Using water power to propel free barges through navigation locks
from The Maritime Executive
While there is economic merit to sailing extended length barge trains along inland waterways, the cost of lengthening navigation locks can be prohibitive. It may be possible to use water power to transit non-powered sections of a barge train through navigation locks. The ability to sail barge trains along inland waterways provides a nation with a low cost method of moving massive volumes of bulk cargo.
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