Operation Manual

112
®
the basis of multilevel diving, one of the most important contribu-
tions the DataTrans Plus offers you. Take advantage of this fea-
ture and make all of your dives multilevel dives.
NO DECOMPRESSION LIMITS
Note how the No Decompression Limits for the DataTrans Plus
are contrasted with the U.S. Navy limits (Fig. 114). For most
depths, the DataTrans Plus provides somewhat less no decom-
pression times than the U.S. Navy Tables. However, while the no
decompression limits may be less, you will receive greatly in-
creased allowable bottom times as you take advantage of the mul-
tilevel dive capabilities offered by the DataTrans Plus. Notice
also that the DataTrans Plus Pre Dive Planning Sequence does
not scroll past 160 feet (48 meters).
REPETITIVE DECOMPRESSION DIVING
The decompression model used by the DataTrans Plus is based on
the no decompression multilevel repetitive dive schedules success-
fully tested by Dr. Ray Rogers and Dr. Michael Powell. These
tests did not include repetitive dives deeper than 90 feet (27
meters) or decompression dives. Due to the present unavailabil-
DataTrans Plus U.S.
Depth NDL-mins. Navy
feet (meters) Eng (Metric) NDL -mins.
30 (9) 260 (283) - - -
35 - - - - - - 310
40 (12) 137 (144) 200
50 (15) 80 (84) 100
60 (18) 57 (58) 60
70 (21) 40 (41) 50
80 (24) 30 (31) 40
90 (27) 24 (26) 30
100 (30) 19 (20) 25
110 (33) 16 (16) 20
120 (36) 13 (13) 15
130 (39) 10 (11) 10
140 (42) 9 (9) 10
150 (45) 8 (8) 5
160 (48) 7 (7) 5
170 (51) * * 5
180 (54) * * 5
190 (57) * * 5
[* The DataTrans Plus will not scroll past 160
feet (48 meters), or when projected bottom /de-
scent time is less than one minute.]
Fig. 114 - No Decompression Limits