What is the modern NAICS equivalent for SIC 4499?

Q: What is the modern NAICS equivalent for SIC 4499?

SIC code 4499 maps to the following modern 2022 NAICS codes: 488390 - Other Support Activities for Water Transportation, 532411 - Commercial Air, Rail, and Water Transportation Equipment Rental and Leasing, 488330 - Navigational Services to Shipping, 488310 - Port and Harbor Operations.

Registry · SIC Index · Group 44

SIC 4499 — Water Transportation Services, NEC

SIC 4499 is 'Water Transportation Services, NEC', a 4-digit Standard Industrial Classification (SIC) code under Major Group 44: Water Transportation (Division E: Transportation, Communications, Electric, Gas, and Sanitary Services); it maps to modern 2022 NAICS code(s): 488390 (Other Support Activities for Water Transportation), 532411 (Commercial Air, Rail, and Water Transportation Equipment Rental and Leasing).

Description & Classification

SIC code 4499 representing 'Water Transportation Services, NEC' is an industry category in the Standard Industrial Classification (SIC) system under U.S. OSHA and Federal procurement registers.

Modern NAICS Crosswalk

Trace the modern equivalent classifications in the 2022 North American Industry Classification System (NAICS) database:

NAICS 488390 - Other Support Activities for Water Transportation (via SIC1987:4499→NAICS1997:48839→2002:488390→2007:488390→2012:488390→2017:488390→2022:488390)
NAICS 532411 - Commercial Air, Rail, and Water Transportation Equipment Rental and Leasing (via SIC1987:4499→NAICS1997:532411→2002:532411→2007:532411→2012:532411→2017:532411→2022:532411)
NAICS 488330 - Navigational Services to Shipping (via SIC1987:4499→NAICS1997:48833→2002:488330→2007:488330→2012:488330→2017:488330→2022:488330)
NAICS 488310 - Port and Harbor Operations (via SIC1987:4499→NAICS1997:48831→2002:488310→2007:488310→2012:488310→2017:488310→2022:488310)

Classification Details

SIC Code	4499
Industry Title	Water Transportation Services, NEC
Division	Division E: Transportation, Communications, Electric, Gas, and Sanitary Services
Major Group	Major Group 44: Water Transportation
Source / Verified	US Census 1987 SIC Concordance / 2026-06-28

Related Resources & Compliance Guides

Further regulatory reference links for legacy SIC code 4499:

SIC Codes Complete Compliance Guide — Detailed history and active legal applications of the SIC classification framework.
Why Legacy SIC Codes Persist Guide — How credit systems and the SEC still rely on SIC metadata.
SIC ↔ NAICS Crosswalk Tool — Trace industrial code conversions dynamically.
SIC Major Group 44 Hub — View other legacy industries in this business division.

Related Industries in Major Group 44

4412 - Deep Sea Foreign Transportation of Freig...4424 - Deep Sea Domestic Transportation of Frei...4432 - Freight Transportation on the Great Lake...4449 - Water Transportation of Freight, NEC...4481 - Deep Sea Transportation of Passengers, E...4482 - Ferries...4489 - Water Transportation of Passengers, NEC...4491 - Marine Cargo Handling...

Frequently Asked Questions (FAQ)

What industry does SIC code 4499 represent?

What is the modern 2022 NAICS mapping for SIC 4499?

SIC code 4499 maps to modern NAICS codes: 488390 - Other Support Activities for Water Transportation, 532411 - Commercial Air, Rail, and Water Transportation Equipment Rental and Leasing, 488330 - Navigational Services to Shipping, 488310 - Port and Harbor Operations.