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Tugs can be found in any large port. They are short, sweeping ships with very powerful engines about their size.

These tugs are among the most important auxiliary vessels because they tow the ocean giants safely through narrow river channels or to the moorings in the harbor basins. The harbor tug is connected to the ocean-going vessel by a towing hawser. A towing winch unwinds this.

Since the small ships are much easier to maneuver and much more precise to steer, they can guide the large ships unerringly through the shallow waters. Unlike other vessels, tugs do not have propellers but rotors or propellers. For that reason, they're much more agile than large ships. Tugs can turn 360 degrees on the spot.

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