What does the term "sheen detection" refer to in spill prevention?

The term "sheen detection" refers specifically to monitoring for visible oil films on water surfaces. This is an important aspect of spill prevention, as the presence of a sheen can indicate that oil has escaped from a vessel or containment area and is spreading on the water's surface. Early detection of a sheen allows for quick response measures to mitigate environmental impact and to address any potential leakage from cargo tanks.

This method of monitoring is crucial for maintaining maritime safety and compliance with environmental regulations. It ensures that any potential spills are identified promptly, allowing for containment and cleanup efforts to be initiated before the situation escalates. Focusing on visible oil films provides a direct indication of possible pollution events and safeguards both marine ecosystems and human health.

The other options do not address the concept of sheen detection directly. Detecting temperature changes in cargo tanks pertains more to the safety and operational status of the cargo rather than spill prevention, while identifying crew training needs relates to workforce capability and safety procedures but not specifically to spill detection. Verifying the integrity of cargo containment systems primarily involves structural assessments and maintenance protocols rather than monitoring surface oil presence.