A lifejacket shall not sustain burning or continue melting after being totally enveloped in a fire for a period of 2 s.
An adult lifejacket shall be so constructed that:
a.at 75% of persons, who are completely unfamiliar with the lifejacket, can correctly don it within a period of 1 min without assistance,guidance or prior demonstration;
b.arter demonstration,all persons can correctly don it within a period of 1 min without assistance;
c.it is clearly capable of being worn in only one way or,as far as is practicable,cannot be donned incorrectly;
d.it is comfortable to wear;and
e.it allows the wearer to jump from a height of at least 4.5 m into the water without injury and without dislodging or damaging the lifejacket.
An adult lifejacket shall have sufficient buoyancy and stability in clam fresh water.
An adult lifejacket shall allow the person wearing it to swim a short distance and to board a survival craft.
A lifejacket shall have buoyancy which is not reduced by more than 5% after 24 h submersion in fresh water.
Each lifejacket shall be fitted with a whistle firmly secured by a cord.