Top 60 Contractors in NAICS 48833: Navigational Services to Shipping, Jul 2025–Jun 2026

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 85% of NAICS 48833 contract dollars from July 2025 through June 2026

Ranking facts

Contract obligations
$117,895,728 Net of deobligations, by contracts coded NAICS 48833 or a code under it
Contractors
64 Parent companies with an obligation
Largest contractor
Alpha Marine Services LLC $41.5 million, 33.4% of obligations
Data as of

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 60 rows as CSV

Full ranking

Rank Contractor Net obligations Share Trend
1 $41,488,466
Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2 $25,615,685
Rank history: #8 in FY2021, #6 in FY2022, not on the FY2023–FY2024 lists and #2 in FY2025; up 2 since Jul 2024–Jun 2025.
3
Pole Star Space Applications (USA) Inc.
$11,898,741
Rank history: not on the FY2021–FY2022 lists, #26 in FY2023, #3 in FY2024 and #4 in FY2025; down 1 since Jul 2024–Jun 2025.
4 $8,663,407
Rank history: #5 in FY2021, #4 in FY2022, #4 in FY2023, #4 in FY2024 and #5 in FY2025; up 1 since Jul 2024–Jun 2025.
5
Cabras Marine Corporation
$4,880,268
Rank history: #6 in FY2021, #5 in FY2022, #5 in FY2023, #8 in FY2024 and #7 in FY2025; up 1 since Jul 2024–Jun 2025.
6 $3,535,396
Rank history: #12 in FY2021, #8 in FY2022, #7 in FY2023, #7 in FY2024 and #6 in FY2025; up 2 since Jul 2024–Jun 2025.
7 $2,838,478
Rank history: not on the FY2021 list, #14 in FY2022, #15 in FY2023, #11 in FY2024 and #10 in FY2025; up 5 since Jul 2024–Jun 2025.
8 $2,288,595
Rank history: #16 in FY2021, #11 in FY2022, #12 in FY2023, #6 in FY2024 and #18 in FY2025; up 5 since Jul 2024–Jun 2025.
9
Matson Navigation Company Inc.
$2,130,413
Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; new, not ranked in Jul 2024–Jun 2025.
10
Dunlap Towing Company
$1,750,193
Rank history: #15 in FY2021, #16 in FY2022, #11 in FY2023, #14 in FY2024 and #17 in FY2025; up 5 since Jul 2024–Jun 2025.
11 $1,720,933
Rank history: #11 in FY2021, #12 in FY2022, #10 in FY2023, #13 in FY2024 and #15 in FY2025; up 5 since Jul 2024–Jun 2025.
12
Florida Offshore Inc.
$1,363,422
Rank history: #9 in FY2021, #10 in FY2022, #8 in FY2023, #10 in FY2024 and #9 in FY2025; down 2 since Jul 2024–Jun 2025.
13 $1,165,726
Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; new, not ranked in Jul 2024–Jun 2025.
14 $1,106,698
Rank history: not on the FY2021 list, #31 in FY2022, #13 in FY2023, #16 in FY2024 and #11 in FY2025; down 3 since Jul 2024–Jun 2025.
15
Brusco TUG & Barge Inc.
$1,053,980
Rank history: #21 in FY2021, #21 in FY2022, #19 in FY2023, #15 in FY2024 and #13 in FY2025; up 3 since Jul 2024–Jun 2025.
16 $954,000
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
17 $753,158
Rank history: #10 in FY2021, #13 in FY2022, #14 in FY2023, #12 in FY2024 and #14 in FY2025; down 3 since Jul 2024–Jun 2025.
18 $678,519
Rank history: #7 in FY2021, #7 in FY2022, #6 in FY2023, #5 in FY2024 and #8 in FY2025; down 11 since Jul 2024–Jun 2025.
19 $563,580
Rank history: #18 in FY2021, #18 in FY2022, #16 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
20 $525,700
Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; new, not ranked in Jul 2024–Jun 2025.
21 $445,000
Rank history: not on the FY2021–FY2022 lists, #29 in FY2023, #18 in FY2024 and #19 in FY2025; down 4 since Jul 2024–Jun 2025.
22 $350,417
Rank history: not on the FY2021–FY2022 lists, #23 in FY2023, #19 in FY2024 and #24 in FY2025; unchanged since Jul 2024–Jun 2025.
23 $316,763
Rank history: #27 in FY2021, #23 in FY2022, #25 in FY2023, #30 in FY2024 and #21 in FY2025; up 4 since Jul 2024–Jun 2025.
24 $252,624
Rank history: #26 in FY2021, #27 in FY2022, #24 in FY2023, #22 in FY2024 and #23 in FY2025; down 4 since Jul 2024–Jun 2025.
25 $185,344
Rank history: #28 in FY2021, #24 in FY2022, #28 in FY2023, #24 in FY2024 and #26 in FY2025; down 1 since Jul 2024–Jun 2025.
26 $159,000
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
27 $137,525
Rank history: #31 in FY2021, #29 in FY2022, #30 in FY2023, #27 in FY2024 and #28 in FY2025; down 2 since Jul 2024–Jun 2025.
28 $132,614
Rank history: not on the FY2021–FY2023 lists, #20 in FY2024 and #25 in FY2025; down 7 since Jul 2024–Jun 2025.
29 $130,000
