the recreational dive planner

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.