Oceanic 04-8792-49 Scuba Diving Equipment User Manual


 
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OCi OPERATING MANUAL
© 2002 Design, 2013 Doc. No. 12-5335-r01 (6/27/13)
ADDITIONAL INFORMATION PERTAINING TO FREE DIVE MODES
Although breathing apparatus is not utilized for FREE Dive activities, nitrogen tissue loading remains a factor. Nitrogen loading,
which is utilized while in FREE mode, is calculated based upon a fixed FO2 of AIR.
Since a user has the option of alternating between NORM (SCUBA) and FREE dive activities within a 24 hour period, nitrogen
calculations and the displayed value of No Deco Dive Time Remaining (NDC Time) are carried over between the NORM and FREE
operating modes, which permits the user to maintain awareness of nitrogen absorption and offgasing status.
The mathematical models currently used in the OCi are based on no decompression/decompression multilevel repetitive
dive schedules. These algorithms do not take into account the physiological changes associated with the high pressures that
competitive type Free diving can expose a diver to.
WARNINGS
Ensure that you know which Operating Mode is selected (NORM, GAUG, FREE, or TECH FREE) prior to commencing any dive.
Conducting Free dives within a 24 hour period after conducting SCUBA dives, combined with the effects of multiple rapid Free
Dive ascents, increases your risk of decompression sickness. Such activities may result in accelerated entry into decompression
which could cause serious injury or death.
Combining competitive type Free dive activities that involve multiple descents/ascents with activities utilizing SCUBA during the
same 24 hour period is not recommended. Presently, there is no data relating to such activities.
It is highly recommended that anyone planning to become involved in competitive type Free dive activities obtain proper
instruction and training from a recognized Free Diving trainer. It is imperative that the physiological affects be understood and
the diver is physically prepared.