Top 100 Contractors in NAICS 4831: Deep Sea, Coastal, and Great Lakes Water Transportation, FY2023

Name: Top 100 Contractors in NAICS 4831: Deep Sea, Coastal, and Great Lakes Water Transportation, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 62% of FY2023 NAICS 4831 contract dollars

Contract obligations: $3,356,502,139 Net of deobligations, by contracts coded NAICS 4831 or a code under it
Contractors: 143 Parent companies with an obligation
Largest contractor: Patriot Contract Services, LLC $370 million, 10.5% 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	Patriot Contract Services, LLC Top agencies Navy (Department of the Navy) DOT (Department of Transportation) Army (Department of the Army)	$369,974,808	10.5%	Rank history: #3 in FY2021, #2 in FY2022, #1 in FY2024 and #1 in FY2025; up 1 since FY2022.
2	Maersk Inc. 3 awardees, including U.s. Marine Management, LLC, Maersk Line, Limited and Farrell Lines Incorporated Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$357,625,087	10.2%	Rank history: #1 in FY2021, #1 in FY2022, #30 in FY2024 and not on the FY2025 list; down 1 since FY2022.
3	Crowley Government Services Inc. 6 awardees, including Crowley Maritime Corporation and Crowley Puerto Rico Services, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$342,157,137	9.7%	Rank history: #2 in FY2021, #3 in FY2022, #2 in FY2024 and #2 in FY2025; unchanged since FY2022.
4	Ocean Shipholdings, Inc. 2 awardees, including Ocean Ships, Inc. Top agencies Navy (Department of the Navy)	$241,982,255	6.9%	Rank history: #7 in FY2021, #4 in FY2022, #4 in FY2024 and #5 in FY2025; unchanged since FY2022.
5	Chas Kurz & Co Inc 2 awardees, including Keystone Shipping Services, Inc. and Keystone Shipping Co Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) DOT (Department of Transportation)	$187,552,760	5.3%	Rank history: #11 in FY2021, #9 in FY2022, #21 in FY2024 and not on the FY2025 list; up 4 since FY2022.
6	Saltchuk Resources, Inc. 5 awardees, including Tote Services, LLC, Tote Maritime Alaska, LLC and Tote Maritime Puerto Rico, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) MDA (DOD Missile Defense Agency)	$165,703,162	4.7%	Rank history: #4 in FY2021, #5 in FY2022, #20 in FY2024 and #31 in FY2025; down 1 since FY2022.
7	American Roll-on Roll-Off Carrier LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$145,216,976	4.1%	Rank history: #8 in FY2021, #12 in FY2022, #3 in FY2024 and #6 in FY2025; up 5 since FY2022.
8	Matson Navigation Company Inc. 2 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$138,820,887	4.0%	Rank history: #6 in FY2021, #7 in FY2022, #11 in FY2024 and #14 in FY2025; down 1 since FY2022.
9	Dome Chartering & Trading Corp. Through Schuyler Line Navigation Company LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$119,085,464	3.4%	Rank history: #15 in FY2021, #10 in FY2022, #47 in FY2024 and not on the FY2025 list; up 1 since FY2022.
10	Hornbeck Offshore Services Inc. Through Hornbeck Offshore Operators LLC Top agencies Navy (Department of the Navy)	$113,526,566	3.2%	Rank history: #12 in FY2021, #13 in FY2022, #34 in FY2024 and not on the FY2025 list; up 3 since FY2022.
11	Seabulk International Inc. 2 awardees, including Waterman Transport Inc. and Fairwater Tanker Management LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$106,997,597	3.0%	Rank history: #51 in FY2021, #18 in FY2022, #18 in FY2024 and not on the FY2025 list; up 7 since FY2022.
12	Liberty Global Logistics LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$97,105,080	2.8%	Rank history: #5 in FY2021, #8 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
13	CMA CGM 2 awardees, including American President Lines, LLC and Ceva Freight LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) USAID (US Agency for International Development)	$96,179,606	2.7%	Rank history: #17 in FY2021, #6 in FY2022, #33 in FY2024 and not on the FY2025 list; down 7 since FY2022.
14	Sealift Holdings Inc. 2 awardees, including Sealift Inc. of Delaware Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$89,614,217	2.6%	Rank history: #10 in FY2021, #16 in FY2022, #10 in FY2024 and #20 in FY2025; up 2 since FY2022.
