These requirements cover immersion suits intended for United
States Coast Guard (USCG) approval under 46 CFR 160.171.
The suits covered by these requirements are intended to reduce
the occurrence of shock to the wearer upon entering cold water and
retard the onset of hypothermia (reduce the rate of body heat loss
during periods of immersion in water). Immersion suits are required
by the USCG to provide thermal protection properties in accordance
with USCG regulations [see Thermal Protection Test, Section 22 in
this standard and 46 CFR 160.171-17(d)].
These requirements cover immersion suits that incorporate
auxiliary, inflatable means to provide buoyancy as well as suits
that rely only on inherently buoyant material to provide the
required flotation characteristics.
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