Study Guide
1. I dive to 59 feet for 22 minutes. After a 30
61 minutes
minute surface interval, I plan to dive to 50
feet. What is the maximum allowable time
for the second dive?
1 hour and 4 minutes
2. 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? Ascend (go up) right away
to
3. I dive to 56 feet for 47 minutes. After a 30
minute
surface interval I do a second dive to 56 feet. Losing 15 feet and stay
there for at
track of time, I notice my bottom time is now 25 min- least 8
minutes before going
utes. According to the General Rules, what 30 minutes.
should I do? What dive
profile would
4. A group of Advanced Open Water Divers we use when
plans to make two dives. The first dive is on a planning our
reef in 90 feet of water for 20 minutes. The dive?
group then remains on the surface for 1 hour.
The second dive is on a wreck in 60 feet of 6. I am an
water, with a planned bottom time of 30 Advanced
minutes. What will be the ending pressure Open Water
group after the second dive? Diver. I plan
to do three
5. My buddy and I are planning to dive at a dives. The
site where the water and air temperature are first dive is an
near freezing. We plan to dive to 60 feet for 80 foot dive
1/
3