THE LOGISTICAL SYSTEM PORTS AND MARITIME TRANSPORTATION OVERVIEW Mexico has 73 ports, terminals, and marinas along its Pacific, Gulf, and Caribbean coasts. However, only a handful of these ports handle large volumes of traffic. Eighty percent of Mexico's foreign trade moves through 18 ports, (Puertos Mexicana, 1993b). Some of these ports, such as Cozumel and Puerto Vallarta are primarily designed for cruise ships, rather than freight. In addition, some ports, such as Coatzacoalcos, primarily handle fluids. Reflecting the concentration of freight into a few ports, Veracruz and Altamira/Tampico account for over 60 percent of the country's container traffic and six ports account for over 90 percent (Figure 4). Excluding petroleum and salt, since 1982 the total volume of cargo passing through the ports has increased by over 50 percent. Approximately 70 percent of this volume is accounted for by exports and imports, with the remainder being coastal traffic. In recent years, coastal traffic has grown faster than imports and exports. However, this is most likely a transitory phenomena. The volume of container traffic still is fairly small. In 1992, 445,257 TEU's passed through Mexican ports, the equivalent of about two weeks of traffic through U.S. ports. However, growth has been rapid, 27.9 percent more containers in 1992 than in 1991 (Puertos Mexicana). Most perishables move either in containers or as general cargo. The volumes of these types of movements for the 18 largest ports are summarized in Table 2. The ports currently moving appreciable volumes of containers and general freight are the most likely conduits for