DIR Ascent Protocol for Drift Dives in Heavy Current?

[JeffG]

So.. are you saying that if you don't have a scooter, a dive where drifting with the current is inappropriate is not a DIR option at all?

I'm not saying this is wrong. I can see the argument going, "What happens if you can't make it back onto the mooring line for some reason." This has happened to me when a large group silted out the bottom and I couldn't find the mooring block.

I deployed my SMB and drifted my ascent, and the boat did pick me up with no harm done. So you could argue that on every such dive drifting is a possibility whether you like it or not.

But I'm asking the question to understand what is and isn't proper DIR practice. Is there a DIR sanctioned protocol for a dive onto a moored wreck where a drift ascent is discouraged/prohibited/a bad idea?

Learning to dive on the internet is a bitch.

 

[Web Monkey]

How is this measured? Can you provide empirical evidence of this, beyond someone "Gosh that seems fast, I bet it's 3.5 knots AT LEAST!"

It's measured by how long you can hang on to the mooring line before you realize you actually need two hands and both arms are getting tired.

Terry

 

[Reg Braithwaite]

Learning to dive on the internet is a bitch.

What part of "no trolling zone" don't you understand?

Growing up and learning how to function as part of a social group is a bitch as well.

 

[JeffG]

What part of "no trolling zone" don't you understand?

Growing up and learning how to function as part of a social group is a bitch as well.

I understand it quite well.


Why don't you learn to read. The answer is there.

 

[rjack321]

But I'm asking the question to understand what is and isn't proper DIR practice. Is there a DIR sanctioned protocol for a dive onto a moored wreck where a drift ascent is discouraged/prohibited/a bad idea?

Which one of these is it? The answer is your gas plan and from that you can derive an ascent approach. You seemed to have drifted it just fine (at least once).

 

[shoredivr]

How is this measured? Can you provide empirical evidence of this, beyond someone "Gosh that seems fast, I bet it's 3.5 knots AT LEAST!"

I have a copy of Cris Kohl's "The Great Lakes Diving Guide". On pg 70 he states "the ever present variable current runs between 2.3 and 3.6 knots" regarding diving the Lillie Parsons. Pg 58 refers to 3 to 6 knots on The Eastcliffe Hall, which is right in the shipping channel: no drifting.

Here's another reference:
Le Fleuve

"In the river, current conditions can vary immensely, even from day to day for any particular site. This depends upon the amount of recent rain, storm conditions and the use of the dams in the river. There is negligible current in Lake Ontario. There are sites with zero current and others with strong current, > 4 knots. Famous strong current sites are Lilly Parsons, Lock 21, Daryaw and various river drifts."

It's well-known that there's heavy current in the St. Lawrence. Heck, even Jeff's been a flag on the Daryaw line.

I'm not sure what the number is...but its fast.

I did a dive on the Daryaw where we were flags on the mooring line. Absolutely no way to swim against the current.

Henry C. Daryaw - DiveSpot

 

[nilsdiver]

Learning to dive on the internet is a bitch.

Isn't that how you learned?

Oh - But your a cat...

You got 9 do-overs...

And you have a machine gun. woot...

 

[rjack321]

Famous strong current sites are Lilly Parsons, Lock 21, Daryaw and various river drifts."

Hey looky there even Kohl is hinting at a way. Maybe not the best, but a way nevertheless.

 

[shoredivr]

Well, rjack, c'mon up and dive the Eastcliffe Hall, the one in the shipping channel, let's see how drifting goes on that one. If it wasn't in the channel, drifting off it would make the most sense. The Coast Guard isn't amused when the channel needs to be shut down due to divers.

Having said that, drifting onto and off the Daryaw with a live boat is IMO the most fun ever.

Well, Reg Braithwaite, you got this forum moving today!

 

[Reg Braithwaite]

Reg Braithwaite, you got this forum moving today!

Using the internet on a dive is a bitch. No, wait, is it "never dive with bitchy interns"? I'm confused. Any ways, it's all fun and games here. Any friction can easily be explained by the narcissism of small differences. You get the greatest friction between the people who really have the most in common.