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The Recreational Dive PlannerPowerPoint Presentation

The Recreational Dive Planner

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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

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

Sample Problems - Table 2

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

:55

P

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

Sample Problems - Table 2

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

4:00

P

Sample Problems - Table 2

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

4:00

P

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

ANDL = 26

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’

50

ANDL = 30

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

RNT = 33

22

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

RNT = 63

17

Drawing the Dive Profile

- Avoid confusion and make sure you don’t 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

Planning Multiple Repetitive Dives

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

1:00

M

D

S

40’

50’

25

RNT

Depth

Depth

+60

+ABT

40

60

85

TBT

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

Planning Multiple Repetitive Dives

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

:24

U

O

X

50’

55’

47

RNT

Depth

Depth

+30

+ABT

50

30

77

TBT

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

Minimum Surface Interval

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

Q

1:21

C

60’

60’

RNT

Depth

Depth

+

+ABT

40

40

TBT

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

Minimum Surface Interval

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

:11

S

P

40’

50’

RNT

Depth

Depth

+

+ABT

60

70

TBT

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.

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