The asteroid tugboat idea was developed by Schweickart and his team at Foundation B612.
The tugboat encircles the iceberg with a rope and nudges it next to the barge.
The tugboat and barge were engulfed in flames, and heavy smoke billowed from the scene.
Another option the department was considering: Hire a tugboat to tow the wreck to the harbor at nearby Newport, Ore.
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The Yemeni tugboat was captured on Sunday, a day after the 20, 000-tonne German container vessel, the Hansa Stavanger, was seized.
It had a mostly plumb bow, a bare aluminum hull, and deck hardware that looked like it came off a tugboat.
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Here's her sad story: On Mar. 7, 1993, Captain George Coram went down with his tugboat off the New Jersey coast.
The sixth was Sergio Basso, who worked for a tugboat operator.
The journey was further delayed for four hours when the towline from the lead tugboat to the ship snapped, and another tug pushing the ship broke a bit.
Petitioner generally travels to the New York City area to pick up tugboat and barge combinations that are used to load and deliver petroleum or chemical products, or both.
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They turned it into a floating factory, fitted with a crane and grapple--a bucket with jaws, originally designed to take a bite out of granite--and pulled by a tugboat.
If there had been just one puffy trawler, a little tugboat of a cloud, even so much as a cotton ball of vapor against the blue, he would have hoped.
The 75m (250ft) tugboat with its crew of 10 Italians, five Romanians and one Croat was towing two barges when it was seized in the Gulf of Aden in April.
But the fire knocked out the ship's propulsion system and left the vessel slowly drifting in the Gulf until a second tugboat arrived Tuesday, joining one that had come earlier.
Behind him, seagulls fly past the picture window, tugboat horns sing, and the sun sets, casting a lavender glow over the shifting waters of the East River and the Brooklyn Bridge above.
As it was being pulled by a tugboat, the duck was serenaded for 30 minutes by the city's official police band and greeted by girls from a dance school pirouetting in orange tutus and yellow feather headdresses.
In the biggest high-profile incident in the U.S. in recent years, more than 3, 000 passengers aboard the Carnival Splendor were towed to shore in 2010 by a Mexican tugboat after an engine-room fire cut off the ship's electricity.
It was hoped the ship would be moved by a tugboat during high tide on Saturday, but crews decided not to attempt to refloat the vessel as they were keen to "take their time" and "prepare a plan".
The crew of the rescue tugboat Nan Hai Jiu 197, Nan Hai Rescue Bureau, Ministry of Transport, China, nominated by China, for saving four out of five persons aboard a small cargo ship that had sunk in severe weather, in January 2011.
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