The communications package consisted of a six-station intercom system, UHF radios, and a radio security set. The boats were shipped with AN/ARC-54 FM radios. However, these proved unreliable, with an operational ready rate of only 35 percent. Army units sought to replace them with VRC-125s. While it is not known if this replacement occurred, one ACV did receive a VRC-46 radio. The hovercraft carried a Decca 202 radar with a dish antenna, which could detect targets within . Some Army ACVs were fitted with XM3 Personnel Detectors (better known as XM-3 "people sniffers"), which could detect human emissions including carbon and ammonia. This equipment was used to find hidden enemies. Dog teams were also sometimes carried to help detect enemies. The radar was found to be very effective, including for navigating in low-visibility and foggy conditions.