Cave Certs Expiration

[rjack321]

Ok, well I'm at a loss to which agencies DO have expiring certifications currently. The CDS say they have done away with them. I don't recall NACD having any.

Sorry I don't know all the status now in 2016.
Apprentice used to expire but I don't know which agencies did that, maybe IANTD?

 

[syntaxerrorsix]

I tell them... they are certified to specified depth... I also tell them they are adults (unless they aren't) and if they choose to dive deeper that it's on them.... but I highly suggest an advanced or deep class if they want to dive deeper.... not that the class gets them anything but the chance to do a deeper dive with someone who already has that experience. I don't think that standard carries as much weight as 3rds... Oh did I mention I teach my OW students the rule of 3rds.... I would much rather them get back to the boat with 1000 psi in their tanks than 250 psi..... let everyone else make fun of them... THEY HAD AIR TO SPARE... and didn't need SPARE AIR...

What do you mean it doesn't get them anything?

It teaches them how much faster they use up air, the possibility of narcosis, less time at depth due to deco obligations, it teaches them ALL SORTS of things. It allows them to practice under qualified leadership and allows them to gain experience.

That's the WHOLE POINT IN CERTIFICATION COURSES.

 

[syntaxerrorsix]

Sorry I don't know all the status now in 2016.
Apprentice used to expire but I don't know which agencies did that, maybe IANTD?

The CDS Apprentice use to be good for 18 months.

 

[rjack321]

pretty sure that is the same with back mount... my point was... I have two pressure gauges and can tell you where my breathing gas is just by looking.

The most common issue is a reg failure.
Which makes 1/2 of a sidemount divers gas inaccessible
With a manifold they can't donate but 100% of the remaining gas is accessible.

You're advocacy for changing standards, combined with minimal cave training and experience, and lack of understanding about doubles is concerning. This is exactly why its important for divers to start in doubles, on large mainline passages, with limited penetrations 1/4ths or 1/6th or something much less than 1/3rds and no deco.

 

[syntaxerrorsix]

pretty sure that is the same with back mount... my point was... I have two pressure gauges and can tell you where my breathing gas is just by looking.

No, you can isolate and still have use of all the available gas.

 

[syntaxerrorsix]

The most common issue is a reg failure.
Which makes 1/2 of a sidemount divers gas inaccessible
With a manifold they can't donate but 100% of the remaining gas is accessible.

You're advocacy for changing standards, combined with minimal cave training and experience, and lack of understanding about doubles is concerning. This is exactly why its important for divers to start in doubles, on large mainline passages, with limited penetrations 1/4ths or 1/6th or something much less than 1/3rds and no deco.

Agreed.

 

[rjack321]

The CDS Apprentice use to be good for 18 months.

Glad that went away. I don't think that was a thoughtful "limit" on a certification.

 

[Imbodie]

What do you mean it doesn't get them anything?

It teaches them how much faster they use up air, the possibility of narcosis, less time at depth due to deco obligations, it teaches them ALL SORTS of things. It allows them to practice under qualified leadership and allows them to gain experience.

That's the WHOLE POINT IN CERTIFICATION COURSES.

They SHOULD already know deeper means faster air consumption... Open Water students don't learn about deco... IT DOES get them experience diving to depth with another experienced diver(which is what I said to begin with). All I feel that a deep or advanced course does is allow students to experience THOSE types of dives with someone experienced in those types of dives... NOT having to learn or experience them on their own... SO this conversation really doesn't apply to 3rds vs 6ths in a cave....

 

[syntaxerrorsix]

They SHOULD already know deeper means faster air consumption... Open Water students don't learn about deco... IT DOES get them experience diving to depth with another experienced diver(which is what I said to begin with). All I feel that a deep or advanced course does is allow students to experience THOSE types of dives with someone experienced in those types of dives... NOT having to learn or experience them on their own... SO this conversation really doesn't apply to 3rds vs 6ths in a cave....

PADI right?

 

[Imbodie]

The most common issue is a reg failure.
Which makes 1/2 of a sidemount divers gas inaccessible
With a manifold they can't donate but 100% of the remaining gas is accessible.

You're advocacy for changing standards, combined with minimal cave training and experience, and lack of understanding about doubles is concerning. This is exactly why its important for divers to start in doubles, on large mainline passages, with limited penetrations 1/4ths or 1/6th or something much less than 1/3rds and no deco.

So you are advocating that all DRIVERS learn on a motorcycle FIRST so that when they move to a car they understand the principles of riding a vehicle with only 2 wheels???
What happens when the dohicky in the middle has a failure?? (sorry... had to show my ignorance, I know its an isolation valve/manifold) Seems like then your going to have to turn both cylinder valves OFF and feather them to exit the cave...

In sidemount I should always have 2/3 of my gas available no matter which side has a failure.... and duh.. no I won't be able to donate... but then who in their right mind is going to help another diver when THEY are having their own issues...