What is the purpose of the SART's audible tone alarm?

The purpose of the SART's audible tone alarm is to inform survivors that assistance may be nearby. This alarm is a vital feature of Search and Rescue Transponders (SARTs), which are used in maritime safety. When activated, the SART emits an audible signal that helps alert individuals in distress that rescue operations are underway and that help is on the way. The audible tone is essential for increasing the chances of survival, as it provides reassurance to survivors and serves as a cue for rescuers searching for individuals in distress. The other options relate to different functionalities and alerts but do not capture the primary objective of the audible tone alarm in signaling that help is near.