DISCLAIMER: This article is being kept online for historical purposes. Though accurate at last review, it is no longer being updated. The page may contain broken links or outdated information.
Bringloe, Thomas The Glosten Associates Inc., Seattle, Washington.
- Physical constraints
- Resistance and propulsion
- Tug–barge connections
- Regulatory environment
- Structural design codes
- Economic influences
- Additional Reading
The U.S. tug and barge fleet has grown to nearly 4000 modern tugboats and towboats and more than 27,000 barges. The industry moves over 800 million tons (725 million metric tons) of raw materials and finished goods each year. A recent study by the Texas Transportation Institute and Texas A&M University compared inland waterway capacity to other transport modes (truck and rail) and noted that the inland waterway alone accounts for “about 624 million tons of waterborne cargo transit … a volume equal to about 14% of all intercity freight. This commerce has an overall value of about $70 billion, substantially contributing to America's economic strength.” The study concluded that inland waterways “have lots of unused capacity—capacity which could be used to relieve growing transportation congestion, with lesser impacts on air quality, public safety and the environment than the other modes.”
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 46 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information