Thistlegorm on air

[Boa Gialla]

Rubbish. The nitrox course can be easily done in about 2 hours on a boat journey to the site.

What about a trimix course? A couple of days?

A.

 

[buleetu]

is there any chance that a tank that isint analysed could have more oxygen in it then the 28% thats supposed to be in there and would have a shallower MOD because of it???

when people are mxing gas for nitrox tanks does this happen a lot?

whats the MOD of a 32 and 36 % mix?

also i didnt say i wouldnt be doing nitrox course, i said i was going on a short holiday and i wanted to dive the thistlegorm, it turned out the thistlegorm was closed to day boats without a license anyway because someone crashed a boat up onto the reef near to the site so only the bigger boats with gps are allowed to go there for the time being, something like that anyway, i will do a nitrox course when im ready to do it, i wanna do a load of dives as an openwater diver first before i go and do advance ow or nitrox, i think i will do nitrox first though

 

[Boa Gialla]

is there any chance that a tank that isint analysed could have more oxygen in it then the 28% thats supposed to be in there and would have a shallower MOD because of it???

Yes: couple of years ago, diving on the Thistlegorm, they gave me a 32% that, analyzed, was actually a 37%.

whats the MOD of a 32 and 36 % mix?

With the PpO2 = 1.4 the MOD(32%) is about 33 mt. and the MOD(36%) is about 28 mt.

also i didnt say i wouldnt be doing nitrox course, i said i was going on a short holiday and i wanted to dive the thistlegorm, it turned out the thistlegorm was closed to day boats without a license anyway because someone crashed a boat up onto the reef near to the site so only the bigger boats with gps are allowed to go there for the time being, something like that anyway, i will do a nitrox course when im ready to do it, i wanna do a load of dives as an openwater diver first before i go and do advance ow or nitrox, i think i will do nitrox first though

Sorry in advance if I didn't get something ('cause of my awful english): are you a Open Water Diver? The Thistlegorm is a wreck, in open sea, possibly with strong current, at a depth of 25-30 mt. and the need to do deco in the blue. IMHO, it's not so difficult, but in any case I'd rather avoid to guide people with few dives on such a site. Just my opinion, of course.

Ciao,
A.

 

[maged_mmh]

Yes: couple of years ago, diving on the Thistlegorm, they gave me a 32% that, analyzed, was actually a 37%.

:wow: were you OK with that?

 

[Boa Gialla]

:wow: were you OK with that?

Where's the problem? I used the 37% for the second dive, in the hold, at a max depth of 26 mt., and the 32% for the first dive (the bottom is about 32 mt.)

Ah: I analyzed both the tanks before the dive, obviously.

 

[maged_mmh]

Ok, but my experience so far that anything I analyzed was just within +/- a decimal fraction of the mix that supposed to be there.
my point was that cylinder wasn't correctly marked (maybe it was meant to be EAN36?

 

[Boa Gialla]

my point was that cylinder wasn't correctly marked (maybe it was meant to be EAN36?

Yes, I had the same idea: probably they filled for a 36%, but marked the tank with a 32%.

Errors can happen, that's why I always analyze the mix before dive. And that's why I'm not so sure that a 2-hours course can teach all these aspects.

Ciao.
A.

 

[Red Sea Shadow]

Errors can happen, that's why I always analyze the mix before dive. And that's why I'm not so sure that a 2-hours course can teach all these aspects.

In the past the course consisted of a couple of academic sessions and 2 practical dives. It was some kind of standard. Nowadays, some certification bodies still keep the same old standard (an example is CMAS). However, other certification bodies (including PADI) deducted the course to be just a couple of academic sessions without practical dives. That's why it's now doable over a 2 hours boat trip!

 

[rmarrash]

i will do a nitrox course when im ready to do it, i wanna do a load of dives as an openwater diver first before i go and do advance ow or nitrox, i think i will do nitrox first though

My wife and I took the exact opposite approach.

We got our OW and AOW "prior" to our first real dive trip and then got our Nitrox while on our first dive trip.

In my opinion it made our first dive trip better (we felt more prepared) and having the ability to dive on EANx32 all week was a added bonus.

As for getting the Nitrox cert in a 2 hour Window.... you guys must be really fast readers My wife and I spent ~3hours reading and doing the excercises and then spent another few hours with the instructor going through all of the stuff we read.

P.S. I am lurking in this forum because my wife and I are thinking about coming to dive in the Redsea in July and am trying to gather info on it

Russell

 

[Boa Gialla]

In the past the course consisted of a couple of academic sessions and 2 practical dives. It was some kind of standard. Nowadays, some certification bodies still keep the same old standard (an example is CMAS). However, other certification bodies (including PADI) deducted the course to be just a couple of academic sessions without practical dives. That's why it's now doable over a 2 hours boat trip!

Sorry, it's my fault. I don't know the PADI (etc.) standards for Nitrox courses.

Anyway I keep on considering that a good course deserves more time; but it's just a personal opinion.

Ciao, and please greats for me Shark&Jolanda, Jackfish Alley, Tiran and all the other wonderful sites I love.


A.