Post on 21-Jan-2016
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The Recreational Dive Planner
Instructions for UseJane E. Spencer
MSDT 45434
Sample Problems - Table 1
A dive to 43 feet for one hour yields what pressure group?
43’
:60
Sample Problems - Table 1
A dive to 43 feet for one hour yields what pressure group?
43’
:60
S
Sample Problems - Table 1
A dive to 28 feet for 70 minutes yields what pressure group?
28’
:70
Sample Problems - Table 1
A dive to 28 feet for 70 minutes yields what pressure group?
28’
:70
N
Sample Problems - Table 1
A dive to 60 feet for 40 minutes yields what pressure group?
60’
:40
Sample Problems - Table 1
A dive to 60 feet for 40 minutes yields what pressure group?
60’
:40
Q
Sample Problems - Table 2 After a dive you are in pressure group J. What
will your new pressure group be after a 32 minute surface interval?
J :32
Sample Problems - Table 2 After a dive you are in pressure group J. What
will your new pressure group be after a 32 minute surface interval?
J :32 E
Sample Problems - Table 2 A diver in pressure group P will be in what
pressure group after a 55 minute surface interval?
P :55
Sample Problems - Table 2 A diver in pressure group P will be in what
pressure group after a 55 minute surface interval?
P :55 F
Sample Problems - Table 2 A diver in pressure group I will be in what
pressure group after a surface interval of four hours?
P 4:00
Sample Problems - Table 2 A diver in pressure group I will be in what
pressure group after a surface interval of four hours?
P 4:00 A
Sample Problems - Table 3 If you are in pressure group K after your
surface interval, and you are planning a dive to 60 feet, what is your adjusted no decompression limit?
K
60’
Sample Problems - Table 3 If you are in pressure group K after your
surface interval, and you are planning a dive to 60 feet, what is your adjusted no decompression limit?
K
60’
29
26 ANDL = 26
Sample Problems - Table 3 After a surface interval you are in pressure
group P and planning a dive to 50 feet. What is your adjusted no decompression limit?
P
50’
Sample Problems - Table 3 After a surface interval you are in pressure
group P and planning a dive to 50 feet. What is your adjusted no decompression limit?
P
50’
ANDL = 3050
30
Sample Problems - Table 3 If you’re in pressure group M after a surface
interval, what is the residual nitrogen time if you’re planning a repetitive dive to 60 feet?
M
60’
Sample Problems - Table 3 If you’re in pressure group M after a surface
interval, what is the residual nitrogen time if you’re planning a repetitive dive to 60 feet?
M
60’
33
22 RNT = 33
Sample Problems - Table 3 Following a surface interval, you’re in pressure
group T. What would be your RNT for a repetitive dive to 50 feet?
T
50’
Sample Problems - Table 3 Following a surface interval, you’re in pressure
group T. What would be your RNT for a repetitive dive to 50 feet?
T
50’
63
17 RNT = 63
Drawing the Dive Profile Avoid confusion and make sure you don’t miss
steps.
:
Depth
Bottom Time
Depth
Dive 1 Dive 2
Pressure Group after Dive 1
Surface Interval between dives (hours and minutes)
Pressure Group after Surface Interval
Pressure Group after Dive 2
Bottom Time
RNT
+ABT
TBT
Find the RAT!
Planning Multiple Repetitive Dives Indicate the final pressure group upon
surfacing after the following series of dives.
DM 1:00
Depth Depth
S
RNT
+ABT
TBT
50’
40
40’
60
25+60
85
Planning Multiple Repetitive Dives Indicate the final pressure group upon
surfacing after the following series of dives.
:24
Depth DepthRNT
+ABT
TBT
55’
50
50’
30
+
Planning Multiple Repetitive Dives Indicate the final pressure group upon
surfacing after the following series of dives.
OU :24
Depth Depth
X
RNT
+ABT
TBT
55’
50
50’
30
+3047
77
Minimum Surface Interval Find the minimum surface interval required to
complete the following series of dives.
:
Depth DepthRNT
+ABT
TBT
60’
40
60’
40
+
Minimum Surface Interval Find the minimum surface interval required to
complete the following series of dives.
CQ 1:21
Depth DepthRNT
+ABT
TBT
60’
40
60’
40
+
Minimum Surface Interval Find the minimum surface interval required to
complete the following series of dives.
:
Depth DepthRNT
+ABT
TBT
50’
60
40’
70
+
Minimum Surface Interval Find the minimum surface interval required to
complete the following series of dives.
PS :11
Depth DepthRNT
+ABT
TBT
50’
60
40’
70
+
Special Rules Flying after diving – wait 12 hours or for
repetitive dives and/or multiple days wait 18 hours (suggested)
Cold – add 10 feet 1000’ altitude limit for RDP Safety Stop – always do a safety stop A Safety Stop is REQUIRED for dives 100’
plus or within three letter groups of NDL, or NDL
Ascend no faster than 60 feet per minute
Emergency Decompression If a no decompression limit is exceeded by
no more than 5 minutes, an 8 minute decompression stop at 15 feet is mandatory. Upon surfacing the diver must stay out of the water for at least 6 hours.
If a no decompression limit is exceeded by more than 5 minutes a 15 foot decompression stop at 15 feet is urged (air supply permitting). Upon surfacing the diver must remain out of the water for at least 24 hours before making another dive.