When barge headlogs do not meet or are not even with one another, the void or opening between them is called a __________.

Correct Answer: Option B — notch

A notch refers to the V-shaped or rectangular opening created when the headlogs of two adjacent barges do not align perfectly. This gap is a critical consideration in tow building, as it affects the structural integrity of the tow and the placement of face wires and lashings.