Αχίλλι – Σκύρος.
A tugboat (tug) is a boat that maneuvers vessels by pushing or towing them. Tugs move vessels that either should not move themselves, such as ships in a crowded harbor or a narrow canal, or those that cannot move themselves alone, such as barges, disabled ships, or oil platforms. Tugboats are powerful for their size and strongly built; some are ocean-going. Some tugboats serve as icebreakers or salvage boats. Early tugboats had steam engines; today diesel engines are used.
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