Wright Corporation Through Curtiss-Wright Electro-Mechanical Corporation Top agencies Navy (Department of the Navy)	$425,295	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
96	Ohana Environmental and Construction LLC Top agencies DOI (Department of the Interior)	$398,696	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	The Great Lakes Towing Company LLC Top agencies Army (Department of the Army)	$387,002	<0.1%	Rank history: #55 in FY2022, not on the FY2023 list, #88 in FY2024 and #76 in FY2025; up 4 since FY2020.
98	D.r. Radon Boatbuilding, Inc. Top agencies Commerce (Department of Commerce)	$374,908	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 31 since FY2020.
99	Jet Dock Systems Inc. Top agencies Navy (Department of the Navy)	$373,852	<0.1%	Rank history: not on the FY2022 list, #57 in FY2023, not on the FY2024 list and #64 in FY2025; new, not ranked in FY2020.
100	Robishaw Engineering Inc. Top agencies Navy (Department of the Navy)	$370,500	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

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100 of 283 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC 19

Code	Net obligations	Largest contractor
1905 Combat Ships and Landing Vessels	$16,568,561,308	General Dynamics Corporation
1925 Special Service Vessels	$774,450,720	Saltchuk Resources, Inc.
1940 Small Craft	$359,471,650	Safe Boats International LLC
1990 Miscellaneous Vessels	$265,345,645	ST Engineering Halter Marine and Offshore Inc.
1910 Transport Vessels, Passenger and Troop	$214,445,778	Thoma-Sea Marine Constructors, L.L.C.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $20 billion obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 PSC 19 contractors in FY2021?

1. General Dynamics Corporation ($9.7B), 2. Huntington Ingalls Industries, Inc. ($5.37B), 3. Saltchuk Resources, Inc. ($586M), 4. Fincantieri Marine Systems North America Inc. ($563M), 5. Eastern Shipbuilding Group, Inc. ($390M), 6. Austal Limited ($268M), 7. Bollinger Shipyards Inc ($244M), 8. ST Engineering Halter Marine and Offshore Inc. ($202M), 9. Thoma-Sea Marine Constructors, L.L.C. ($200M), 10. Huntington Ingalls Inc. ($148M).

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