Subelement E: Survival Craft Equip & S.A.R.— Topic :
Question 32E1
Element 7R (GMDSS-RO)Which of the following would best be used for visual detection of a distressed vessel?
Explanation
An EPIRB's (Emergency Position-Indicating Radio Beacon) strobe light is specifically designed for *visual* detection of a distressed vessel, especially during low-light conditions or at night. It emits a bright, flashing light that can be seen by search aircraft or vessels.
The other options involve radio frequency transmissions:
A) A 9-GHz SART (Search And Rescue Transponder) beacon transmits a signal that creates a series of dots on a search radar display, an electronic, not visual, detection method.
C) A 121.5-MHz EPIRB beacon and D) A 406-MHz EPIRB beacon transmit radio signals. The 406 MHz signal alerts satellites with position data, and the 121.5 MHz signal is used for local homing. Neither of these radio signals is directly visible to the human eye.
Related Questions
31E5 Which of the following statements concerning EPIRBs is false?31E6 Which of the following EPIRBs is most likely to be used to transmit a Distress alert signal?32E2 Which piece of required GMDSS equipment is the primary source of transmitting locating signals?32E3 What may be used as a homing signal by the search and rescue vessels in the immediate vicinity of the ship in Distress?32E4 What part of a satellite EPIRB may function as a visual aid to rescue vessels?