vy Dd m 2B 2 oS 0S v FOREIGN TRADE ZONES port. The economic and transportation investigations of the Ship- ping Board and the War Department have been designed to secure lata necessary for determining the proper function of each port in our national transportation system and to enable the Government to take the measures required to encourage the adequate utilization of ports properly located to serve as natural interchange points for our rail and ocean traffic. This duty has involved consideration of our foreign, coastwise, and inland water movements, the determina- tion of production and consumption, where they center, the seasons at which commodities are available for shipment, the paths by which they move, and the transportation lines of least resistance, whether by land or water, or some joint route, taking into account all natural or artificial obstacles. These investigations and the cooperation authorized with local interests, would be particularly needful in connection with the sstablishment of free ports, in order to insure the most desirable location and the most efficient arrangement and planning of the nort and its facilities. NAVIGATION FACILITIES Ee v In many of the free ports of Europe goods are redistributed to sther countries by rail as well as by water, but in the United States such redistribution would be mainly by water, exceptions being goods to and from Canada and Mexico, which might move to and from those countries under bond by all-rail routes. In some cases the establishment of free ports in the United States would involve work by the Federal Government in connection with the construction and maintenance of channels and barbor improvements. Even where existing channels may be regarded as adequate for establishing a free port, future commercial developments and future changes in the sizes and types of vessels seeking the port might result in demands ‘or further improvements at the expense of the United States. Unless the navigation facilities are suitable for the classes of vessels which are most appropriate for the routes and the trade to he served, the development of the free port will be seriously retarded. In connection with the investigations now made by the Corps of Engineers, prior to undertaking proposed harbor improvements, it is not infrequently found that the improvements desired by local interests will involve a greater expenditure by the Federal Govern- ment for original construction or maintenance than is warranted by the benefits to commerce and navigation. In establishing free ports in the United States the same expert study of the navigation and commercial conditions should be made as is now required by Con- gress before projects are adopted for improvement of navigation facilities at our ports.