Updated: Jul 11
LSA Code Chapter II
2.3 IMMERSION SUITS
2.3.1 GENERAL REQUIREMENTS FOR IMMERSION SUITS
184.108.40.206 The immersion suit shall be constructed with waterproof materials such that:
IMMERSION SUITS 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 s;
it will cover the whole body except for 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.
220.127.116.11 An immersion suit that also complies with the requirements of section 2.2 may be classified as a lifejacket.
18.104.22.168 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;
swim a short distance through the water and board a survival craft.
(Refer to paragraph 3.1.3 of the Recommendation on Testing of Life-saving Appliances adopted by the Organization by resolution A.689(17) )
22.214.171.124 An immersion suit that has buoyancy and is designed to be worn without a lifejacket shall be fitted with a light complying with the requirements of paragraph 2.2.3 and the whistle prescribed by paragraph 126.96.36.199.
188.8.131.52 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.
2.3.2 THERMAL PERFORMANCE REQUIREMENTS FOR IMMERSION SUITS
184.108.40.206 An immersion suit made of a material that has no inherent insulation shall be:
marked with instructions that it must be worn in conjunction with warm clothing; and
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 1 h in calm circulating water at a temperature of 5°C, the wearer's body core temperature does not fall more than 2°C.
220.127.116.11 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 in, 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.
2.3.3 BUOYANCY REQUIREMENTS
A person in freshwater wearing either an immersion suit or an immersion suit with a lifejacket shall turn from a face-down to a face-up position in not more than 5 sec.