Lake divers checkout dive?

[Jaydubya]

If you truly think quarries are easy, I'd be glad to take you down to 60+ ft (42 degree water) in 1- 2 ft vis. (on a good day). Sure, there is no currents, but the cold water & low vis can make for a pretty hostile environment. I personally will not dive deep in a quarry without redundant air supply. I've experienced a free flow at depth & have had a buddy had the same happen.

Been there, done that. I've done a lot of quarry diving.

Furthermore, you are making a big assumption about the ocean diving I was referring to. Not all ocean diving is warm with good visibility. None of my quarry dives even comes close to this ocean dive: low 40s, less than 10ft vis, ripping current, 4 ft seas, twisted metal, unexploded ordinance, nets, fishing line, jelly fish, black tip shark, 110ft deep, the real possibility of becoming lost at sea, and all more than 2 hrs from the nearest medical care.

I stand by what I said.

 

[Muddy MO]

I've dove alot of lakes, quarries, and some oceans. The lakes/quarries tend to be colder, darker, and have extreme temperature changes. Lakes and quarries have timber and sometimes big timber. At any point in a dive on a lake you might instantly find yourself in a 0 viz situation just by descending a foot or two. I haven't seen that in an ocean yet nor have I dove 42 deg ocean water.

This time of year it is quite common in places to dive around here where the surface is 80+ deg and 60+ feet temps would be low50's to 40's.

With that said, I dont care which you learned in both have their pros and cons. You still need to learn and familiarize yourself with the location you are going to dive.

 

[Guba]

Been there, done that. I've done a lot of quarry diving.

Furthermore, you are making a big assumption about the ocean diving I was referring to. Not all ocean diving is warm with good visibility. None of my quarry dives even comes close to this ocean dive: low 40s, less than 10ft vis, ripping current, 4 ft seas, twisted metal, unexploded ordinance, nets, fishing line, jelly fish, black tip shark, 110ft deep, the real possibility of becoming lost at sea, and all more than 2 hrs from the nearest medical care.

I stand by what I said.

In the spirit of the OP's first post...

Pardna', someone new to the ocean would need a WHOLE LOT MORE than a "checkout dive" before entering the environment you are talking about. That is way above and beyond what the OP had in mind, I think.