The Recreational Dive Planner

1
The Recreational Dive Planner

• Instructions for Use
• Jane E. Spencer
• MSDT 45434

2
Sample Problems - Table 1

• A dive to 43 feet for one hour yields what
  pressure group?

43
60
3
Sample Problems - Table 1

• A dive to 43 feet for one hour yields what
  pressure group?

S
43
60
4
Sample Problems - Table 1

• A dive to 28 feet for 70 minutes yields what
  pressure group?

28
70
5
Sample Problems - Table 1

• A dive to 28 feet for 70 minutes yields what
  pressure group?

N
28
70
6
Sample Problems - Table 1

• A dive to 60 feet for 40 minutes yields what
  pressure group?

60
40
7
Sample Problems - Table 1

• A dive to 60 feet for 40 minutes yields what
  pressure group?

Q
60
40
8
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?

32
J
9
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?

32
J
E
10
Sample Problems - Table 2

• A diver in pressure group P will be in what
  pressure group after a 55 minute surface interval?

55
P
11
Sample Problems - Table 2

• A diver in pressure group P will be in what
  pressure group after a 55 minute surface interval?

55
P
F
12
Sample Problems - Table 2

• A diver in pressure group I will be in what
  pressure group after a surface interval of four
  hours?

400
P
13
Sample Problems - Table 2

• A diver in pressure group I will be in what
  pressure group after a surface interval of four
  hours?

400
P
A
14
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
15
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
ANDL 26
26
16
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
17
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
50
ANDL 30
30
18
Sample Problems - Table 3

• If youre in pressure group M after a surface
  interval, what is the residual nitrogen time if
  youre planning a repetitive dive to 60 feet?

M
60
19
Sample Problems - Table 3

• If youre in pressure group M after a surface
  interval, what is the residual nitrogen time if
  youre planning a repetitive dive to 60 feet?

M
60
33
RNT 33
22
20
Sample Problems - Table 3

• Following a surface interval, youre in pressure
  group T. What would be your RNT for a repetitive
  dive to 50 feet?

T
50
21
Sample Problems - Table 3

• Following a surface interval, youre in pressure
  group T. What would be your RNT for a repetitive
  dive to 50 feet?

T
50
63
RNT 63
17
22
Drawing the Dive Profile

• Avoid confusion and make sure you dont miss
  steps.

Surface Interval between dives (hours and minutes)
Pressure Group after Surface Interval
Pressure Group after Dive 1
Pressure Group after Dive 2

RNT
Depth
Depth
ABT
TBT
Bottom Time
Bottom Time
Find the RAT!
Dive 1
Dive 2
23
Planning Multiple Repetitive Dives

• Indicate the final pressure group upon surfacing
  after the following series of dives.

100
D
M
S
40
50
25
RNT
Depth
Depth
60
ABT
40
60
85
TBT
24
Planning Multiple Repetitive Dives

• Indicate the final pressure group upon surfacing
  after the following series of dives.

24
50
55
RNT
Depth
Depth

ABT
50
30
TBT
25
Planning Multiple Repetitive Dives

• Indicate the final pressure group upon surfacing
  after the following series of dives.

24
O
U
X
50
55
47
RNT
Depth
Depth
30
ABT
50
30
77
TBT
26
Minimum Surface Interval

• Find the minimum surface interval required to
  complete the following series of dives.

60
60
RNT
Depth
Depth

ABT
40
40
TBT
27
Minimum Surface Interval

• Find the minimum surface interval required to
  complete the following series of dives.

C
Q
121
60
60
RNT
Depth
Depth

ABT
40
40
TBT
28
Minimum Surface Interval

• Find the minimum surface interval required to
  complete the following series of dives.

40
50
RNT
Depth
Depth

ABT
60
70
TBT
29
Minimum Surface Interval

• Find the minimum surface interval required to
  complete the following series of dives.

11
P
S
40
50
RNT
Depth
Depth

ABT
60
70
TBT
30
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

31
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.