"Benzelbulb"? I think that you need to learn how to copy and paste on a computer before preaching tables.
Info Why are tables not taught in OW classes anymore?
- Thread starter tursiops
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Belzelbub
Contributor
I do agree, but I might have to qualify that. For me, it is obvious, but that may be because I originally learned to dive tables. For someone that learned via computer, it may not be as obvious. I still have tables, but only really for academic curiosity. If I want to see what the NDL is for a particular depth, I might just grab the table if I’m home. If not, I could just as easily access the Plan Dive app on my Garmin.
I’m not sure which would have locked it in quickest for me. I learned on tables and can appreciate them. I could also see the “Aha” moment when watching the NDL climb as I ascend. Everybody learns differently, so an instructor should consider all methods if a student is struggling to grasp the concept. I wouldn’t, however, assume that the instruction was insufficient just because tables were omitted.
In another thread, a member commented that tables were optional in the online learning, and not discussed by the instructor. That’s probably OK. What I found puzzling was that the instructor mentioned to the students that if they dive a lot, they should probably consider diving with a computer. If they weren’t taught to use tables, then there really is no other option.
Belzelbub
Contributor
Ya, I simply typed that one, and my mind didn't see "bub," and put in "bulb."That's what happens when you're 77 years old with blended trifocals.
John
PS, if you do a copy/paste, here's what you get:
Belzelbub
A link, not just a name.
That’s what you want. If you put a “@“ sign in front, “Benzelbulb” gets an alert that way.
... and here I thought you were a Devil worshiper ...
I completely agree. I would modify that instructor's comment to say that if the diver dove to a depth greater than 33 feet/10 meters, then a computer was necessary if not diving by the tables. The river I dive in a lot is at max depth 23 feet deep, and so while I dive a computer, I don't really worry about decompression at all.
Now, I did have one incident that made me think about computers. I dive in cool/cold water, with sometimes vintage gear. I was diving the Dacor Nautilus Constant Volume System (CVS) BCD, and with a vintage dive mask without optical devices that I need to see up close well. I looked at my computer, and didn't realize that it was reading very low psig, and because of the hood could not hear any warning buzzer. I actually ran out of air while in about 10 feet of water, surfaced and switched to my snorkel. When I realized I was out-of-air, I had a bit of a problem with the Dacor Nautilus CVS, as I needed to remove the water from it. Usually, that is done by opening the lower water intake valve, and then blowing the water out with air. I could not do that, so I simply got onto shallow water and, with that valve opened, stood up a bit and let the water drain out. That removed about 60 pounds of water from the unit.
Now, about the digital output. I have compared that computer digital output with the analog gauge output on most submersible pressure gauges, and the SPG output is much easier to read than a digital number on my Suunto Cobra. I don't know what the newer dive computers readouts look like, but take that into consideration when buying a new one.
SeaRat
Well, many of us--yourself included, I'm sure--memorized the "magic numbers" (you know, 60 for 60, 70 for 50, 80 for 40, etc.) a long time ago!
Of course, we still need the tables for the repetitive dive.
rx7diver
I just read this whole thing.
Seriously guys / one gal,....some moderator should end this. And the rest of yo all git a room and have some kind of beverage.
POST 598 makes the most sense of everything,.....I too have 60 /60 memorized, as well as 110 and 95,...
as previously been mentioned,....those that have these numbers memorized, recognize issues faster than those that don't. I suspect this latest most recent disaster , filmed in all its gory glories, should illustrate that having a computer is not the same as understanding what it is telling you.
Most disturbing of all of these posts is that, basically, very, very , few of you pointed out the fine print that exists on most of these tables. That being the Special Rules, and then the General Rules, (from the PADI recent rdp)
All roads lead to Rome. Learn the tables, "your a better mathematician because of this"
Learn the tables,...you will be better divers.
OP
There is a whole thread on the "rule of 120" and its variants. No need to repeat ie here.
The thread is about why tables are rarely taught in OW classes today. Thr bottom line is because tables are mostly for square profiles, and that is not the kind of diving most recreational divers do. Teaching tables is like drilling students on pulling the rod on a J-valve. We don't do that anymore.
What is your point about the rules?
The thread is about why tables are rarely taught in OW classes today. Thr bottom line is because tables are mostly for square profiles, and that is not the kind of diving most recreational divers do. Teaching tables is like drilling students on pulling the rod on a J-valve. We don't do that anymore.
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