This publication is one of a series containing statistics on the waterborne commerce of the United States during the calendar year 1979. Four of these publications present detailed data on the movements of commodities and vessels at the ports and harbors and on the waterways and canals of the United States, the Commonwealth of Puerto Rice, and the Virgin Islands, and the fifth contains summary data of the country as a whole. The numbers of the publications and the areas covered are: Area: Part 1. Atlantic Coast; Part 2. Gulf Coast, Mississippi River System, and Antilles; Part 3. Great Lakes; Part 4. Pacific Coast, Alaska, and Hawaii; Part 5. Waterborne Commerce of the United States (National Summaries).