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1 Diving at Reduced Risk with Aladin
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IV Uwatec
®
Aladin
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2
– Descend less deep for the repetitive dive than for the previous dive.
– Plan for a minimum surface interval of three to four hours.
– Do not attempt to repetitive dive if the <Atn> is visible on the display.
– Take a day off from diving every week.
– Repetitive dives after exchanging the dive computer: Wait at least 24 hour before you start with the
repetitive dive.
1.4 Response in increased risk situations
If the dive includes an increased risk situation, Aladin
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reacts automatically to warn the diver of
this risk and increase required decompression, as the case may be. A change of decompression may
be indicated to minimize the risk. The diver can further reduce the risk by following conservative diving
practices on the next dive and at the same time avoiding long decompression stops.
A few examples are on the following pages:
Situation 1:
The diver ascends too rapidly:
Reaction of computer:
The model calculates the formation of bubbles due to the excessively rapid
ascent. The no-stop time is shortened or a longer (and eventually at greater
depth) decompression prescription is displayed in order to assure increased
decompression. See pages 49, 57 and 58.
Recommended response of the diver
During the dive:
Observe the new decompression prescription shown by Aladin
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.
After the dive:
Watch for symptoms of arterial gas embolism and decompression sickness.
Seek immediate medical attention at a recompression chamber should any
signs or symptoms of decompression sickness appear.
Before the next dive, plan a sufficiently long interval (display <Atn> should have
disappeared).
An excessive ascent rate can lead to serious injury or death from decompres-
sion sickness.Failure to seek IMMEDIATE treatment for any signs or symptoms
of decompression sickness after a dive may result in serious injury or death.