Top 100 Contractors in NAICS 483: Water Transportation, FY2024

Name: Top 100 Contractors in NAICS 483: Water Transportation, FY2024
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 52% of FY2024 NAICS 483 contract dollars

Contract obligations: $3,472,182,777 Net of deobligations, by contracts coded NAICS 483 or a code under it
Contractors: 206 Parent companies with an obligation
Largest contractor: Patriot Contract Services, LLC $444 million, 11.9% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Patriot Contract Services, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) DOT (Department of Transportation)	$444,309,391	11.9%	Rank history: #3 in FY2021, #2 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	Crowley Government Services, Inc. 3 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$316,271,318	8.5%	Rank history: #2 in FY2021, #3 in FY2022, #3 in FY2023 and #2 in FY2025; up 1 since FY2023.
3	American Roll-On Roll-Off Carrier, LLC 2 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$196,441,435	5.2%	Rank history: #8 in FY2021, #12 in FY2022, #7 in FY2023 and #6 in FY2025; up 4 since FY2023.
4	Ocean Shipholdings, Inc. 2 awardees, including Ocean Ships, Inc. Top agencies Navy (Department of the Navy)	$174,912,293	4.7%	Rank history: #7 in FY2021, #4 in FY2022, #4 in FY2023 and #5 in FY2025; unchanged since FY2023.
5	Tote Services, LLC Top agencies Navy (Department of the Navy) DOT (Department of Transportation) MDA (DOD Missile Defense Agency)	$171,568,790	4.6%	Rank history: #51 in FY2021, #72 in FY2022, not on the FY2023 list and #4 in FY2025; returned.
6	Schuyler Line Navigation Company LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$156,407,644	4.2%	Rank history: #31 in FY2021, #58 in FY2022, not on the FY2023 list and #8 in FY2025; returned.
7	U.S. Marine Management LLC 2 awardees Top agencies Navy (Department of the Navy)	$141,666,749	3.8%	Rank history: #55 in FY2021, not on the FY2022–FY2023 lists and #3 in FY2025; returned.
8	Maersk Line, Limited Top agencies USAF (Department of the Air Force) USAID (US Agency for International Development)	$125,009,217	3.3%	Rank history: #44 in FY2021, not on the FY2022–FY2023 lists and #17 in FY2025; returned.
9	Transoceanic Cable Ship Company LLC Top agencies Navy (Department of the Navy)	$114,030,808	3.0%	Rank history: #18 in FY2021, #21 in FY2022, #22 in FY2023 and not on the FY2025 list; up 13 since FY2023.
10	Sealift Holdings Inc. 2 awardees, including Sealift Inc. of Delaware Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) USAID (US Agency for International Development)	$113,437,390	3.0%	Rank history: #10 in FY2021, #16 in FY2022, #14 in FY2023 and #20 in FY2025; up 4 since FY2023.
11	Matson Navigation Company Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DOI (Department of the Interior)	$104,958,533	2.8%	Rank history: #6 in FY2021, #7 in FY2022, #8 in FY2023 and #14 in FY2025; down 3 since FY2023.
12	Liberty Global Logistics LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$100,299,207	2.7%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
13	Hornbeck Offshore Operators LLC Top agencies Navy (Department of the Navy)	$97,814,579	2.6%	Rank history: #49 in FY2021, not on the FY2022–FY2023 lists and #10 in FY2025; returned.
14	Farrell Lines Incorporated Top agencies USAF (Department of the Air Force)	$92,262,614	2.5%	Rank history: not on the FY2021–FY2022 lists, #19 in FY2023 and #16 in FY2025; up 5 since FY2023.
15	American President Lines, LLC Top agencies USAF (Department of the Air Force) USAID (US Agency for International Development)	$85,755,736	2.3%	Rank history: not on the FY2021–FY2023 lists and #12 in FY2025; new.
16	US Ocean LLC Top agencies USAF (Department of the Air Force)	$75,627,413	2.0%	Rank history: #20 in FY2021, #19 in FY2022, #16 in FY2023 and #13 in FY2025; unchanged since FY2023.
17	Keystone Shipping Services, Inc. Top agencies Navy (Department of the Navy) DOT (Department of Transportation)	$73,392,795	2.0%	Rank history: #93 in FY2021, #73 in FY2022, not on the FY2023 list and #9 in FY2025; returned.
18	Seabulk International Inc. 2 awardees, including Waterman Transport Inc. and Fairwater Tanker Management LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$65,600,038	1.8%	Rank history: #54 in FY2021, #18 in FY2022, #11 in FY2023 and not on the FY2025 list; down 7 since FY2023.
