SIC 4432 — Freight Transportation on the Great Lakes - St. Lawrence Seaway
Description & Classification
SIC code 4432 representing 'Freight Transportation on the Great Lakes - St. Lawrence Seaway' 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 483113 - Coastal and Great Lakes Freight Transportation (via SIC1987:4432→NAICS1997:483113→2002:483113→2007:483113→2012:483113→2017:483113→2022:483113)
Classification Details
| SIC Code | 4432 |
|---|---|
| Industry Title | Freight Transportation on the Great Lakes - St. Lawrence Seaway |
| 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 4432:
- 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
Frequently Asked Questions (FAQ)
What industry does SIC code 4432 represent?
SIC 4432 is 'Freight Transportation on the Great Lakes - St. Lawrence Seaway', 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): 483113 (Coastal and Great Lakes Freight Transportation).
What is the modern 2022 NAICS mapping for SIC 4432?
SIC code 4432 maps to modern NAICS codes: 483113 - Coastal and Great Lakes Freight Transportation.