Officers' Quarters was the designation given to the staterooms on Constitution-class starships that were reserved for the officers. A typical quarter was segregated into a sleeping and working area. Directional signs gave information as to where the officers' quarters were located, along with the room numbers. In post-refit Constitution-class starships, sonic showers were added to the rooms. These quarters were located on Deck 5. (TOS: "Where No Man Has Gone Before" ; Star Trek: The Motion Picture)