Rank history: #30 in FY2021, #32 in FY2022, #56 in FY2023, not on the FY2024 list and #30 in FY2025; new, not ranked in Jul 2024–Jun 2025.
30 $122,213
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
31 $106,250
Rank history: not on the FY2021–FY2022 lists, #39 in FY2023, #28 in FY2024 and #31 in FY2025; down 2 since Jul 2024–Jun 2025.
32
Philadelphia Barge Company LLC
$100,000
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
33 $83,315
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
34 $80,572
Rank history: #40 in FY2021, not on the FY2022 list, #32 in FY2023, not on the FY2024 list and #36 in FY2025; new, not ranked in Jul 2024–Jun 2025.
35 $75,000
Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; new, not ranked in Jul 2024–Jun 2025.
36 $72,000
Rank history: #39 in FY2021, #35 in FY2022, #31 in FY2023, #31 in FY2024 and #37 in FY2025; down 1 since Jul 2024–Jun 2025.
37 $68,760
Rank history: #38 in FY2021, #34 in FY2022, #33 in FY2023, #32 in FY2024 and #33 in FY2025; down 5 since Jul 2024–Jun 2025.
38 $57,049
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
39 $49,440
Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; up 3 since Jul 2024–Jun 2025.
40 $48,618
Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; up 12 since Jul 2024–Jun 2025.
42 $35,232
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
43 $27,421
Rank history: #58 in FY2021, #47 in FY2022, #50 in FY2023, #49 in FY2024 and #52 in FY2025; new, not ranked in Jul 2024–Jun 2025.
44 $26,000
Rank history: #35 in FY2021, #36 in FY2022, not on the FY2023–FY2024 lists and #41 in FY2025; down 7 since Jul 2024–Jun 2025.
45 $23,450
Rank history: #33 in FY2021, not on the FY2022 list, #47 in FY2023, #38 in FY2024 and #48 in FY2025; down 1 since Jul 2024–Jun 2025.
46 $22,271
Rank history: not on the FY2021 list, #42 in FY2022, #53 in FY2023, not on the FY2024 list and #43 in FY2025; unchanged since Jul 2024–Jun 2025.
47 $20,640
Rank history: not on the FY2021–FY2024 lists and #49 in FY2025; new, not ranked in Jul 2024–Jun 2025.
48 $20,000
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
49 $19,128
Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; new, not ranked in Jul 2024–Jun 2025.
50 $13,600
Rank history: #43 in FY2021, #50 in FY2022, #42 in FY2023, #33 in FY2024 and #45 in FY2025; down 11 since Jul 2024–Jun 2025.
51 $12,140
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
52 $6,503
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
53 $6,000
Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; up 2 since Jul 2024–Jun 2025.
54 $5,210
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
55 $5,000
Rank history: #29 in FY2021, #43 in FY2022, #35 in FY2023, #43 in FY2024 and #56 in FY2025; new, not ranked in Jul 2024–Jun 2025.
56 $4,300
Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; new, not ranked in Jul 2024–Jun 2025.
57 $4,203
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
58
Wayfinder LLC
$3,750
Rank history: not on the FY2021–FY2024 lists and #59 in FY2025; new, not ranked in Jul 2024–Jun 2025.
59 $2,831
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
60 $330
Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; unchanged since Jul 2024–Jun 2025.
Show 35 more

60 of 64 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 48833

Code Net obligations Largest contractor
488330 Navigational Services to Shipping $117,895,728 Alpha Marine 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 $124 million 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.
  • Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
  • Rank changes compare with Jul 2024–Jun 2025. "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.
  • 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 48833 contractors in Jul 2025–Jun 2026?

1. Alpha Marine Services LLC ($41.5M), 2. Moran Towing Corporation ($25.6M), 3. Pole Star Space Applications (USA) Inc. ($11.9M), 4. P & R Water Taxi LLC ($8.66M), 5. Cabras Marine Corporation ($4.88M), 6. Thames Towboat Co Inc. ($3.54M), 7. Saltchuk Resources Inc. ($2.84M), 8. Mcallister Towing and Transportation Company, Inc. ($2.29M), 9. Matson Navigation Company Inc. ($2.13M), 10. Dunlap Towing Company ($1.75M).

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