This becomes especially critical when boating on cold water. Cold water causes the body's temperature to drop. Lowering of the body's core temperature is called hypothermia. It can render a person helpless in minutes. Hypothermia begins with shivering.
Judgment becomes clouded and unconsciousness sets in.
Death can occur if hypothermia is not treated. Do not massage the extremities. Do not give the victim alcohol or caffeine. If the victim is unconscious, transport the victim to a medical facility immediately.