488330 — Navigational Services to Shipping
Description
This industry comprises establishments primarily engaged in providing navigational services to shipping. Marine salvage establishments are included in this industry (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Illustrative Examples
- Docking and undocking marine vessel services
- Piloting services, water transportation
- Marine vessel traffic reporting services
- Tugboat services, harbor operation
Exclusions & Cross-References
- Providing barge transportation and towing services on inland waters--are classified in U.S. Industry
- 483211, Inland Water Freight Transportation; and
- Providing coastal and/or Great Lakes barge transportation services--are classified in U.S. Industry 483113,
- Coastal and Great Lakes Freight Transportation.
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 4492 - Towing and Tugboat Services (via SIC1987:4492→NAICS1997:48833→2002:488330→2007:488330→2012:488330→2017:488330→2022:488330)
- SIC 4499 - Water Transportation Services, NEC (via SIC1987:4499→NAICS1997:48833→2002:488330→2007:488330→2012:488330→2017:488330→2022:488330)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC M2BZ — Husbanding Services—Other Port Services
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 488330 valid in 2022? ▾
Yes, 488330 is a valid 6-digit 2022 NAICS national industry code representing 'Navigational Services to Shipping' under Sector 48-49 in the official classification index.
What is the SBA size standard for NAICS code 488330? ▾
The Small Business Administration (SBA) has established a small business size standard of $47,000,000 for NAICS code 488330 (Navigational Services to Shipping), calculated based on receipts.
What is the legacy SIC equivalent for NAICS 488330? ▾
According to official Census Bureau concordance tables, NAICS code 488330 (Navigational Services to Shipping) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 4492 - Towing and Tugboat Services, 4499 - Water Transportation Services, NEC.
Related Pages & Tools
Further regulatory reference links for NAICS code 488330:
- Sector 48-49 Directory Hub — List of related industries in the Transportation and Warehousing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 488330 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Navigational Services to Shipping).
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.