Drift Mode

RCS thruster

Reaction control thrusters (shown here on a Galaxy-class starship) can be used in "Drift Mode" for increased subtlety of movement

Drift Mode was one of the settings of the reaction control thrusters utilized by the Federation on most starships. It was used for low-velocity, precision propulsion.

In 2371, Captain Kathryn Janeway ordered Lieutenant Tom Paris to utilize Drift Mode while the USS Voyager was navigating within a large space-dwelling being, so as to not harm the being. (VOY: "The Cloud")