This paper analyses the ANUYQ-21 display console from a human factors standpoint. The ANUYQ-21 is programmed for use in NTDS, acoustics displays and can have fire control applications. The paper is organized so that the current threat and the Naval Tactical Data System are discussed briefly in the introduction. A general discussion of man as a system component follows along with a description of the ANUYQ-21. The man-machine engineering aspects of the console are discussed at length including controls, display, viewing angles, maintainability, symbology and physical dimension. The paper concludes with comments and recommendations for improvement on this and follow-on systems.