You are transferring fuel from a supply vessel to your MODU. If you close off one tank in the line of tanks being filled, what will happen to the rate of flow to other open tanks on the same line?

Correct Answer: Option A — it will increase

Fluid dynamics dictate that in a parallel piping system, closing one branch reduces total system resistance. Consequently, the flow rate to the remaining open tanks will increase, assuming the pump output remains constant. Operators must monitor pressures closely to prevent over-pressurization during such cargo transfer operations.