Question 125 Deck Safety

70% to pass

Which statement concerning exposure to microwave signal radiation is TRUE?

A FCC type acceptance regulations require that radiated power be kept to a minimum so as to prevent hazard potential.
B There is minimal hazard potential as long as the Operator notifies other system users aboard the vessel that the potential exists.
C There is equally significant hazard potential from all INMARSAT antenna systems.
D The INMARSAT-B ray dome normally prevents nearby persons from being able to determine the direction of the internal antenna.
AI Explanation

The correct answer is D. The INMARSAT-B ray dome normally prevents nearby persons from being able to determine the direction of the internal antenna, which means there is a potential hazard from microwave signal radiation. This is because without being able to identify the direction of the antenna, people may inadvertently expose themselves to the microwave signal. The FCC regulations require that radiated power be kept to a minimum, but the ray dome can obscure the antenna's orientation, creating a potential hazard. The other answer choices are incorrect because they do not accurately describe the hazard potential or regulatory requirements for INMARSAT antenna systems.

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