The Recreational Dive Planner Instructions for Use Jane 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’ 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 =

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’ 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’ RNT = 63

Drawing the Dive Profile  Avoid confusion and make sure you don’t miss steps. : Depth Bottom Time Depth Dive 1Dive 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 S RNT +ABT TBT 50’ 40 40’

Planning Multiple Repetitive Dives  Indicate the final pressure group upon surfacing after the following series of dives. :24 Depth RNT +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 X RNT +ABT TBT 55’ 50 50’

Minimum Surface Interval  Find the minimum surface interval required to complete the following series of dives. : Depth RNT +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 RNT +ABT TBT 60’ 40 60’ 40 +

Minimum Surface Interval  Find the minimum surface interval required to complete the following series of dives. : Depth RNT +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 RNT +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.