Powerful is the word with which to describe a new type of tugboat. In the photo above the 137-ton Diesel electric tug Sheila Moran is shown towing the 43,153-ton liner Ile de France at a speed of four miles an hour against an incoming tide in New York harbor. The tugboat is powered with a 900-horsepower, two-cycle Diesel engine. The test was arranged to show the great strength of this type of boat.
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