Top 56 Contractors in NAICS 48833: Navigational Services to Shipping, Aug 2025–Jul 2026
Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe
The latest 12 months. See the newest fiscal year's list: Top Contractors in NAICS 48833: Navigational Services to Shipping, FY2025.
The top 10 won 87% of NAICS 48833 contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $138,429,124 Net of deobligations, by contracts coded NAICS 48833 or a code under it
- Contractors
- 61 Parent companies with an obligation
- Largest contractor
- Alpha Marine Services LLC $46.6 million, 32.2% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 56 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 | $46,578,236 | |||
| 2 |
Pole Star Space Applications (USA) Inc.
Top agencies
|
$28,693,905 | ||
| 3 | $25,374,804 | |||
| 4 |
P & R Water Taxi LLC
Top agencies
|
$7,064,730 | ||
| 5 |
Cabras Marine Corporation
Top agencies
|
$4,880,268 | ||
| 6 |
Thames Towboat Co Inc.
Top agencies
|
$3,535,396 | ||
| 7 |
Young Brothers LLC
|
$3,130,334 | ||
| 8 | $2,522,611 | |||
| 9 |
Matson Navigation Company Inc.
Top agencies
|
$2,130,413 | ||
| 10 | $1,863,884 | |||
| 11 |
Dunlap Towing Company
Top agencies
|
$1,750,193 | ||
| 12 |
Virginia Pilot Association
Top agencies
|
$1,692,646 | ||
| 13 | $1,353,500 | |||
| 14 |
Florida Offshore Inc.
Top agencies
|
$1,283,336 | ||
| 15 |
Ryuseki Corporation
Top agencies
|
$1,183,312 | ||
| 16 | $644,633 | |||
| 17 |
The J Group, LLC
Top agencies
|
$628,047 | ||
| 18 | $563,580 | |||
| 19 |
Brusco TUG & Barge Inc.
Top agencies
|
$510,380 | ||
| 20 |
En Bisso Canaveral Inc.
Top agencies
|
$445,000 | ||
| 21 |
Lakeworks LLC
Top agencies
|
$309,600 | ||
| 22 | $308,819 | |||
| 23 | $252,624 | |||
| 24 |
Tokyo Kisen Co., Ltd.
Top agencies
|
$183,322 | ||
| 25 |
Tradewinds Towing LLC
Top agencies
|
$159,000 | ||
| 26 | $138,395 | |||
| 27 | $132,614 | |||
| 28 | $130,000 | |||
| 29 | $122,213 | |||
| 30 | $113,615 | |||
| 31 |
Seasmoke Marine, LLC
Top agencies
|
$106,250 | ||
| 32 |
Philadelphia Barge Company LLC
Top agencies
|
$100,000 | ||
| 33 | $83,315 | |||
| 34 |
Pal Inc.
Top agencies
|
$75,000 | ||
| 35 |
Touchard JR Bruno Louis
Top agencies
|
$72,000 | ||
| 36 |
Damon R Williams
Top agencies
|
$68,760 | ||
| 37 |
Wynema Pilot Service Corp
Top agencies
|
$57,049 | ||
| 38 | $49,440 | |||
| 39 | $48,618 | |||
| 40 | $35,232 | |||
| 41 | $27,421 | |||
| 42 |
ST Johns Bar Pilots Inc.
Top agencies
|
$26,000 | ||
| 43 |
Cross Link, Inc.
Top agencies
|
$25,500 | ||
| 44 | $23,450 | |||
| 45 | $20,640 | |||
| 46 |
KB John LLC
Top agencies
|
$20,000 | ||
| 47 | $19,128 | |||
| 48 | $15,000 | |||
| 49 | $13,600 | |||
| 50 |
Gelasakis Societe Anonyme
Top agencies
|
$12,140 | ||
| 51 | $6,503 | |||
| 52 |
Alaska Chadux Network
Top agencies
|
$6,000 | ||
| 53 |
Citibank, N.A.
Top agencies
|
$4,203 | ||
| 54 |
Wayfinder LLC
Top agencies
|
$3,750 | ||
| 55 |
County of Broward
Top agencies
|
$2,831 | ||
| 56 |
Progesco Consignaciones SL.
Top agencies
|
$330 |
Show 31 more
56 of 61 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 | $138,429,124 | 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 $145 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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 Aug 2024–Jul 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 Aug 2025–Jul 2026?
1. Alpha Marine Services LLC ($46.6M), 2. Pole Star Space Applications (USA) Inc. ($28.7M), 3. Moran Towing Corporation ($25.4M), 4. P & R Water Taxi LLC ($7.06M), 5. Cabras Marine Corporation ($4.88M), 6. Thames Towboat Co Inc. ($3.54M), 7. Young Brothers LLC ($3.13M), 8. Marine Exchange of Alaska, Inc. ($2.52M), 9. Matson Navigation Company Inc. ($2.13M), 10. Mcallister Towing and Transportation Company, Inc. ($1.86M).
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