The term BARGE PULLER can be summarized as a TUG, which is a three-letter word. A TUG is a type of vessel that is used to pull or push barges, ships, and other large vessels. It is typically powered by diesel engines and has a powerful bow thruster for maneuvering. Tugs are also used for towing, pushing, and assisting in the docking of larger vessels. They are often used in ports and harbors to move vessels around.