AdivingBel
Diver
As we were heading back to the marina, one of the women asked me how I had known how to find the boat. I told them, and then I asked, "How were you doing it?" She said, "We were following you."
Been there...
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As we were heading back to the marina, one of the women asked me how I had known how to find the boat. I told them, and then I asked, "How were you doing it?" She said, "We were following you."
Sounds like a fairly typical warm water, rec wall dive. 3000 psi AL80. Dive to the wall. Drop to your max depth (70/80 ft.). Cruise along the wall until 1500 psi. Turn and ascend to 30/40 ft. or top of the wall. Work your way back to the boat. Paddle around under the boat. Surface with about 500 psi. 50/60 min. dive. Also works in Bonaire & Curacao with it's ubiquitous "swim to the drop," but usually with a longer dive time given overall shallower average depth and shallow swim out/in given it's a shore dive. Pretty standard in the Caribbean.
First establish the mgr for the dive profile then you'll know what's usable then apply the gas strategies. All usable , rule of halves or thirds and you might add for the environment and teammate experience.I have had several people, in two contexts, suggest that a turn or turnaround pressure of a 100 bar is a thing.
Does anyone have practical examples of when that would be the case in simple single tank diving?
In this case how is the turn pressure (being when the divers start to retrace) calculated? Is is it half of the available gas for the dive, ie start gas minus ascent reserve? And if so, to what degree do people assume this is half a cylinder?
And of course the picture may be different for a multilevel dive, such as a shore dive over a sloping bottom, or a wall dive.Usable gas for a 80 Bar rock bottom will be 120 bar, thus on a drift dive I start ascent at 80 bar. On a "nice to get back but not essential" dive I will turn at half usable so after consuming 60 bar, or a SPG reading of 140. On a "have to get back" dive I will turn after consuming 1/3 usable, or 40 bar used (160 SPG reading). Once I get back to the ascent point, I may spend a little time there until reaching rock bottom if that is desirable (swimming around the ascent line on the deck of the wreck for example).
It is a taught thing.Is it a taught thing or just a guide thing (50 out, 50 hanging about at the interesting features, 50 back, 50 to ascend sort of plan)?
What class is that?Two years later PADI produced a new OW diving class, and the rule of thirds was included both in the course curriculum and on the final exam.
What question on the final exam (A or B) references the rule of thirds?Two years later PADI produced a new OW diving class, and the rule of thirds was included both in the course curriculum and on the final exam.
They are called Distinctive Specialties. They are created by individual instructors and approved by PADI. There must be thousands of them around the world today.What class is that?
Edit: Nvm, I've just been looking at your website. How is there PADI courses that are created by you but aren't mentioned anywhere in PADI information?