Seagoing tugs (deep-sea tugs or ocean tugboats) fall into four basic categories: Types Seagoing Fleet tug USS Tawasa (1,255 tons, 205 ft) which towed a nuclear depth charge as it was detonated in Operation Wigwam in 1955 Tug and barge connected Many have deluge gun water jets, which help in firefighting, especially in harbours. Early models were powered by steam engines, which were later superseded by diesel engines. Some are ocean-going, and some are icebreakers or salvage tugs. These boats typically tug ships in circumstances where they cannot or should not move under their own power, such as in crowded harbors or narrow canals, or cannot move at all, such as barges, disabled ships, log rafts, or oil platforms. The tugboats Reid McAllister and McAllister Responder push the LPG tanker BW Volans into port at Marcus Hook on the Delaware River.Ī tugboat or tug is a marine vessel that manoeuvres other vessels by pushing or pulling them, with direct contact or a tow line. Justine McAllister, a tug boat in New York Harbor, January 2008. Tugboat CSS Teaser is captured by USS Maratanza. For the television series, see Tugs (TV series).

Dredging nozzle