Slipstream

A slipstream is a region behind a moving object in which a wake of fluid (typically air or water) is moving at velocities comparable to the moving object (in comparison to the ambient fluid through which the object is moving). The term slipstream also applies to a form of FTL travel featured in the sci-fi television series Andromeda. Many of the starships featured in the series are equipped with Slipstream drives, which allows them to travel at subluminal velocity. A Gravity Field Generator drastically reduces the mass of the ship and then a slipstream drive opens a slippoint which the ship enters. The pilot then navigates the series of slipstream "strings" until they reach the desired slippoint where they exit the slipstream.