488310

Port and Harbor Operations

Transportation and Warehousing › Support Activities for Transportation › Support Activities for Water Transportation

SBA Size Standard

$47M average annual receipts

Revenue-Based Verify at SBA.gov →

NAICS Code Hierarchy

48

Sector

Transportation and Warehousing

488

Subsector

Support Activities for Transportation

4883

Industry Group

Support Activities for Water Transportation

488310

National Industry (This Code)

Port and Harbor Operations

Official NAICS Description

Source: U.S. Census Bureau 2022 NAICS

📘 Source: U.S. Census Bureau — 2022 NAICS Manual
This industry comprises establishments primarily engaged in operating ports, harbors (including docking and pier facilities), or canals.

✓ Small Business Eligibility at a Glance

Based on SBA Table of Small Business Size Standards (2024)

Size Standard

$47M average annual receipts

Measurement Period

3-year average

Standard Type

Revenue-Based

Applies To

All contracts under NAICS 488310

Set-Aside Programs

8(a), WOSB, HUBZone, SDVOSB

Certification Required

No (self-certify in SAM.gov)

Size standards are set by the SBA and reviewed periodically. Always verify at SBA.gov before bidding.

Cross-References

The following activities are classified elsewhere in the NAICS system:

Providing stevedoring and other marine cargo handling services (except warehousing)--are classified in Industry 488320, Marine Cargo Handling;
Providing navigational services to shipping--are classified in Industry 488330, Navigational Services to Shipping; and
Operating docking and/or storage facilities, known as marinas--are classified in Industry 713930, Marinas.

How to Use NAICS 488310 in SAM.gov

NAICS code 488310Port and Harbor Operations — is used in SAM.gov to identify businesses whose primary activity falls within this classification. When you add this code to your SAM.gov entity registration, contracting officers searching for vendors in the Support Activities for Water Transportation space will be able to find your business.

If this code represents your primary business activity, designate it as your primary NAICS code. Your primary NAICS code determines your size standard for any contract solicited under this code. With a size standard of $47M average annual receipts, your business must be at or below this threshold to qualify as a small business for set-aside contracts under NAICS 488310.

Log in Entity Registration Goods & Services Add NAICS Code Enter 488310 Save

Frequently Asked Questions

What is NAICS code 488310?

NAICS code 488310 is 'Port and Harbor Operations', classified under the Transportation and Warehousing sector (NAICS 48). This industry comprises establishments primarily engaged in operating ports, harbors (including docking and pier facilities), or canals. Cross-References. Establishments primarily engaged in--

What is the SBA small business size standard for NAICS code 488310?

The SBA defines a small business under NAICS code 488310 (Port and Harbor Operations) as one with $47M average annual receipts. This size standard determines eligibility for small business set-aside contracts, 8(a), HUBZone, WOSB, and SDVOSB programs in SAM.gov.

How do I register NAICS code 488310 in SAM.gov?

To register NAICS code 488310 in SAM.gov: (1) Log in at sam.gov, (2) Navigate to your Entity Registration, (3) Go to the Assertions section, (4) Add 488310 (Port and Harbor Operations) to your NAICS code list. You may designate one code as your Primary NAICS code.

Quick Actions

Related NAICS Codes

Other codes in Support Activities for Water Transportation

Related PSC Codes

PSC codes commonly used with this NAICS sector

Source: GSA PSC Manual April 2025

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