Question 151General Subjects - 1st Asst/Chief

The correct answer is C) prevent separated oil from mixing with the incoming bilge water. The function of item "7" in the illustration GS-0153 is to act as a baffle or weir that separates the oil that has been removed from the bilge water, preventing it from being re-mixed with the incoming bilge water. This helps ensure the effectiveness of the oil-water separation device by maintaining the separation of the oil and water phases. The other options are incorrect because: A) the tank access panel is a separate component, B) allowing the oil to exit the device is not the primary function of this specific item, and D) directing the flow against the coalescer bed is the function of a different component in the system.