The highlighted part of a cargo tank specification plate indicates what information?

The highlighted part of a cargo tank specification plate typically indicates the amount the tank can hold, often referred to as its capacity. This is crucial information for ensuring that the tank is used safely and according to its design limits. Knowing the tank's capacity helps in planning for loading, transporting, and unloading materials, which is essential for maintaining safety standards and preventing overloading.

The specification plate provides details that are vital during transport operations. Capacity information allows for accurate calculations regarding the weight and volume of the hazardous materials being transported, ensuring compliance with regulatory requirements and safe operational practices. Understanding a tank's limits helps prevent spills and accidents associated with overfilling.

In contrast, while other options represent important information that could be found on cargo tanker specifications under different contexts, they do not specifically address the highlighted part of the specification plate in question.