Exactly. Although there is an argument for always doing it the same way because once you get out of class and use more than bottom gas and O2,something can and will happen eventually.
"I was taught in C2 that switches on and off bottom stages did not have to be watched, because after all, it was all the same gas."
I had the same instructor, and that definitely was not the case back in 2003. We watched all switches as a team.
I would say this was certainly the case on some of the earlier HID lights. You never really wanted to turn them off during the dive for fear they would not re-strike. Some of the newer lights with digital ballast strike more easily and can be shut on and off repeatedly in a short period of...
To be fair, the cord out pic wouldn't matter anyway as it appears to be centered in the lid. Some of the older lights were that way. The newer lights are so thin you have to offset the cord and the switch.
I doubt it really matters that much. I know I have never turner my primary off...
We were taught light cord against body to protect it. Switch on the outside.
As in a couple of hard to see pics on this page.
Equipment Configuration | Global Underwater Explorers
If I recall correctly you can add to that the use of helium should reduce cooling as well due to Joule-Thomson (i.e. helium heats up as it expands unless below ridiculously low temps).
I see it weekly during class with new students. Too tight is not good. These students generally think tighter is better so they really crank down which results in distortion of the skirt. I even demo to these people that mask straps are not necessary to keep the mask sealed. Assuming a...
I find most leaks are either related to a poor fitting mask or the straps being too tight which distorts the skirt. With a proper fitting mask, the mask will generally stay on underwater without straps until you equalize that space.
That's all good until you end up with a TSA moron (happened on the return from Puerto Rico) that flat out refuses and makes you go back to check them at the front counter. Funny. We never seem to have that problem flying out of Indy.
Neither would I.
The problem is under the AOW system you have been involved in, there really isn't any significant progressive practice during the AOW class. It's strictly an introductory class. Let's face it, most are probably just out of OW in these parts. I would never even consider...
Why 80 ft? Why not over 100ft?
I did all my AOW at BS as well. My instructor was about the farthest thing from lazy you will find. Actual depth in class has little to do with it. It's the skills and planning you learn as well as the perils and pitfalls one is taught about deep diving that...
The highest I ever saw was about 1 foot over the road at the first set of docks on the haul road going into the quarry. That was back in 2000 if I recall correctly. The max depth then was around 56 ft which put the water level about 4 ft over the normal depth. How is this level in comparison...
Based on the OP information, waiting for DEMA is not a good idea if it involves SP. As far as I recall, SP did not conduct repair tech classes at DEMA. I don't think they even attend anymore. They had some seminars in the past, but that is not the same as certification which is usually over a...
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