15	Overseas Shipholding Group Inc. 3 awardees, including Mykonos Tanker LLC, Overseas Sun Coast LLC and Santorini Tanker LLC Top agencies Navy (Department of the Navy)	$67,406,461	1.9%	Rank history: #25 in FY2021, #27 in FY2022, #35 in FY2024 and #29 in FY2025; up 12 since FY2022.
16	US Ocean LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$64,487,987	1.8%	Rank history: #20 in FY2021, #19 in FY2022, #16 in FY2024 and #13 in FY2025; up 3 since FY2022.
17	Pacific-Gulf Marine, Inc. Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$63,254,353	1.8%	Rank history: #21 in FY2021, #14 in FY2022, #19 in FY2024 and #24 in FY2025; down 3 since FY2022.
18	American Petroleum Tankers Parent LLC Through American Petroleum Tankers LLC Top agencies Navy (Department of the Navy)	$61,830,500	1.8%	Rank history: #16 in FY2021, #15 in FY2022, #27 in FY2024 and not on the FY2025 list; down 3 since FY2022.
19	Farrell Lines Incorporated Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$48,718,599	1.4%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2024 and #16 in FY2025; new.
20	Hapag-Lloyd USA LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) USAID (US Agency for International Development)	$42,481,260	1.2%	Rank history: #19 in FY2021, #20 in FY2022, #24 in FY2024 and #23 in FY2025; unchanged since FY2022.
21	Ocean Duchess, Inc. Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$39,236,878	1.1%	Rank history: #14 in FY2021, #24 in FY2022, #26 in FY2024 and #26 in FY2025; up 3 since FY2022.
22	Transoceanic Cable Ship Company LLC Top agencies Navy (Department of the Navy)	$38,331,810	1.1%	Rank history: #18 in FY2021, #21 in FY2022, #9 in FY2024 and not on the FY2025 list; down 1 since FY2022.
23	Alpha Marine Services LLC Top agencies Navy (Department of the Navy)	$35,696,097	1.0%	Rank history: #22 in FY2021, #25 in FY2022, #23 in FY2024 and #22 in FY2025; up 2 since FY2022.
24	Federated Maritime LLC Top agencies Navy (Department of the Navy)	$33,651,944	1.0%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2024 and #27 in FY2025; new.
25	Superior Maritime Services, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$29,086,367	0.8%	Rank history: #24 in FY2021, #28 in FY2022, #29 in FY2024 and #30 in FY2025; up 3 since FY2022.
26	Seaward Services, Inc. Top agencies Navy (Department of the Navy)	$25,497,774	0.7%	Rank history: #32 in FY2021, #22 in FY2022, #36 in FY2024 and #28 in FY2025; down 4 since FY2022.
27	Dampskibsselskabet Norden A / S Top agencies Navy (Department of the Navy)	$24,072,829	0.7%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2024 and not on the FY2025 list; new.
28	Approved Transportation & Warehousing, Ltd. Through Dewitt Companies Ltd., LLC Top agencies DHS (Department of Homeland Security)	$19,614,334	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
29	The Pasha Group Through Pasha Hawaii Holdings LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$19,353,273	0.6%	Rank history: #36 in FY2021, #31 in FY2022, #46 in FY2024 and not on the FY2025 list; up 2 since FY2022.
30	Offshore Service Vessels, L.L.C. Top agencies Navy (Department of the Navy)	$17,996,945	0.5%	Rank history: #23 in FY2021, #26 in FY2022, #37 in FY2024 and not on the FY2025 list; down 4 since FY2022.
31	Young Brothers LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOI (Department of the Interior)	$14,768,824	0.4%	Rank history: #43 in FY2021, #33 in FY2022, #43 in FY2024 and not on the FY2025 list; up 2 since FY2022.
32	Asahi Tanker Co.,Ltd. Top agencies Navy (Department of the Navy)	$11,750,907	0.3%	Rank history: #26 in FY2021, #48 in FY2022, #82 in FY2024 and #65 in FY2025; up 16 since FY2022.
33	Trailer Bridge Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$11,306,848	0.3%	Rank history: #49 in FY2021, #40 in FY2022, #44 in FY2024 and #46 in FY2025; up 7 since FY2022.
34	D'Amico Tankers Designated Activity Company Top agencies Navy (Department of the Navy)	$10,363,896	0.3%	Rank history: #58 in FY2021, #50 in FY2022 and not on the FY2024–FY2025 lists; up 16 since FY2022.