19	Pacific-Gulf Marine, Inc. Top agencies Navy (Department of the Navy)	$53,534,503	1.4%	Rank history: #21 in FY2021, #14 in FY2022, #17 in FY2023 and #25 in FY2025; down 2 since FY2023.
20	Saltchuk Resources, Inc. 7 awardees, including Tote Services, LLC, Tote Maritime Alaska, LLC and Young Brothers LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$49,360,762	1.3%	Rank history: #4 in FY2021, #5 in FY2022, #6 in FY2023 and #32 in FY2025; down 14 since FY2023.
21	Chas Kurz & Co Inc 2 awardees, including Keystone Shipping Services, Inc. and Keystone Shipping Co Top agencies Navy (Department of the Navy) DOT (Department of Transportation)	$45,613,627	1.2%	Rank history: #11 in FY2021, #9 in FY2022, #5 in FY2023 and not on the FY2025 list; down 16 since FY2023.
22	TSP Tankers Holdings LLC Top agencies Navy (Department of the Navy)	$44,047,609	1.2%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2025; new.
23	Alpha Marine Services LLC Top agencies Navy (Department of the Navy)	$43,754,704	1.2%	Rank history: #22 in FY2021, #26 in FY2022, #23 in FY2023 and #22 in FY2025; unchanged since FY2023.
24	Hapag-Lloyd USA LLC 2 awardees Top agencies USAF (Department of the Air Force) USAID (US Agency for International Development)	$43,675,766	1.2%	Rank history: #19 in FY2021, #20 in FY2022, #20 in FY2023 and #24 in FY2025; down 4 since FY2023.
25	American Petroleum Tankers LLC Top agencies Navy (Department of the Navy)	$35,170,000	0.9%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2025; new.
26	Ocean Duchess, Inc. Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$33,107,423	0.9%	Rank history: #14 in FY2021, #24 in FY2022, #21 in FY2023 and #27 in FY2025; down 5 since FY2023.
27	American Petroleum Tankers Parent LLC Through American Petroleum Tankers LLC Top agencies Navy (Department of the Navy)	$31,739,000	0.8%	Rank history: #16 in FY2021, #15 in FY2022, #18 in FY2023 and not on the FY2025 list; down 9 since FY2023.
28	Crowley-Stena Marine Solutions LLC Top agencies Navy (Department of the Navy)	$30,888,763	0.8%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; new.
29	Superior Maritime Services, Inc. Top agencies USAF (Department of the Air Force)	$30,773,819	0.8%	Rank history: #26 in FY2021, #29 in FY2022, #25 in FY2023 and #31 in FY2025; down 4 since FY2023.
30	Vane Line Bunkering, LLC Top agencies DLA (Defense Logistics Agency)	$25,128,530	0.7%	Rank history: #23 in FY2021, #25 in FY2022, #27 in FY2023 and #23 in FY2025; down 3 since FY2023.
31	Maersk Inc. 2 awardees, including Maersk Line, Limited Top agencies USAF (Department of the Air Force)	$25,012,344	0.7%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2023 and not on the FY2025 list; down 29 since FY2023.
32	Pasha Hawaii Holdings LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$24,606,394	0.7%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023 and #26 in FY2025; up 39 since FY2023.
33	Federated Maritime LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$24,561,800	0.7%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2023 and #28 in FY2025; down 9 since FY2023.
34	CMA CGM Through American President Lines, LLC Top agencies USAF (Department of the Air Force)	$22,392,161	0.6%	Rank history: #17 in FY2021, #6 in FY2022, #13 in FY2023 and not on the FY2025 list; down 21 since FY2023.
35	Hornbeck Offshore Services Inc. Through Hornbeck Offshore Operators LLC Top agencies Navy (Department of the Navy)	$21,972,708	0.6%	Rank history: #12 in FY2021, #13 in FY2022, #10 in FY2023 and not on the FY2025 list; down 25 since FY2023.
36	Overseas Shipholding Group Inc. 2 awardees, including Mykonos Tanker LLC and Overseas Sun Coast LLC Top agencies Navy (Department of the Navy)	$19,709,944	0.5%	Rank history: #27 in FY2021, #28 in FY2022, #15 in FY2023 and #30 in FY2025; down 21 since FY2023.
