0 a boat with a powerful engine which can change direction easily and is used to pull large ships into and out of port --
Such barges need to be towed by tugboats or pushed by towboats.
The 228 ton launched in 1913 was a tugboat.
Tugboats had to be used to pull her free.
It is often in the form of a barge which is towed or otherwise moved by means of tugboats; however, many are also self-propelled.
That team succeeded in planting charges on two tugboats moored in the basin.
Larger ships are obliged to accept pilots and specialised canal helmsmen, in some cases even the assistance of a tugboat.
Other systems designed to divert an asteroid such as tugboats, gravity tractors, solar sails and mass drivers require 10 or 20 years of advance notice.
The largest part of the floating boardwalk was safely guided under the bridge by a tugboat and past other infrastructure before being safely secured.
