48839 - Other Support Activities for Water Transportation

The maritime industry plays a vital role in global commerce, and behind the scenes, numerous specialized services ensure smooth and efficient water transportation operations. NAICS Code 48839 — Other Support Activities for Water Transportation — covers these critical yet often overlooked support services that help ports, ships, and cargo move seamlessly. Whether you’re a business owner, government contractor, or simply interested in the transportation sector, understanding this NAICS code is essential to navigating opportunities and compliance within the marine support industry.

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What is NAICS Code 48839?

NAICS Code 48839 encompasses establishments primarily engaged in providing various support activities related to water transportation. These services facilitate the operation, safety, and management of transportation over water but do not include the actual transportation of goods or passengers.

Key Services Included Under NAICS 48839:

• Marine Cargo Handling: Loading, unloading, and moving cargo in ports.
• Marine Pilotage Services: Guiding ships safely through navigational channels and harbors.
• Port and Harbor Operations: Managing dock facilities, towage, and other essential harbor services.

These support services are crucial for enabling efficient maritime logistics and safeguarding vessels as they traverse waterways.

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Sector and Industry Context

NAICS 48839 is part of the broader Transportation and Warehousing sector, specifically under:

NAICS Sector	Subsector	Industry Group	NAICS Code	Industry Title
48	Support Activities for Transportation	Support Activities for Water Transportation	48839	Other Support Activities for Water Transportation

This classification allows government agencies, businesses, and researchers to track economic activity related to nautical logistics support, a vibrant and essential niche within transportation.

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Typical Business Activities in NAICS Code 48839

Businesses under this code may engage in one or more of the following activities:

• Marine Cargo Handling Services

  • Dockside cargo loading/unloading
  • Container storage and movement
  • Bulk cargo operations (e.g., coal, grain)

• Marine Pilotage Services

  • Providing licensed pilots for ship navigation in harbors and canals
  • Coordinating vessel traffic control

• Port and Harbor Operations

  • Managing wharves and port infrastructure
  • Mooring and towing assistance
  • Maintenance of navigation aids and facilities

These services often target commercial shipping companies, port authorities, and government maritime agencies.

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Size Standards for NAICS Code 48839

To qualify as a small business under NAICS 48839 for government contracting and SBA programs, the key size standard is:

• Size Standard: Average annual receipts of $30 million or less (over the past 3 years)

Meeting this threshold allows businesses to participate in small business set-aside contracts and preferential procurement programs tied to water transportation support services.

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Examples of Businesses Under NAICS Code 48839

• A marine cargo stevedoring company managing bulk shipments at a major port.
• A licensed marine pilot association guiding vessels entering congested waterways.
• A port authority contracted to provide tugboat and dockside mooring services.
• Harbor management firms responsible for maintaining navigation aids and port facilities.

These enterprises play critical roles in supporting the broader maritime transportation network.

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NAICS Code 48839 at a Glance

Attribute	Details
NAICS Code	48839
Title	Other Support Activities for Water Transportation
Sector	Transportation and Warehousing
Description	Establishments providing support activities for water transportation such as marine cargo handling and pilotage. Does not include transport itself.
Typical Activities	Marine cargo handling, marine pilotage, port and harbor operations
Size Standard	$30 million average annual receipts
U.S. Census Sector	Support Activities for Water Transportation

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Frequently Asked Questions (FAQ) About NAICS Code 48839

Q1: Does NAICS 48839 include passenger ferry operations?

No. This code covers support activities facilitating water transportation but not the actual transportation of passengers or freight.

Q2: Can a shipping company fall under NAICS 48839?

Typically, no. Shipping companies that transport goods or passengers fall under different NAICS codes related to water transportation, such as 4831 (Deep Sea, Coastal, and Great Lakes Water Transportation).

Q3: What agencies use NAICS 48839 for contracting?

Federal, state, and local government entities involved in port security, infrastructure development, or maritime logistics may use this code to categorize contracts for support activities.

Q4: How can businesses leverage NAICS 48839 for government contracts?

By identifying under NAICS 48839 and meeting the size standard, businesses can apply for small business set-asides and participate in specialized contracting opportunities related to marine support services.

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Conclusion

NAICS Code 48839 plays a pivotal role in classifying and understanding the diverse businesses that support water transportation infrastructure and operations—excluding the carriers themselves. From marine pilotage to cargo handling and port management, these activities ensure maritime commerce flows safely and efficiently. If your business operates in these areas or you’re exploring opportunities within the transportation sector, mastering the details of NAICS 48839 is the first step toward success.

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Optimize your government contracting and maritime industry insights by staying updated on NAICS codes like 48839 — your gateway to specialized water transportation support services.