Tugboat
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A tugboat or tug is a marine vessel that manoeuvres other vessels by pushing or pulling them, with direct contact or a tow line. These boats typically tug ships in circumstances where they cannot or s
Tugboat CSS Teaser is captured by USS Maratanza.
Justine McAllister, a tug boat in New York Harbor, January 2008
Fleet tug USS Tawasa (1,255 tons, 205 ft), which towed a nuclear depth charge as it was detonated in Operation Wigwam in 1955
Articulated tug and barge (ATB)
Bollard pull
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Bollard pull is a conventional measure of the pulling power of a watercraft. It is defined as the force exerted by a vessel under full power, on a shore-mounted bollard through a tow-line, commonly me
Tugboat undergoing a bollard pull measurement