Powerfull new U.S. Tug at work. A new U.S.

Powerfull new U.S. Tug at work. A new U.S. tug, most powerful of its size and known as the Ingalls Sea Mule, tows a heavily-laden barge during trials in a U.S. port. Easiliy handled by a crew of five, the Sea Mule can either tow or push barges in harbour operations. Forty-two feet (12.6) long, and 15 feet (4.5 meters)broad, this tug develops 500 horsepower, and can travel 10 miles (16kilometers) an hour. The Sea Mule can be tranported in sections on railway cars and ocean-going ships, and can be asembled in a few hours.