THE SOLUTION
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SHOWS YOU THAT DECOMPRESSION IS REQUIRED!
Note the upward pointing arrows.
The ascent time (ASC TIME) is the minimum amount of minutes 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 to reach the surface after the ceiling has been removed.
WARNING!
YOUR ACTUAL ASCENT TIME MAY BE LONGER THAN DISPLAYED ON THE
SOLUTION
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.
The ascent time will increase if you:
- remain at depth
- ascend slower than 10 m/min [33 ft/min], or
- make your decompression stop deeper than at the ceiling.
These factors will also increase the amount of air required to reach the surface.
WARNING!
NEVER ASCEND ABOVE THE CEILING!
You must not ascend above the ceiling. In order to avoid doing so by accident, you
should stay slightly below the ceiling.
Ceiling, Floor, and Decompression Range
When in decompression, it is important that you understand the meaning of ceiling,
floor, and decompression range:
- The ceiling is the shallowest depth to which you should ascend when in
decompression. At this depth, or below, you must perform one or several
decompression stops. All decompression stops must be performed at or below the
ceiling depth.
- The floor is the deepest depth at which decompression takes place.
Decompression will start when you pass this depth during your ascent.
- The decompression range is the depth range between the ceiling and floor. Within
this range, decompression takes place. However, it is important to remember that
the decompression will be very slow at or close to the floor.
The depth of the ceiling and floor will depend on your dive profile. They will be fairly
shallow when you enter the decompression mode, but if you remain at depth, they
will move downward and the ascent time will increase. Likewise, the floor and ceiling
