Answer:-
A standard lifejacket is designed to keep a person afloat and face-up in the water, even if they are unconscious. It usually has a buoyancy rating of 150 Newtons or more, providing enough flotation for most adults. The lifejacket is brightly colored, often with reflective patches to increase visibility in rescue situations. It also has a whistle attached for signaling. One important feature of a standard lifejacket is that it must automatically turn a person onto their back, ensuring their airway stays above water for easier breathing.
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