You have abandoned ship and are adrift in a liferaft with a SART. What signal will indicate to you that a 3 cm radar has interrogated the SART unit?

Correct Answer: Option B — the unit will emit an audible alarm and visual signal

When interrogated by an approaching vessel or aircraft 3 cm X-band radar, the SART immediately responds by emitting both an audible and visual alarm to reassure survivors that rescue radar contact is established.