Paragraph 3
Performance
An inherently buoyant lifejacket shall not be damaged in stowage throughout an air temperature range of −30 degsC to +65 degsC.
It shall operate throughout a sea-water temperature range of −1 degsC to +30 degsC.
It shall be capable of satisfactory operation in a sea-way.
It shall have sufficient buoyancy and stability in calm fresh water to—
lift the mouth of an exhausted or unconscious person not less than 120mm clear of the water with the body inclined backwards at an angle of not less than 20 degs and not more than 50 degs from the vertical position;
turn the body of an unconscious person in the water from any position to one where the mouth is clear of the water in not more than 5 seconds;
An inherently buoyant lifejacket shall allow the person wearing it to swim a short distance and to board a survival craft.
It shall not sustain burning or continue melting after being totally enveloped in a fire for a period of 2 seconds.