37	Seaward Services, Inc. Top agencies Navy (Department of the Navy)	$18,713,297	0.5%	Rank history: #34 in FY2021, #22 in FY2022, #26 in FY2023 and #29 in FY2025; down 11 since FY2023.
38	Offshore Service Vessels, L.L.C. 2 awardees Top agencies Navy (Department of the Navy)	$15,984,984	0.4%	Rank history: #25 in FY2021, #27 in FY2022, #31 in FY2023 and not on the FY2025 list; down 7 since FY2023.
39	Liberty Glory Corporation Top agencies USAID (US Agency for International Development)	$11,500,000	0.3%	Rank history: not on the FY2021 list, #39 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
40	Jar Assets LLC Top agencies DLA (Defense Logistics Agency)	$10,887,500	0.3%	Rank history: #24 in FY2021, #37 in FY2022, #34 in FY2023 and not on the FY2025 list; down 6 since FY2023.
41	Waterman Transport Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$10,207,767	0.3%	Rank history: not on the FY2021–FY2023 lists and #11 in FY2025; new.
42	Fishing Vessel North Wind, Inc. Top agencies Commerce (Department of Commerce)	$10,071,142	0.3%	Rank history: #40 in FY2021, #33 in FY2022, #40 in FY2023 and #45 in FY2025; down 2 since FY2023.
43	Tote Maritime Puerto Rico, LLC Top agencies USAF (Department of the Air Force)	$9,895,462	0.3%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2025; new.
44	Omni2Max, Inc. 2 awardees Top agencies Navy (Department of the Navy)	$9,357,772	0.3%	Rank history: #36 in FY2021, #31 in FY2022, #39 in FY2023 and #39 in FY2025; down 5 since FY2023.
45	Young Brothers LLC Top agencies USAF (Department of the Air Force) DOI (Department of the Interior)	$8,371,573	0.2%	Rank history: #45 in FY2021, #34 in FY2022, #33 in FY2023 and not on the FY2025 list; down 12 since FY2023.
46	Trailer Bridge Inc. Top agencies USAF (Department of the Air Force)	$8,197,808	0.2%	Rank history: #52 in FY2021, #42 in FY2022, #36 in FY2023 and #49 in FY2025; down 10 since FY2023.
47	Central Marine Logistics Inc. Top agencies Navy (Department of the Navy) DOT (Department of Transportation)	$8,074,316	0.2%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; new.
48	The Pasha Group Through Pasha Hawaii Holdings LLC Top agencies Navy (Department of the Navy)	$7,067,491	0.2%	Rank history: #38 in FY2021, #32 in FY2022, #30 in FY2023 and not on the FY2025 list; down 18 since FY2023.
49	Dome Chartering & Trading Corp. Through Schuyler Line Navigation Company LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$6,144,542	0.2%	Rank history: #15 in FY2021, #10 in FY2022, #9 in FY2023 and not on the FY2025 list; down 40 since FY2023.
50	Fairwater Tanker Management LLC Top agencies Navy (Department of the Navy)	$5,787,000	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
51	Cardinal Point Captains Inc Top agencies EPA (Environmental Protection Agency)	$5,631,055	0.2%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2025; up 50 since FY2023.
52	Hafnia PTE. Ltd. 2 awardees, including Hafnia Pools Pte. Ltd. Top agencies Navy (Department of the Navy)	$5,400,760	0.1%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and not on the FY2025 list; down 5 since FY2023.
53	Transfair North America International Freight Services, LLC Top agencies USAID (US Agency for International Development)	$5,127,864	0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and #97 in FY2025; up 26 since FY2023.
54	Northcliffe Ocean Shipping & Trading Company Inc. Top agencies USAF (Department of the Air Force)	$4,736,953	0.1%	Rank history: #50 in FY2021, #48 in FY2022, #70 in FY2023 and #54 in FY2025; up 16 since FY2023.
55	Western Towboat Company Top agencies Navy (Department of the Navy)	$4,042,400	0.1%	Rank history: #74 in FY2021, not on the FY2022 list, #61 in FY2023 and #63 in FY2025; up 6 since FY2023.
56	Lynden Inc. 2 awardees, including Alaska Marine Lines Inc. Top agencies USAF (Department of the Air Force) DOI (Department of the Interior)	$3,976,350	0.1%	Rank history: #46 in FY2021, #38 in FY2022, #45 in FY2023 and #53 in FY2025; down 11 since FY2023.
