The immersion suit shall be constructed with waterproof materials.
it can be unpacked and donned without assistance within 2 min, taking into account any associated clothingand a lifejacket if the immersion suit is to be worn in conjunction with a lifejacket;
it will not sustain burning or continue melting after being totally enveloped in a fire for a period of 2 s;
it will cover the whole body with the exception of the face; hands shall also be covered unless permanently attached gloves are provided;
it is provided with arrangements to minimize or reduce free air in the legs of the suit; and
following a jump from a height of not less than 4.5 m into the water there is no undue ingress of water into the suit.
An immersion suit shall permit the person wearing it ,and also wearing a lifejacket if the immersion suit is to be worn in conjunction with a lifejacket,to:
climb up and down a vertical ladder at least 5 m in length;
perform normal duties associated with abandonment;
jump from a height of not less than 4.5 m into the water without damaging or dislodging the immersion suit ,or being injured;and
swim a short distance through the water and board a survival craft.
If the immersion suit is to be worn in conjunction with a lifejacket,the lifejacket shall be worn over the immersion suit.A person wearing such an immersion suit shall be able to don a lifejacket without assistance.