Which of the following describes the correct flood-water crossing technique?

• A. Slowly, in a high gear, with engine speed high
• B. Slowly, in a low gear with high engine speed
• C. Quickly in a low gear with high engine speed
• D. Slowly, in a low gear, with engine speed high

Answer: (D)

When crossing flood water, you need steady torque and control to prevent stalling or losing traction. A low gear keeps the engine in its torque band, giving you the power to push through the water without needing to rev the engine to the limit. Keeping the engine speed relatively high in that gear helps prevent the engine from stalling if the load or water resistance increases, and it also helps maintain a stable flow of power through the water. Moving slowly minimizes the risk of creating large waves that could flood the air intake or push you off course, while quickly moving through water reduces control and increases the chance of water being drawn into the system. So the best approach is to progress slowly in a low gear with higher engine revs to sustain power and control throughout the crossing.