|The immersion suit|
it can be unpacked and donned without assistance within 2 min, taking into account any associated clothing*, and 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 seconds;
it will cover the whole body with the exception of the face. Hands shall also be covered unless permanently attached gloves
it is provided with arrangements to minimize or reduce free air in the legs of the suit;
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 lifejacket shall be
fitted with a light and the whistle complying with the requirements for life-jackets.
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
In that case immersion suit shall permit the person wearing it:
to climb up and down a vertical ladder at least 5 m in length;
to perform normal duties associated with abandonment;
to jump from a height of not less than 4.5 m into the water without damaging or dislodging
the immersion suit, or being injured;
to swim a short distance through the water and board a survival craft.
An immersion suit made of material which has no inherent insulation shall be:
.1 marked with instructions that it must be worn in conjunction with warm clothing;
.2 so constructed that, when worn in conjunction with warm clothing, and with a lifejacket
if the immersion suit is to be worn with a lifejacket, the immersion suit continues to
provide sufficient thermal protection, following one jump by the wearer into the water from
a height of 4.5 m, to ensure that when it is worn for a period of 1h in calm circulating
water at a temperature of 5°C, the wearer's body core temperature does not fall more
An immersion suit made of material with inherent insulation, when worn either on its own or with a
lifejacket, if the immersion suit is to be worn in conjunction with a lifejacket, shall provide the
wearer with sufficient thermal insulation, following one jump into the water from a height of 4.5 m,
to ensure that the wearer's body core temperature does not fall more than 2°C after a period of 6h
immersion in calm circulating water at a temperature of between 0°C and 2°C.
A person in fresh water wearing either an immersion suit or an immersion suit with a lifejacket, shall be able to turn from a face-down to
a face-up position in not more than 5 seconds.