World's deepest pool to open in Poland
cnn.com
cnn.com
Challenges are probably not so big once the thing is constructed. External earth and groundwater pressure offsets internal water pressure I would assume and the real challenge is actually designing for when the thing is empty so that it doesn’t fail due to external loads.
Lots of this is dependent on geology of the adjacent soil and geometry of the hole. Pictures seem to show sheet piles so we know it’s soil.
Example for the town: Mszczonów -> Mshchonooff (Americanized).
sz ~= sh in English
cz ~= ch in English
w == v
There's no i after m, and ó makes oo sound.
Mishchonoof
? Trying to see if I remember my Polish..
The "v" at the end can get devoiced to "f" in casual speech, but people don't think of it as "f", because in other forms of the word, where it has postfixes - it still has to be pronounced as "v".
It's a little like "speakin'" vs "speaking".
— Grzegorz Brzęczyszczykiewicz
I guess it must just be really expensive to build and maintain a pool this big.
As noted in the article, there is already a pool (Y-40) that is 40m deep.
You can take a deep diving course if you like, but not everyone bothers. Going below 130 though becomes a technical and very complex endeavour quickly.
People imagine that diving training agencies has police power to allow or forbid you to do something. That's not true.
When you get a certification, the agency certifies that you have been trained to go to 18m. That's all it does.
After the training you can do whatever you want. But if you're not stupid and don't want a quick death or a painful life (wheelchaired due to bends), you will stay within the limits of your training.
So it's not only a recommendation, but at the end it works like one.
I'm pretty sure it changed.
Back when I did PADI OW on Grand Cayman in the early 90s, I did the course under a course director (apparently some sort of god within the hierarchy according to another instructor I chatted with years later). We learned that 40m was the limit and went down that far.
It's only years later on 'refresher' courses that I've learned both that I wasn't officially qualified to dive beyond 18m (being an OW only, not AOW), and that 30m is considered the recreational limit these days, with 40m as a sort of hard limit. In the 90s and early 00s I did deep dives, wreck dives, cave dives and all sorts on the basic qualification! Always with instructors, but still... I feel both privileged and hugely underqualified to have done that cenotes dive on the yucatan peninsula...
I've done a deep-dive speciality and an enriched air speciality since then. I must get my Advanced one of these days!
Did you do proper cave dives? I've only did caverns (within site of daylight) in the cenotes, which was enough of a thrill for me.
It was stunning, we swam through some huge, completely submerged caverns, and through some small connecting passages with submerged limestone cavern features. We also surfaced in a bat cave at one point on the first dive. This was somewhere around Playa Del Carmen.
Just happy I was young enough at 22-ish not to really think about the risks :)
I recall when doing my original SSI Open water cert in Croatia (max should be 18m), the instructor took us to 33m, it was maybe 4th dive in the course (and in my life). I was a bit worried and showed him the depth meter, he just signaled back OK, so I went along (like I could do anything else at that moment).
When training for Advanced OW, or diving after I obtained it in various places, nobody cares about precise limit (should be cca 30m for SSI IIRC), generally 35-40m is the limit for real dives.
At least they all rigorously follow decompression stops on a way up, wrist computers help greatly with more precise measurements. You just need to stick to +- same depth as instructor, not be constantly 5m below him chasing creatures.
That pool is going to be a part of larger aqua park located 5 km away from Mszczonów, in Wręcza village.
Other deep pools are:
* Nemo 33 in Brussels, Belgium
* Y-40 "The Deep Joy" in Padua, Italy
Now we just need a good scuba diving park and there's no need to visit the coasts ever again!
Word is that they're going to start opening up reservations for full-day events, sometime this year. Maybe $30k for the day (but that's just a guess). One wave every four minutes. 7 hours in the day. You can bring a dozen friends and surf until your arms (and legs, because the rides can be a full minute long) are noodles. Or you can bring 30 friends and still get eight or ten waves for the day.
After being lucky enough to tag along to a group that surfed there last year, I've spent a ridiculous amount of time thinking about what my income level would have to be for the $30k to seem like a "reasonable" outlay, once a year. The answer is "a lot lower than is sensible." It's a clean, head-high face, a super-fast down the line wave, and two legit barrel sections. Better than the best waves anywhere on the California coast outside of a handful of days a year.
Of course, $30k is just the entry level option. They are starting to think about licensing the plans and tech. For maybe $10M you could build your own! (No idea what it costs to run it per year.)
There are “wave gardens” in other places too, one in England and one in Spain I think. But I still haven’t figured out how to visit any of them...
But thanks a lot for the info, now it makes more sense!
Probably will be corrected soon, but pretty amazing how sloppy copy editing is on one of the largest news sources.