SPS-22
An abortive L-band air search radar for 'flush-decked vessels', using three radars in synchronous operation to cover up to 360° in azimuth. This is almost certainly the set of three SPS-6Cs in radomes planned for the Forrestal, before she was redesigned with an island and a more conventional electronic configuration. She would have had one on either beam and one right aft, and the function of the SPS-22 electronics was coordination, so that all three would feed into a common display. Westinghouse.
FWIW. I think a three-antenna installation is almost a certainty, with one of the three cantilevered off of the stern and off to one side.