GENTLE PULLS can be defined as TUGS, which is a four-letter word. TUGS are small, powerful vessels that are used to pull or push larger ships and barges. They are often used in ports and harbors to maneuver large vessels into place. TUGS are also used to tow disabled vessels, and they can provide assistance during emergency situations. In addition, TUGS are used to help guide ships through narrow channels and shallow waters.