488390  Other Support Activities for Water Transportation 

This U.S. industry comprises establishments primarily engaged in 
providing services to water transportation (except port and harbor 
operations; marine cargo handling services; and navigational 
services to shipping).

The data published with NAICS code 488390 are comprised of these 
parts of the following SIC industries:
 
    4499 (pt)  Other services incidental to water transportation
    4785 (pt)  Marine cargo inspectors and surveyors
    7699 (pt)  Ship scaling