Q9

A diver plans to make three dives using minimum surface intervals. The dives are:

10 meters for 90 minutes

34 meters for 10 minutes

16 meters for 55 minutes

 Put the dives in proper sequence and calculate the total time including safety stops. You may ignore ascent times

b)   253 minutes

34 meters for 10 minutes give us PG G
Must do safety stop for 3 minutes
Minimum surface interval is 0:32 which results in PG C
Dive to 16 meters for 55 minutes gets us into PG X
Must do a safety stop for 3 minutes
Minimum surface interval is 1:00 due to special rule which results in PG I
Dive to 10 meters for 90 minutes gets us into PG V
No safety stop required

10+3+32+55+3+60+90 = 253

Q10

PLEASE USE THE E-RPDML

What is the NDL for 19 meters?

a)    56

b)   72

c)    45

d)   37

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