35	D'Amico Societa' DI Navigazione SPA Through D'amico Tankers Designated Activity Company Top agencies Navy (Department of the Navy)	$10,317,138	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
36	OMNI2MAX Inc. Top agencies Navy (Department of the Navy)	$8,565,318	0.2%	Rank history: #34 in FY2021, #30 in FY2022, #42 in FY2024 and #37 in FY2025; down 6 since FY2022.
37	Fishing Vessel North Wind, Inc. Top agencies Commerce (Department of Commerce)	$7,686,260	0.2%	Rank history: #38 in FY2021, #32 in FY2022, #40 in FY2024 and #42 in FY2025; down 5 since FY2022.
38	Tankerska Plovidba International Ltd. Top agencies Navy (Department of the Navy)	$5,840,980	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
39	Minerva Marine Inc. Top agencies Navy (Department of the Navy)	$5,100,000	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
40	Serena Shipping Ltd Top agencies Navy (Department of the Navy)	$4,333,184	0.1%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2024 and not on the FY2025 list; new.
41	Cetacean Marine Inc. Top agencies EPA (Environmental Protection Agency)	$4,151,257	0.1%	Rank history: #62 in FY2021, #41 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
42	Lynden Inc. 3 awardees, including Alaska Marine Lines Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$4,047,739	0.1%	Rank history: #45 in FY2021, #37 in FY2022, #54 in FY2024 and #49 in FY2025; down 5 since FY2022.
43	Seatac Marine Services, LLC Top agencies Navy (Department of the Navy)	$3,744,667	0.1%	Rank history: not on the FY2021 list, #54 in FY2022, not on the FY2024 list and #68 in FY2025; up 11 since FY2022.
44	Hafnia PTE. Ltd. Through Hafnia Pools Pte. Ltd. Top agencies Navy (Department of the Navy)	$3,442,122	0.1%	Rank history: not on the FY2021–FY2022 lists, #50 in FY2024 and not on the FY2025 list; new.
45	Reederei TMS "Atlantic Mate" GMBH & Co. KG Top agencies Navy (Department of the Navy)	$3,440,745	0.1%	Rank history: #72 in FY2021, #57 in FY2022, not on the FY2024 list and #66 in FY2025; up 12 since FY2022.
46	Pacific Maritime Group Inc. Top agencies Navy (Department of the Navy)	$3,377,670	0.1%	Rank history: #70 in FY2021, #49 in FY2022, #62 in FY2024 and #45 in FY2025; up 3 since FY2022.
47	Patriot Shipping LLC Top agencies Navy (Department of the Navy)	$3,112,715	0.1%	Rank history: #27 in FY2021, #17 in FY2022 and not on the FY2024–FY2025 lists; down 30 since FY2022.
48	Hawaii Resource Group LLC Top agencies DOI (Department of the Interior) Navy (Department of the Navy) Commerce (Department of Commerce)	$2,897,136	0.1%	Rank history: #54 in FY2021, #43 in FY2022, #56 in FY2024 and #57 in FY2025; down 5 since FY2022.
49	B & N Fisheries Company Top agencies Commerce (Department of Commerce)	$2,595,646	0.1%	Rank history: #88 in FY2021, #42 in FY2022, #61 in FY2024 and #54 in FY2025; down 7 since FY2022.
50	Liberty Eagle Corporation Top agencies USAID (US Agency for International Development)	$2,500,000	0.1%	Rank history: #41 in FY2021, not on the FY2022 list, not on the FY2024 list and #47 in FY2025; returned.
51	Great Eastern Group, Inc. Top agencies Navy (Department of the Navy)	$2,414,122	0.1%	Rank history: #30 in FY2021, #29 in FY2022 and not on the FY2024–FY2025 lists; down 22 since FY2022.
52	United States Seafoods, LLC Top agencies Commerce (Department of Commerce)	$2,245,483	0.1%	Rank history: #50 in FY2021, #46 in FY2022, #63 in FY2024 and #59 in FY2025; down 6 since FY2022.
53	Starfleet Marine Transportation, Inc. Top agencies Navy (Department of the Navy)	$1,600,525	<0.1%	Rank history: #56 in FY2021, #51 in FY2022, #66 in FY2024 and #64 in FY2025; down 2 since FY2022.
54	Stenoil KS Top agencies Navy (Department of the Navy)	$1,490,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2024 and not on the FY2025 list; new.
55	Beyel Brothers, Inc. Top agencies Navy (Department of the Navy)	$1,484,408	<0.1%	Rank history: not on the FY2021 list, #53 in FY2022, #80 in FY2024 and not on the FY2025 list; down 2 since FY2022.
