Where must the "Discharge of Oil Prohibited" placard be located?

The "Discharge of Oil Prohibited" placard must be located at the bilge or ballast pump control station as it is the area where personnel making an operational decision about the management of oily water would be likely to see it. This placement ensures that anyone operating the pumps is aware of the prohibition against discharging oil into the water, thus supporting environmental protection efforts.

While it's true that proper signage is a responsibility across all vessels to promote awareness of oil discharge regulations, the specific requirement for the placard to be at the pump control station underscores its critical role in operational decision-making. Therefore, the focus is on directing attention to the location where relevant actions regarding oil management occur, ensuring the operator is reminded of the legal and environmental implications of their actions right where they are making those crucial decisions.