Data punctures a coolant tank

A schematic of the plasma coolant tanks aboard the Enterprise-E

A coolant tank was a containment unit to store gases or liquids such as plasma coolant, used to cool parts of a starship or any vessel or base whose power generation units created extreme excess heat that could damage or destroy nearby components or structures.

The USS Enterprise-E had coolant tanks on the left and right sides of the warp core. One tank was punctured by Data in a final blow to the Borg Queen. (Star Trek: First Contact)

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