3.4 It shall have sufficient buoyancy and stability in calm fresh water to:
3.4.1 lift the mouth of an exhausted or unconscious person not less than 120 mm clear of the water with the body inclined backwards at an angle of not less than 20° and not more than 50° from the vertical position; and
3.4.2 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.