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Choose a otation device that you will want to wear
A good choice for a otation device is one that will offer sucient buoyancy for your
size and body type to raise your airway (mouth and nose) above water. Also important
is comfort and mobility out of the water so that it can be worn at all times during your
boating activity. An increased performance level (more otation and turning) should be
considered when in rougher waters or when further offshore where rescue assistance
may be a long time coming. Some activities require special features or accessories for
better visibility, for a more secure t in wave conditions and for thermal protection.
Cold Shock
Unexpected immersion (even in moderately cold water) can cause involuntary gasping and
loss of muscle control. It can take one minute or more for these reactions to subside and
there is a risk of inhaling water. You really need the support of a otation device in this
situation. In colder water, swim failure can occur even for strong and experienced swimmers.
Trying to put on and fasten a otation device after immersion can be impossible. Remember
that on a hot sunny day the water can still be cool and the effect of sudden immersion
shocking to the nervous and breathing systems. Choosing a comfortable device and being
diligent about wearing it can save you in these critical rst moments.
Hypothermia
Prolonged immersion in cold water (after one hour or more) leads to a loss of body heat.
Over time (depending on water temperature, body type and thermal protection) the core
temperature of the body decreases. This produces a condition called hypothermia which
is very serious and can lead to unconsciousness and circulatory failure. Swimming and
treading water accelerates heat loss. Wearing a otation device is essential to help you
conserve body energy and increase your survival time. It enables you to oat quietly and
curl up arms and legs in a Heat Escape Lessening Posture (HELP), with the head out of
water, also reducing heat loss from the head, under the arms, and the groin area.
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