57	Trafigura Maritime Logistics PTE. Ltd. Top agencies Navy (Department of the Navy)	$3,948,888	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
58	Shaver Transportation Co Top agencies Army (Department of the Army)	$3,486,178	0.1%	Rank history: not on the FY2021 list, #47 in FY2022, #55 in FY2023 and #40 in FY2025; down 3 since FY2023.
59	Hawaii Resource Group LLC Top agencies DOI (Department of the Interior) Navy (Department of the Navy)	$3,150,911	0.1%	Rank history: #57 in FY2021, #45 in FY2022, #51 in FY2023 and #61 in FY2025; down 8 since FY2023.
60	Eclipse Group, Inc. Top agencies Commerce (Department of Commerce)	$2,908,111	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
61	American Marine Corporation Top agencies Navy (Department of the Navy)	$2,736,700	0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and #60 in FY2025; up 20 since FY2023.
62	The Jankovich Company, LLC Top agencies Navy (Department of the Navy)	$2,712,000	0.1%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2025; new.
63	Transnow Inc Top agencies USDA (Department of Agriculture)	$2,557,145	0.1%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023 and #56 in FY2025; up 1 since FY2023.
64	Mediterranean Shipping Company (USA) Inc. Top agencies USAID (US Agency for International Development)	$2,459,555	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
65	B & N Fisheries Company Top agencies Commerce (Department of Commerce)	$2,421,000	0.1%	Rank history: #98 in FY2021, #44 in FY2022, #52 in FY2023 and #58 in FY2025; down 13 since FY2023.
66	Pacific Maritime Group Inc. Top agencies Navy (Department of the Navy)	$2,134,869	0.1%	Rank history: #76 in FY2021, #52 in FY2022, #49 in FY2023 and #48 in FY2025; down 17 since FY2023.
67	United States Seafoods, LLC Top agencies Commerce (Department of Commerce)	$2,060,000	0.1%	Rank history: #53 in FY2021, #49 in FY2022, #56 in FY2023 and #64 in FY2025; down 11 since FY2023.
68	C & M Industries, Inc. Top agencies Navy (Department of the Navy)	$2,049,024	0.1%	Rank history: #78 in FY2021, #64 in FY2022, #57 in FY2023 and #62 in FY2025; down 11 since FY2023.
69	Brice Construction and Design LLC Top agencies Army (Department of the Army)	$2,046,095	0.1%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2023 and not on the FY2025 list; down 37 since FY2023.
70	Curtin Maritime Corp Top agencies Navy (Department of the Navy)	$1,999,260	0.1%	Rank history: #41 in FY2021, #63 in FY2022, #75 in FY2023 and #52 in FY2025; up 5 since FY2023.
71	Dampskibsselskabet Norden A / S Top agencies Navy (Department of the Navy)	$1,673,066	<0.1%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023 and not on the FY2025 list; down 43 since FY2023.
72	Starfleet Marine Transportation, Inc. Top agencies Navy (Department of the Navy)	$1,573,434	<0.1%	Rank history: #59 in FY2021, #54 in FY2022, #58 in FY2023 and #69 in FY2025; down 14 since FY2023.
73	Stenoil KS Top agencies Navy (Department of the Navy)	$1,485,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023 and not on the FY2025 list; down 14 since FY2023.
74	Synergy Partners LLC Top agencies Commerce (Department of Commerce)	$1,481,079	<0.1%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023 and #55 in FY2025; down 6 since FY2023.
75	Serena Shipping Ltd Top agencies Navy (Department of the Navy)	$1,445,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2023 and not on the FY2025 list; down 32 since FY2023.
76	Next Generation Logistics, LLC Top agencies Army (Department of the Army)	$1,386,870	<0.1%	Rank history: #62 in FY2021, #59 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
77	M N M Boats, Inc. Top agencies Commerce (Department of Commerce)	$1,381,875	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
78	Handytankers K/S Top agencies Navy (Department of the Navy)	$1,339,550	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
79	Smith Towing Company, Inc. Top agencies Army (Department of the Army)	$1,230,019	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
80	Offshore Aviation LLC 2 awardees Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force)	$1,213,910	<0.1%	Rank history: not on the FY2021 list, #96 in FY2022, not on the FY2023 list and #42 in FY2025; returned.
81	Aqua Gulf Transport, Inc. Top agencies USDA (Department of Agriculture)	$1,041,226	<0.1%	Rank history: not on the FY2021 list, #66 in FY2022, #63 in FY2023 and not on the FY2025 list; down 18 since FY2023.
