3.3.3 Ascent Rate Indicator
The ascent rate is shown graphically with a pointer in
the upper left corner, next to the notation ASC RATE,
as follows:
Ascent rate
Ascent
Example in
indicator
speed
Fig. no.
No segments
Below 5 m/min
3.8
[16 ft/min]
Segment one
5 – 7 m/min
3.9
[16 – 23 ft/min]
Segment two
7 – 9 m/min
3.10
[23 – 30 ft/min]
Segment three
9 – 11 m/min
3.11
[30 – 36 ft/min]
Segment four
Above 11 m/min
3.12
[36 ft/min]
Blinking SLOW
Above 10 m/min
3.12
[33 ft/min]
The SLOW warning alternates with the current
depth. The SLOW warning is an indication that the
maximum ascent rate has been exceeded continuous-
ly, whereas the ascent rate indicator shows present
ascent speed.
Whenever the SLOW warning appears, you should
immediately slow down or stop your ascent until the
warning disappears. You must not ascend shallower
than 3 m [10 ft] with the SLOW warning on. If you
reach this depth with SLOW on, you must stop at
this depth and wait until the warning disappears.
18
Figure 3.9 Reverse
No-Decompression Time
Bar Graph
The first bar from the left
appears when the avail-
able no-decompression
time decreases below 60
minutes. The following
bars appear when the
available no-decompres-
sion time decreases below
40, 30, 20 (green zone, a)
and 10 minutes (yellow
zone, b).
NO DECO
MAX
DIVE TIME
A 1
A
m
S
C
S
P
E
E
D
HIS
LOG
ALT
SET
PLAN
b
a
Figure 3.10
Dive Planning
Pointer at position two:
ascent rate 7 – 9 m/min.
(23 – 30 ft/min.)
NO DECO
MAX
DIVE TIME
A 1
A
m
S
C
S
P
E
E
D
HIS
LOG
ALT
SET
PLAN
WARNING
RAPID ASCENTS INCREASE
THE RISK OF INJURY!
Do not exceed the maximum recommended
ascent rate.
!
!
