PADI RDP Table and ERDPML Exam – Imperial Questions And Correct Answers (Verified Answers) 2026/2027

PADI RDP Table and ERDPML Exam – Imperial
Questions And Correct Answers (Verified
Answers) 2026/2027

I dive to 59 feet for 22 minutes. After a 30 minute surface interval, I plan to dive to
50 feet. What is the maximum allowable time for the second dive? - CORRECT
ANSWER -61 Minutes -


Using the Dive Planning mode on the eRDPML, enter No for Multilevel Dive, enter
Yes for First Dive, enter 59, hit enter after seeing NDL, enter 22 minutes for ABT -
pressure group is H. Enter the surface interval - 30 - the new pressure group is D.
Enter next depth - 50ft - the ANDL is 61 minutes.Using RDP Table 1 find the next
greatest depth on the top row - 60ft - and follow the column down to the next
greatest time - 23 - go across to find pressure group H. In RDP Table 2, follow H to
find 30 minutes (between 29-37 minutes) and follow that column down to
pressure group D. Go to RDP Table 3, follow the depth - 50ft - across to meet D.
The number in the blue box - 61 - is the allowed bottom time.


I am planning to make two dives. The first dive is to 60 feet for 45 minutes, and
the second dive is to 60 feet for 35 minutes. How long would I have to stay on the
surface (minimum surface interval) to do these two dives safely? - CORRECT
ANSWER -1 hour and 4 minutes -


Using the Surface Interval mode on the eRDPML, enter Yes for First Dive, enter
60ft, hit enter after seeing NDL, enter 45 minutes for ABT. Enter second depth of
60ft, hit enter after seeing NDL, enter second time of 35 minutes - the minimum
surface interval is 1 hour and 4 minutes.Using RDP Table 1 find the depth on the
top row - 60ft - and follow the column down to the next greatest time - 47 - go
across to find pressure group S. On RDP Table 3, follow the 60ft row across until

, you find a time in the blue box equal to or greater than 35 minutes - follow this up
to pressure group F. Go to RDP Table 2, follow the F column up from the bottom
until it meets the S row - the minimum surface interval is 1 hour and 4
minutes.See the RDP/eRDPML Instructions for Use booklet


I dive to 56 feet for 47 minutes. After a 30 minute surface interval I do a second
dive to 56 feet. Losing track of time, I notice my bottom time is now 25 minutes.
According to the General Rules, what should I do? - CORRECT ANSWER -Ascend
(go up) right away to 15 feet and stay there for at least 8 minutes before going to
the surface, and not dive for six hours.


A group of Advanced Open Water Divers plans to make two dives. The first dive is
on a reef in 90 feet of water for 20 minutes. The group then remains on the
surface for 1 hour. The second dive is on a wreck in 60 feet of water, with a
planned bottom time of 30 minutes. What will be the ending pressure group after
the second dive? - CORRECT ANSWER -S -


Using the Dive Planning mode on the eRDPML, enter No for Multilevel Dive, enter
Yes for First Dive, enter 90ft, hit enter after seeing NDL, enter 20 minutes for ABT -
pressure group is M. Enter the surface interval - 1 hour - the new pressure group is
D. Enter next depth - 60ft, enter 30 minutes for ABT - pressure group is S.Using
RDP Table 1 find the depth on the top row - 90ft - and follow the column down to
the next greatest time - 21 - go across to find pressure group M. In RDP Table 2,
follow pressure group row to find 1 hour and follow that column down to pressure
group D. Go to RDP Table 3, follow D down to meet the 60ft row. The number in
the white box - 16 - is the residual nitrogen time. Add this time to the bottom
time: 16 + 30 = 46. On RDP Table 1, follow the 60ft column down to the next
greater time - Pressure Group is S.