The immersion survival suit shall be constructed with waterproof materials such that:
1.it can be unpacked and donned without assistance within 2 min, taking into account any associated clothing*, and a lifejacket
if the immersion survival suit is to be worn in conjunction with a lifejacket;
2.it will not sustain burning or continue melting after being totally enveloped in a fire for a period of 2 seconds;
3.it will cover the whole body with the exception of the face. Hands shall also be covered unless permanently attached gloves
are provided;
4.it is provided with arrangements to minimize or reduce free air in the legs of the suit;
5.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 which also complies with the requirements of life-jackets may be classified as a life-jacket.
An immersion suit which has buoyancy and is designed to be worn without a life jacket shall be fitted with a light and the whistle complying with the requirements for life-jackets.
If the immersion survival suit is to be worn in conjunction with a life jacket, the life jacket shall be worn over the immersion suit. A person wearing such an immersion suit shall be able to don a life jacket without assistance.