Question 55 Deck Safety

70% to pass

You are the officer in charge of a navigational watch, what signal would indicate your 3 cm radar has interrogated a SART unit?

A a line of consecutive dots on the radar screen indicating the bearing of the unit
B a flashing target on the radar screen with a bearing line perpendicular to the unit
C an audible signal through your GMDSS console
D a visual alarm through the automatic identification system
AI Explanation

The correct answer is A) a line of consecutive dots on the radar screen indicating the bearing of the unit. The reasoning behind this is that a SART (Search and Rescue Transponder) unit, when interrogated by a 3 cm radar, will respond with a series of 12 consecutive radar dots displayed on the radar screen. These dots will indicate the bearing of the SART unit relative to your vessel's position, allowing you to quickly locate the source of the distress signal. The other options are incorrect because: B) a flashing target is not the correct visual indication for a SART response, C) there is no audible signal through the GMDSS console, and D) the Automatic Identification System (AIS) is not involved in the detection of a SART unit by a 3 cm radar.

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Official Resources
46 CFR Lifesaving Equipment USCG Marine Safety Center USCG National Maritime Center
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