SIC Code 4481 — Deep Sea Transportation of Passengers, Except by Ferry

4-digit industry in the 1987 Standard Industrial Classification — still requested by banks, insurers, SEC filings and legacy systems.

Code	4481
Title	Deep Sea Transportation of Passengers, Except by Ferry
System	SIC 1987 (final edition — replaced by NAICS in 1997)

The SIC was last revised in 1987 and officially superseded by NAICS in 1997, but it never fully disappeared: the SEC still tags EDGAR filings with SIC codes, and many banks, insurers and legacy databases keep requesting it. That is why converting between the two systems is still routine work.

NAICS equivalents of SIC 4481

From the official U.S. Census concordance (1987 SIC → 2002 NAICS). Where the 2002 code no longer exists in NAICS 2022, the closest current code is shown.

NAICS 2002	Title (2002)	Current 2022 code
483112	Deep Sea Passenger Transportation	483112 (same code)
483114	Coastal and Great Lakes Passenger Transportation	483114 (same code)

Other SIC codes in 44xx

• 4412 — Deep Sea Foreign Transportation of Freight
• 4424 — Deep Sea Domestic Transportation of Freight
• 4432 — Freight Transportation on the Great Lakes-St. Lawrence Seaway
• 4449 — Water Transportation of Freight, Not Elsewhere Classified
• 4482 — Ferries
• 4489 — Water Transportation of Passengers, Not Elsewhere Classified
• 4491 — Marine Cargo Handling
• 4492 — Towing and Tugboat Services
• 4493 — Marinas
• 4499 — Water Transportation Services, Not Elsewhere Classified

Data: 1987 SIC titles (OSHA/Census) and official Census concordance — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.