Answer:
Barges and Towboats
Step-by-step explanation:
Each barge has a carrying capacity equal to 60 semi trailers.
A standard barge is 200 feet long, 35 feet wide, and when
loaded to its 1500-ton capacity needs a nine-foot depth of
water to float. Barges are cabled together into a “tow,”
which can be longer than three football fields. A standard
tow of 15 barges can be pushed by a single towboat. A
towboat may be 150 feet long, four stories high, and
6000 horsepower.