Push-tow-unit
From BAWiki
Definition
Connection of one or more vehicles, of which at least one is in front of the motorized vessel that moves the compound and is referred to as "push boat" or "pusher". Examples: side formation, "packet" (Danube specific term for a push boat, pushing two laterally coupled barges), "Spargel association" or "Spargel" or "2-push-tow-unit" or "2er" (push boat pushing two lighters that are coupled successively, or motor cargo vessel with front coupled Light), "4-push-tow-unit" or "4er" (push boat pushing 4 barges - double row, bipartite) or 6-Light-dressing or "6er" (push boat, that pushes 6 lighters, either three-lane-two-tier or two-lane-tripartite).