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The answer would be at all times if on the water. PFD also known as life jacket,life preserver,life vest,flotation suit or buoyancy aid is design to assist a person to float in the water. Hope this is the answer and would be of help.
While you should always wear your PFD, it is it is important to wear your PFD during the following times Boating at night, or at times of reduced visibility - When it is hard to see, it will take that much longer to find you if you fall overboard.
What type of PFD is required?
The U.S. Coast Guard (USCG) used that all vessels have one Type I, II, or III personal application that is wearable, and of the proper size for each person on board. .
Thus, it is important to wear your PFD .
To learn more about PFD click here:
https://brainly.com/question/10738274