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Divers need to be able to perform a controlled
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and must be able to slow or stop if they have a
problem clearing their ears or sinuses.
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Not all dives are on the bottom.
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Some dives are mid-water or on a ship's hull.
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if you plan a dive to a certain depth, you should
not exceed that depth or your dive tables will
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In the case of Nitrox you may have a maximum
depth based on what you are breathing.
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Before you make a controlled descent, there are
a few things you need to do.
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Check with your dive buddies and make sure
they are ready to leave surface.
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Get a compass heading on the beach, or your
exit point, as a reference.
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Check your cylinder pressure and then check
your time so you know when your dive starts.
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To make a controlled descent, put your inflator/
deflator high above your left shoulder and vent
air from your BC until you start to descend.
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On the way down, if you need to, You can add
small bursts of air to your BC to control your
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When making a controlled descent we always
keep our feet beneath us so if we need to use
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to slow or stop our descent because of ear or
sinus issues, we can.
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We only descend as fast as the slowest diver in
the team and we always stay together as buddy
teams when diving.
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That's a controlled descent.