56	Western Towboat Company Top agencies Navy (Department of the Navy) Commerce (Department of Commerce)	$1,222,200	<0.1%	Rank history: #68 in FY2021, not on the FY2022 list, #53 in FY2024 and #58 in FY2025; returned.
57	Navigazione Montanari SPA Top agencies Navy (Department of the Navy)	$1,214,436	<0.1%	Rank history: #78 in FY2021, #35 in FY2022 and not on the FY2024–FY2025 lists; down 22 since FY2022.
58	Aqua Gulf Transport, Inc. Top agencies USDA (Department of Agriculture)	$1,167,426	<0.1%	Rank history: not on the FY2021 list, #60 in FY2022, #73 in FY2024 and #91 in FY2025; up 2 since FY2022.
59	Transnow Inc Top agencies USDA (Department of Agriculture)	$1,072,949	<0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2024 and #52 in FY2025; new.
60	Mainsail - Oasis Joint Venture LLC Top agencies Navy (Department of the Navy)	$1,054,595	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #53 in FY2025; new.
61	Tankerska Next Generation International Ltd. Top agencies Navy (Department of the Navy)	$1,048,713	<0.1%	Rank history: #53 in FY2021, #34 in FY2022 and not on the FY2024–FY2025 lists; down 27 since FY2022.
62	National Shipping of America, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$1,042,101	<0.1%	Rank history: #86 in FY2021, #75 in FY2022, #76 in FY2024 and #44 in FY2025; up 13 since FY2022.
63	Synergy Partners LLC Top agencies Commerce (Department of Commerce)	$985,402	<0.1%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2024 and #51 in FY2025; new.
64	Vineta Asia PTE. Ltd. Through Macs Maritime Carrier Shipping Pte. Ltd. Top agencies USAID (US Agency for International Development)	$950,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
65	Northcliffe Ocean Shipping & Trading Company Inc. Top agencies USAF (Department of the Air Force)	$949,695	<0.1%	Rank history: #47 in FY2021, #45 in FY2022, #52 in FY2024 and #50 in FY2025; down 20 since FY2022.
66	Pasha Hawaii Holdings LLC Top agencies DOT (Department of Transportation)	$828,648	<0.1%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2024 and #25 in FY2025; new.
67	Chantal C, Inc. Top agencies Commerce (Department of Commerce)	$816,651	<0.1%	Rank history: #81 in FY2021, #74 in FY2022, not on the FY2024 list and #76 in FY2025; up 7 since FY2022.
68	Semper Offshore LLC Top agencies Commerce (Department of Commerce)	$795,781	<0.1%	Rank history: #79 in FY2021, #64 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
69	Curtin Maritime Corp Top agencies Navy (Department of the Navy)	$746,276	<0.1%	Rank history: #39 in FY2021, #58 in FY2022, #64 in FY2024 and #48 in FY2025; down 11 since FY2022.
70	DFF Inc. Top agencies USDA (Department of Agriculture)	$619,047	<0.1%	Rank history: not on the FY2021 list, #68 in FY2022, #87 in FY2024 and #93 in FY2025; down 2 since FY2022.
71	MS. Julie, Inc. Top agencies Commerce (Department of Commerce)	$608,813	<0.1%	Rank history: #66 in FY2021, #94 in FY2022, not on the FY2024 list and #75 in FY2025; up 23 since FY2022.
72	Transfair North America International Freight Services, LLC Top agencies USAID (US Agency for International Development)	$516,428	<0.1%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2024 and #87 in FY2025; new.
73	K.B. Fisheries, Inc. Top agencies Commerce (Department of Commerce)	$511,750	<0.1%	Rank history: not on the FY2021 list, #73 in FY2022, #100 in FY2024 and not on the FY2025 list; unchanged since FY2022.
74	American Marine Corporation Top agencies Navy (Department of the Navy)	$494,500	<0.1%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2024 and #56 in FY2025; new.
75	Rigid Security Group Inc Top agencies USSOCOM (United States Special Operations Command) Commerce (Department of Commerce)	$482,180	<0.1%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2024 and not on the FY2025 list; new.
76	Oasis Systems, LLC Top agencies Navy (Department of the Navy)	$447,008	<0.1%	Rank history: #60 in FY2021, #56 in FY2022 and not on the FY2024–FY2025 lists; down 20 since FY2022.
77	Odyssey Logistics & Technology Corp Through American FAST Freight, Inc. Top agencies USDA (Department of Agriculture)	$442,870	<0.1%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2024 and not on the FY2025 list; up 29 since FY2022.
