The outer shell has variable mass. This allows a TARDIS to hover or float. Using short bursts of power, a TARDIS is capable of generating kinetic movement. It is possible to maneuver in a zero gravity environment and put a TARDIS into a spin. The acceleration is at least 9.8 meters per second squared (allowing it to hover on a G-Type world) or travel through space. It can compensate for 28 kilometer per hour winds. A TARDIS is equipped with Vworp Drive for long distance space travel. Putting the TARDIS in Hover Mode makes it easier to use the Manual Overide controls. While the Manual Overide is activated the ship is harder to pilot. Putting the TARDIS in Hover Mode makes it easier to use the Manual Overide controls.