Which statement is true regarding the SART?

The SART, or Search and Rescue Transponder, operates as a vital safety device in maritime operations. When activated, it transmits a signal at a frequency of 9 GHz, which is designed to be received specifically by X-band radar systems. This capability allows vessels equipped with X-band radar to detect the signal from the SART, thus facilitating the location of individuals or vessels in distress.

The 9 GHz frequency is integral to the efficiency of the SART, as it is effective at reflecting signals from radar systems operating in the X-band range, enabling rescuers to pinpoint the location of those needing assistance quickly and accurately. This functionality is crucial for search and rescue operations, maximizing the chances of a successful recovery in emergency situations.

In the context of the other choices, while they might reference performance monitors or S-band capabilities, they do not accurately describe the primary function or frequency characteristics associated with the SART. The distinction between X-band and S-band radar is significant, as the SART is specifically designed for X-band systems, making the correct answer align perfectly with its intended use in maritime safety.