Regulus Toledo
C.1955. Starboard-bow view of the cruiser USS Toledo (CA-133) firing a Regulus I surface-to-surface guided missile. The missile is controlled by the SPQ-2 radar trained to starboard at the head of the mainmast. Other radars visible include the SPS-4 Zenith surface search at the head of the foremast and the SPS-6 air search below it. A Mark 25 fire control radar is fitted on the Mark 37 secondary armament director which is trained to port and partially obscured by the Mark 13 fire control radar on the main armament director. Note the twin 3-inch/50 AA guns on the main deck forward and the raised platforms amidships abaft the twin 5-inch/38 gun turret. They are controlled by the Mark 56 directors mounted on either side of the forward superstructure and amidships.