82	F / V Last Straw Ltd. Top agencies Commerce (Department of Commerce)	$1,035,259	<0.1%	Rank history: not on the FY2021 list, #77 in FY2022, not on the FY2023 list and #77 in FY2025; returned.
83	Ceiba Adventures Inc. 2 awardees Top agencies DOI (Department of the Interior)	$1,031,044	<0.1%	Rank history: #69 in FY2021, #62 in FY2022, #74 in FY2023 and #82 in FY2025; down 9 since FY2023.
84	Ex-1 Corporation Top agencies Commerce (Department of Commerce)	$966,290	<0.1%	Rank history: not on the FY2021 list, #80 in FY2022, #86 in FY2023 and #78 in FY2025; up 2 since FY2023.
85	National Shipping of America, LLC Top agencies USAF (Department of the Air Force)	$944,898	<0.1%	Rank history: #95 in FY2021, #85 in FY2022, #67 in FY2023 and #47 in FY2025; down 18 since FY2023.
86	American Fast Freight Inc. Top agencies USDA (Department of Agriculture)	$815,518	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
87	Patriotic Excursions LLC Top agencies Navy (Department of the Navy)	$767,438	<0.1%	Rank history: not on the FY2021 list, #95 in FY2022, #78 in FY2023 and #85 in FY2025; down 9 since FY2023.
88	Support Vessels of Alaska, Inc. Top agencies Commerce (Department of Commerce)	$753,140	<0.1%	Rank history: #75 in FY2021, #82 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
89	Dependable Highway Express Inc. Through Dhx-Dependable Hawaiian Express Inc. Top agencies USDA (Department of Agriculture)	$711,675	<0.1%	Rank history: not on the FY2021–FY2023 lists and #83 in FY2025; new.
90	Beyel Brothers, Inc. Top agencies Navy (Department of the Navy)	$692,994	<0.1%	Rank history: not on the FY2021 list, #56 in FY2022, #60 in FY2023 and not on the FY2025 list; down 30 since FY2023.
91	TW Logistics, LLC Top agencies USDA (Department of Agriculture)	$620,852	<0.1%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023 and #75 in FY2025; up 4 since FY2023.
92	Asahi Tanker Co.,Ltd. Top agencies Navy (Department of the Navy)	$616,000	<0.1%	Rank history: #28 in FY2021, #51 in FY2022, #35 in FY2023 and #70 in FY2025; down 57 since FY2023.
93	Rigid Security Group Inc Top agencies USSOCOM (United States Special Operations Command)	$554,375	<0.1%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and not on the FY2025 list; down 11 since FY2023.
94	University of Georgia Research Foundation, Inc. Top agencies Commerce (Department of Commerce)	$474,140	<0.1%	Rank history: not on the FY2021–FY2023 lists and #74 in FY2025; new.
95	D'amico Tankers Designated Activity Company Top agencies Navy (Department of the Navy)	$447,886	<0.1%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2025; new.
96	KVG Philippines FZE Inc. Top agencies Army (Department of the Army)	$441,725	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
97	DFF Inc. Top agencies USDA (Department of Agriculture)	$421,939	<0.1%	Rank history: not on the FY2021 list, #76 in FY2022, #76 in FY2023 and not on the FY2025 list; down 21 since FY2023.
98	Kokusai Express Co., Ltd. Top agencies Navy (Department of the Navy)	$348,439	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
99	Makai Inc. Top agencies Commerce (Department of Commerce) DOI (Department of the Interior)	$328,375	<0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and not on the FY2025 list; down 5 since FY2023.
100	Norport, Inc. Top agencies Commerce (Department of Commerce)	$310,500	<0.1%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2025; new.

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100 of 206 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 483

Code	Net obligations	Largest contractor
4831 Deep Sea, Coastal, and Great Lakes Water Transportation	$3,419,306,975	Patriot Contract Services, LLC
4832 Inland Water Transportation	$52,875,802	Vane Line Bunkering, LLC

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 $3.74 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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 NAICS 483 contractors in FY2024?

1. Patriot Contract Services, LLC ($444M), 2. Crowley Government Services, Inc. ($316M), 3. American Roll-On Roll-Off Carrier, LLC ($196M), 4. Ocean Shipholdings, Inc. ($175M), 5. Tote Services, LLC ($172M), 6. Schuyler Line Navigation Company LLC ($156M), 7. U.S. Marine Management LLC ($142M), 8. Maersk Line, Limited ($125M), 9. Transoceanic Cable Ship Company LLC ($114M), 10. Sealift Holdings Inc. ($113M).

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