Hyperspace Velocity Rating or HVR refers to the speed of a vessel in hyperspace.

Each HVR unit is equivalent to 10 parsecs per standard hour, with the current maximum HVR being 20 HVR, and the minimum being 0.001 HVR.

HVR doesn't truly describe the velocity that a ship's engines are capable of, but more accurately describes the quality of the tunnel created by a ship's hyperdrive. The higher the quality of the tunnel, the faster a ship may travel through it.