78	BEI Tactical LLC Top agencies USSOCOM (United States Special Operations Command)	$421,659	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
79	Ex-1 Corporation Top agencies Commerce (Department of Commerce)	$402,830	<0.1%	Rank history: not on the FY2021 list, #71 in FY2022, #75 in FY2024 and #73 in FY2025; down 8 since FY2022.
80	DHX-Dependable Hawaiian Express Inc. 2 awardees Top agencies USDA (Department of Agriculture)	$318,506	<0.1%	Rank history: not on the FY2021 list, #76 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
81	Buckeye Scalloping Co LLC Top agencies Commerce (Department of Commerce)	$287,075	<0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2024 and #74 in FY2025; new.
82	KIM Kyle Top agencies DOI (Department of the Interior)	$256,198	<0.1%	Rank history: not on the FY2021 list, #86 in FY2022, #91 in FY2024 and not on the FY2025 list; up 4 since FY2022.
83	MSC Mediterranean Shipping Company Holding SA Through Mediterranean Shipping Company (USA) Inc. Top agencies USAID (US Agency for International Development)	$237,087	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
84	Centerline Logistics Corp Top agencies Navy (Department of the Navy)	$233,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
85	Island C Enterprises LLC Top agencies DOI (Department of the Interior) Commerce (Department of Commerce)	$174,770	<0.1%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2024 and #86 in FY2025; up 28 since FY2022.
86	Makai Inc. Top agencies DOI (Department of the Interior)	$169,225	<0.1%	Rank history: not on the FY2021 list, #91 in FY2022, #89 in FY2024 and not on the FY2025 list; up 5 since FY2022.
87	TW Logistics, LLC Top agencies USDA (Department of Agriculture)	$157,098	<0.1%	Rank history: not on the FY2021 list, #95 in FY2022, #81 in FY2024 and #70 in FY2025; up 8 since FY2022.
88	HOC Services, Inc. Top agencies DOI (Department of the Interior)	$113,697	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #90 in FY2025; new.
89	Progesco Consignaciones SL. Top agencies Navy (Department of the Navy)	$107,131	<0.1%	Rank history: #95 in FY2021, #89 in FY2022, not on the FY2024 list and #89 in FY2025; unchanged since FY2022.
90	Ships Services Inc. Top agencies Commerce (Department of Commerce)	$102,340	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
91	APL Ceva Government Logistics Top agencies USAID (US Agency for International Development)	$77,848	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	Sea Breeze Sportfishing LLC Top agencies Commerce (Department of Commerce)	$76,800	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
93	Daiko Sangyo K.K. Top agencies Navy (Department of the Navy)	$72,999	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #92 in FY2025; up 16 since FY2022.
94	Yoors Yachting Inc. Top agencies Commerce (Department of Commerce)	$70,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
95	Fish Downsea Charters LLC Top agencies Commerce (Department of Commerce)	$68,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
96	California Wetfish Producers Association Top agencies Commerce (Department of Commerce)	$65,156	<0.1%	Rank history: #97 in FY2021, #81 in FY2022, #93 in FY2024 and #84 in FY2025; down 15 since FY2022.
97	CAL Poly Humboldt Sponsored Programs Foundation Top agencies Commerce (Department of Commerce)	$64,488	<0.1%	Rank history: not on the FY2021 list, #99 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
98	UEI ZZA6LJUQABN6 Top agencies Smithsonian (Smithsonian Institution)	$55,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 9 since FY2022.
99	Scout Fisheries, Inc. Top agencies Commerce (Department of Commerce)	$52,600	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 3 since FY2022.
100	Alaskan Dream Ventures LLC Top agencies DOI (Department of the Interior)	$50,612	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 3 since FY2022.

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100 of 143 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 4831

Code	Net obligations	Largest contractor
48311 Deep Sea, Coastal, and Great Lakes Water Transportation	$3,356,502,139	Patriot Contract Services, 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 $3.51 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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 4831 contractors in FY2023?

1. Patriot Contract Services, LLC ($370M), 2. Maersk Inc. ($358M), 3. Crowley Government Services Inc. ($342M), 4. Ocean Shipholdings, Inc. ($242M), 5. Chas Kurz & Co Inc ($188M), 6. Saltchuk Resources, Inc. ($166M), 7. American Roll-on Roll-Off Carrier LLC ($145M), 8. Matson Navigation Company Inc. ($139M), 9. Dome Chartering & Trading Corp. ($119M), 10. Hornbeck Offshore Services Inc. ($114M).

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