Flanking Maneuver

Maneuvering action of a tow (when downbound) approaching at an angle (usually 30 to 45 degrees) at bridges or locks or in sharp bends. Only the current is utilized for headway, and the engines and rudders are used to maintain the angle until just before the lead barges reach the bridge span, at which time the engines are backed and the head of the tow is swung gently in line with the opening. Then full power is applied to drive through the opening. This is the safest way that a heavy tow can make tight passages. (TNDOT1)