Which of the following can serve as a barrier separating cargo and non-cargo areas?

The correct answer indicates that all listed options can serve as barriers separating cargo and non-cargo areas. In tanker operations, it is essential to have effective barriers to ensure the safe handling and transportation of cargo, especially in the case of hazardous materials.

Using barriers made of steel is a common practice because steel is strong and provides a durable separation that can withstand the stresses involved in transporting liquids. However, it is not the only method for creating separation between cargo and non-cargo areas.

Empty cargo tanks can also serve as effective barriers. They represent a practical solution during loading or unloading operations, offering a buffer zone that can help prevent contamination or leaks from affecting other areas of the vessel.

Additionally, a single void space can function as a barrier, as these spaces are specifically designed to provide separation and enhance the stability of the vessel. Voids can help in maintaining the vessel's structural integrity and manage the liquid movements during transit.

This context highlights that all of these methods contribute to safe operational practices in tanker vessels by providing various effective barriers to protect cargo from non-cargo areas.