SUUNTO Vyper - Manual (Page 25)

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3.2.5. Decompression dives
When your NO DEC TIME becomes zero, your dive becomes a decompression
dive, i.e. you must perform one or several decompression stops on your way to the
surface. The NO DEC TIME on your display will be replaced by an ASC TIME
notation and the maximum depth will be replaced by a CEILING notation and
an upward pointing arrow (Fig. 3.16).
WARNING!
DECOMPRESSION DIVES ARE NOT RECOMMENDED! Decompression
diving limits the divers ability to ascend directly to the surface and may sub-
stantially increase the risk of decompression sickness.
However, if through carelessness or emergency you are forced to exceed the no-
decompression limits on a dive, the dive computer will provide decompression
information required for ascent. After this, the instrument will continue to provide
subsequent interval and repetitive dive information.
Rather than requiring you to make stops at fi xed depths, the dive computer lets
you to decompress within a range of depths (Continuous Decompression).
The ascent time (ASC TIME) is the minimum amount of time needed to reach
the surface in a decompression dive. It includes:
• the time needed to ascend to the ceiling at an ascent rate of 10 m/min
[33 ft/min]
plus
• the time needed at the ceiling. The ceiling is the shallowest depth to
which you should ascend
plus
• the time needed at the Mandatory Safety Stop (if any)
plus
• the recommended 3 minute Safety Stop
plus
• the time needed to reach the surface after the ceiling and safety stops
have been removed.