SUUNTO D9 User Manual
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STEP 1: Assess the situation calmly and then move promptly to less than 18 m
[60
ft].
STEP 2: At 18 m [60 ft], slow down your ascent rate to 10 m/min [33 ft/min] and
move to a depth between 3 and 6 meters [10 to 20 ft].
STEP 3: Stay there as long as you assess your air supply will safely allow. After
reaching the surface stay out of the water for at least 24 hours.
1.1.2. DIVE COMPUTER LIMITATIONS
While the dive computer is based on current decompression research and technology,
you must realize that the computer cannot monitor the actual physiological functions
of an individual diver. All decompression schedules currently known to the authors, in-
cluding the U.S. Navy Tables, are based on theoretical mathematical models, which
are intended to serve as a guide to reduce the probability of decompression illness.
1.1.3. NITROX
Diving with nitrox provides the diver with an opportunity to increase bottom times or
reduce the risk of decompression illness by reducing the nitrogen content in the bre-
athing gas mix.
However, when the gas mix is altered, the oxygen content of the mix is generally in-
creased. This increase exposes the diver to an oxygen toxicity risk not usually con-
sidered in recreational diving. In order to manage this risk, the dive computer tracks
the time and intensity of the oxygen exposure and provides the diver with informati-