Quiz - Recreational Dive Planner™ - Pressure Group After Second Dive

[Pedro Burrito]

From the Recreational Dive Planner section of the PADI Dive Theory Exam. You will need your RDP™ to answer this question. You will get different pressure groups if you use metric or imperial!

A diver completes a 55 minute dive to 15 metres/50 feet and after waiting for 45 minutes on the surface makes a second dive to 13 metres/46 feet for 45 minutes. What is the diver's pressure group after the second dive?

a. Metric M - Imperial O

b. Metric L - Imperial I

c. Metric Y - Imperial W

d. Metric V - Imperial X


I will post a daily question from my exams to help newer divers and to encourage more experienced divers to interact gracefully and helpfully with the newer divers.

Reminder - this is a post in the Basic Forum and it is a green zone. Please be nice and on topic.

 

[ToneNQ]

misread, but alas there are no second changes

 

[rhwestfall]

YIKES

 

[scubadada]

That's pushing it. Good time to have a computer, and to be diving nitrox

 

[CT-Rich]

I COULD do this but it seems like a lot work to find TWO different versions of dive tables I never use. Maybe later.

 

[scubadada]

I COULD do this but it seems like a lot work to find TWO different versions of dive tables I never use. Maybe later.

You only need to run one, imperial OR metric

 

[rhwestfall]

I do like my Wheel for these...

(NAUI even made a similar one, not for Multi-Level like the PADI Wheel, but a math free device. It was very helpful for my dyslexic daughter to complete the tables portion and dive planning section of her training.)

So much has changed with the prominence of the PDC, yet I still use it for quick analysis or roughing out things.

YMMV

 

[-JD-]

OK, first in with Metric vs Imperial for conservatism ...

Trying not to give any spoilers, but 9-10 minutes (13%ish ) of calculated difference in bottom time on the second dive to get the same PG outcome between metric and imperial is ... remarkable.

 

[rhwestfall]

The scattering of answers so far on this one is interesting....

 

[HKGuns]

It is good to be with the majority.