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The Safety Stops are indicated by:
• STOP label, when in the depth range 3 m - 6 m [10 ft - 20 ft] =
Recommended Safety Stop Countdown
• STOP+ CEILING label, when in the depth range 3 m - 6 m [10 ft - 20 ft] =
Mandatory Safety Stop Time display
• STOP label, when deeper than 6 m = Mandatory Safety Stop scheduled
3.2.1. Recommended Safety Stop
With every dive over 10 meters the instrument has a three minute countdown for the
recommended safety stop, to be taken in the 3 - 6 meter [10 ft - 20 ft] range. This is
shown with the STOP sign and a three-minute countdown in the center window instead
of the no-decompression time (Fig. 3.9.).
The Recommended Safety Stop, as the name implies, is recommended. If it is ignored,
there is no penalty applied to the following surface intervals and dives.
3.2.2. Mandatory Safety Stop
When the ascent rate exceeds 12 meters/min [40 ft] momentarily or 10 meters/min
[33 ft] continuously the micro-bubble build-up is predicted to be more than allowed for
in the decompression model. The Suunto RGBM calculation model responds to this by
adding a Mandatory Safety Stop to the dive. The time of this Mandatory Safety Stop
will depend on the severity of the ascent rate excess.
The STOP sign will appear in the display and when you reach the depth zone between
6 m to 3 m [20 ft to 10] also the CEILING label, ceiling depth and the calculated Safety