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Situational awareness requires you’re alert at all times.
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In addition, inhaled water can damage lungs, and heart problems can develop as cold blood from arms and legs is released into the body’s core. Once rescued, people are still in danger of cardiac arrest. Post-immersion circum-rescue collapse occurs during or after rescue. Hypothermia can eventually lead to loss of consciousness and death, with or without drowning. Cold water robs the body of heat 25 times faster than cold air. Hypothermia occurs when the body loses heat faster than it produces, cooling vital organs. Long-term immersion hypothermia may set in after 30 minutes, depending on water temperature, clothing, body type and behavior in the water. A life jacket can help keep your core warm and keep you afloat if you loss consciousness. A life jacket will help keep you afloat when your body loses it's strength. Even strong swimmers can lose the strength necessary to pull themselves out of the water or even keep their head above water.
#Cold water free manual#
Manual dexterity, handgrip strength and speed of movement can drop by 60% to 80%. The muscles and nerves in the arms and legs cool quickly. Short-term immersion swim failure occurs three to 30 minutes following a fall overboard into cold water. You may also experience sudden changes in blood pressure, heart rate and heart rhythm, which can result in death. A life jacket will help prevent water inhalation by keeping your head above the water. You can experience immediate involuntary gasping, hyperventilation, vertigo and panic - all of which can result in water inhalation and death from drowning.
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Initial cold shock occurs in the first three to five minutes of accidentally falling overboard. It can kill a person in any of the following four stages: STage 1: Cold-water Shock Don't be fooled by warm air temps, because many Washington waterways stay under 60 degrees Fahrenheit most of the year.Ĭold water is deadlier than you think. You should treat any water temperature below 60 degrees Fahrenheit with caution. Safety experts define "cold water" as anything below 70 degrees.