Technical information

4 Functions during the dive

III UWATEC

Aladin

ONE

4.6 Ascent rate

Optimal ascent rate varies depending on depth between 7 and 20 m/min (23

and 66 ft/min). It is displayed in the lower right corner as a percent of the

reference variable ascent rate.

If the ascent rate is greater than 100% of the set

value, the black arrow "SLOW" appears.

Reduce ascent rate.

If the ascent rate exceeds 140%, the arrow "SLOW"

starts flashing.

Reduce ascent rate.

The prescribed ascent rate must be observed at all times! Exceeding the pre

scribed ascent rate can lead to microbubbles in the arterial circulation which

can lead to serious injury or death due to decompression sickness.

• In case of an improper ascent Aladin

ONE may require a decompression stop

even within the no-stop phase because of the danger of microbubble formation.

• The decompression duration necessary for the prevention of microbubbles can

increase massively if the ascent rate is exceeded.

• From great depth a slow ascent may cause heightened saturation of tissues

and an extension of both decompression duration and total ascent time.

At shallow depth, a slow ascent may shorten the decompression duration.

• Display of the ascent rate has the priority over "CNS O

• Excessive ascent rates for longer periods are entered in the logbook.

WARNING

DEPTH

NO STOP

DIVE TIME

Ascent rate

WARNING

The following ascent rates correspond to the 100% value in Aladin

ONE.

depth (m) <6 <12 <18 <23 <27 <31 <35 <39 <44 <50 >50

speed (m/min) 7 8 9 10 11 13 15 17 18 19 20

depth (ft) <20 <40 <60 <75 <88 <101 <115 <128 <144 <164 >164

speed (ft/min) 23 26 29 33 36 43 49 56 59 62 66