SICCODE.comSIC LookupE Transportation & Public Utilities44 Water Transportation449 Services Incidental to Water TransportationSIC 4491
SIC Code 4491 – Marine Cargo Handling
Official 4-digit SIC code Source: OSHA SIC Manual Updated Nov 13, 2026
At a glance
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Which businesses belong in SIC 4491?
Usually classified in SIC 4491
- Docks, including buildings and facilities: operation and maintenance
- Loading vessels
- Marine cargo handling
- Piers, including buildings and facilities: operation and maintenance
- Ship hold cleaning
Usually classified elsewhere
- Operators of Nonresidential Buildings 6512 · Operators of Nonresidential Buildings
Official definition for SIC 4491 - Marine Cargo Handling
Establishments primarily engaged in activities directly related to marine cargo handling from the time cargo, for or from a vessel, arrives at shipside, dock, pier, terminal, staging area, or in-transit area until cargo loading or unloading operations are completed. Included in this industry are establishments primarily engaged in the transfer of cargo between ships and barges, trucks, trains, pipelines, and wharfs. Cargo handling operations carried on by transportation companies and separately reported are classified here. This industry includes the operation and maintenance of piers, docks, and associated buildings and facilities.
Source: OSHA SIC Manual
Companies in SIC 4491 - Marine Cargo Handling
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Preview · details masked| Company | Contact & title | Website | Phone | Employees |
|---|---|---|---|---|
| International Shipholding Corp Mobile, AL | ||||
| K Line America Inc Richmond, VA | ||||
| Carrix Inc Seattle, WA |
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International Shipholding Corp · Mobile, AL
Contact Website Phone Employees -
K Line America Inc · Richmond, VA
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Key facts for SIC 4491 - Marine Cargo Handling
- SIC code
- 4491
- Official title
- Marine Cargo Handling
- Scope
- OSHA SIC Manual, establishment-level
- Major group
- 44 Water Transportation
- Industry group
- 449 Services Incidental to Water Transportation
- Official source
- OSHA SIC Manual
- Where SIC is used
- Used in SEC filings, government forms, and business lists. See which agencies still use SIC codes →
SIC Classification Hierarchy
Four official SIC levels, plus a more detailed commercial classification level.
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Industry · Official 4-Digit 4491 Marine Cargo Handling
One example classification path is shown. Other branches may exist. The 6-digit Marketing Level is a commercial extension, not an official SIC classification.
Other codes in Industry Group 449: 4492 · Towing and Tugboat Services 4493 · Marinas 4499 · Water Transportation Services, Not Elsewhere Classified
More specific segments in SIC 4491
Segments let you target only the companies you need. Add one or more to your list to get pricing and a free sample.
396 U.S. companies across 10 segments · Segment codes are 6-digit marketing categories that extend the official 4-digit SIC code. They are not official SIC codes.
SIC 4491 is in your list, which already includes all 10 segments.
| Code | Segment | Companies | Build your list |
|---|---|---|---|
| 4491-01 | Moorages | 11 11 companies | |
| 4491-02 | Docks (Facility) | 47 47 companies | |
| 4491-03 | Terminals-River & Marine | 36 36 companies | |
| 4491-04 | Ports | 34 34 companies | |
| 4491-05 | Ship Cleaning | 3 3 companies | |
| 4491-06 | Lighterage | 1 1 company | |
| 4491-07 | Ship Mooring Line Service | 3 3 companies | |
| 4491-08 | Marine Cargo Handling | 253 253 companies | |
| 4491-09 | Terminals Blocks Boards & Strips | 1 1 company | |
| 4491-10 | Container Management Services | 7 7 companies |
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Example companies in SIC 4491
See how SICCODE.com evaluates businesses using documented activities and official SIC definitions. Select a company to review its classification and the reasoning behind it.
404 verified U.S. companies
- Gulf And Atlantic Services Georgetown, SC View classification →
- Parker Towing Company Inc Northport, AL View classification →
- JBG Corp Honolulu, HI View classification →
- Ports America Chesapeake, LLC Baltimore, MD View classification →
- Crounse Corp Maysville, KY View classification →
- Canaveral Port Authority Cape Canaveral, FL View classification →
- P T I Detroit, MI View classification →
- Penn Terminals Inc Crum Lynne, PA View classification →
NAICS, ISIC and NACE Rev. 2.1 crosswalk for SIC 4491 - Marine Cargo Handling
Correspondences in NAICS, ISIC and NACE Rev. 2.1 (via ISIC) for SIC 4491 - Marine Cargo Handling. These mappings do not replace the official SIC definition.
| System | Code | Title |
|---|---|---|
| SIC This page | 4491 | Marine Cargo Handling |
| NAICS | 488310 | Port and Harbor Operations Port and Harbor Operations |
| NAICS | 488320 | Marine Cargo Handling Marine Cargo Handling |
| ISIC Rev. 4 | 5222 | Service Activities Incidental To Water Transportation Service Activities Incidental To Water Transportation |
| ISIC Rev. 4 | 5224 | Cargo Handling Cargo Handling |
| ISIC Rev. 4 | 8129 | Other Building And Industrial Cleaning Activities Other Building And Industrial Cleaning Activities |
| NACE Rev. 2.1 (via ISIC 5222) | 52.22 | Service activities incidental to water transportation Service activities incidental to water transportation |
| NACE Rev. 2.1 (via ISIC 5224) | 52.24 | Cargo handling Cargo handling |
| NACE Rev. 2.1 (via ISIC 8129) | 81.22 | Other building and industrial cleaning activities Other building and industrial cleaning activities |
| NACE Rev. 2.1 (via ISIC 8129) | 81.23 | Other cleaning activities Other cleaning activities |
Source: Eurostat, NACE Rev. 2.1 to ISIC Rev. 5 correspondence; United Nations Statistics Division, ISIC Rev. 4 to ISIC Rev. 5 correspondence table.
Sources for SIC 4491
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Official classification source U.S. Occupational Safety and Health Administration.
Standard Industrial Classification Manual (1987), SIC 4491. OSHA SIC Manual → -
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About this classification
This page combines the official SIC definition with classification analysis, crosswalks, and SICCODE.com commercial data. Classifications are reviewed regularly by the Industry Classification Review Team.