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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? S 43’ :60 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? N 28’ :70 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? Q 60’ :40 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’ 50 30 ANDL = 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. Surface Interval Pressure Group after Dive 1 between dives (hours and minutes) Pressure Group after Surface Interval Pressure Group after Dive 2 : Depth RNT Depth +ABT TBT Bottom Time Dive 1 Bottom Time Dive 2 Find the RAT! Planning Multiple Repetitive Dives Indicate the final pressure group upon surfacing after the following series of dives. M 1:00 D 40’ 50’ Depth +ABT 25 +60 TBT 85 RNT Depth 40 S 60 Planning Multiple Repetitive Dives Indicate the final pressure group upon surfacing after the following series of dives. :24 50’ 55’ Depth RNT Depth 50 +ABT 30 TBT + Planning Multiple Repetitive Dives Indicate the final pressure group upon surfacing after the following series of dives. U :24 O 50’ 55’ Depth +ABT 47 +30 TBT 77 RNT Depth 50 X 30 Minimum Surface Interval Find the minimum surface interval required to complete the following series of dives. : 60’ 60’ Depth RNT Depth 40 +ABT 40 TBT + Minimum Surface Interval Find the minimum surface interval required to complete the following series of dives. Q 1:21 C 60’ 60’ Depth RNT Depth 40 +ABT 40 TBT + Minimum Surface Interval Find the minimum surface interval required to complete the following series of dives. : 40’ 50’ Depth RNT Depth 60 +ABT 70 TBT + Minimum Surface Interval Find the minimum surface interval required to complete the following series of dives. S :11 P 40’ 50’ Depth RNT Depth 60 +ABT 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.