Subelement E: Survival Craft Equip & S.A.R.— Topic :
Question 28E5
Element 7R (GMDSS-RO)How can vessel personnel detect the operation of a SART in its vicinity?
Explanation
Vessel personnel detect a SART (Search and Rescue Transponder) using their ship's X-band radar. The SART, when interrogated by the radar's pulse, transmits a unique signal on the radar's 3-cm wavelength (9 GHz band). This signal appears on the radar display as a line of 12 equally spaced dots, radiating outward from the SART's actual position along its line of bearing. This distinctive 12-dot pattern precisely indicates the SART's location and direction.
A) Incorrect. VHF-FM Ch-70 is the Digital Selective Calling (DSC) channel. SARTs do not transmit on this frequency.
B) Incorrect. While AIS-SARTs exist and use AIS, a traditional SART operates as an X-band radar transponder. The question refers to the specific detection method of a SART's characteristic radar response.
C) Incorrect. While heavy seas can affect signal strength, the unique *pattern* used for detection is the 12-dot signal, not just its intermittent appearance.
Related Questions
28E3 How can rescue personnel detect that a SART is transmitting in the immediate vicinity?28E4 What signal is detected as originating from an AIS SART and how is the signal displayed?28E6 What is not an advantage of an AIS SART signal when compared to a radar-based SART signal?29E1 Which of the following statements concerning testing and maintenance of SARTs is true?29E2 Why is it important to limit the duration of testing a SART?