Special Duty Vessels

What is special duty vessels?
Special duty vesels is a vesels wich is designed and builded for special duty and doing special work.

Types of special vessels
Tugs
Icebrakers
Dredgers
Lightships
Lifeboats
Pilot launches

Tugs
A tug (tugboat) is a boat or ship that maneuvers vessels by pushing or towing them. Tugs move vessels that either should not move by themselves, such as ships in a crowded harbor or a narrow canal, or those that could not move by themselves, such as log rafts, or oil platforms. Tugboats are powerful for their size and strongly built.Their engines are made for excelent steering.

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