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Maggie’s Motivational Pic Thread v2.0 - - New Rules - See Post #1
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A easy yet firm, Hard Fuckin No !Trust me... as a cave diver myself (refer to my Avatar), that would never happen. Not for me, at least. When we do cave dives, we ensure that the cave is well scoped out in advance and lined properly. One of the very basic rules of cave diving is "Always keep a continuous line to open water This, so you can find your way back when it's time to turn back. We would already know where "Devil's U-Turn" is and how it works long before we entered it. And it it was way too tricky, we'd bypass it for a much safer route. Believe it or not, there is actually, a training cave (where newbie cave divers go to train) here in FL called "Devil's Den." Open water divers can also dive there as the entrance is big enough for them as well. But there are portions of it that are gated off with the infamous "grim reaper" sign attached to encourage you to stay out.
We would never (or should never) impose that kind of risk on ourselves and our families... if for no other reason than it also imposes the same risk to the rescue divers that have to come in behind us and recover the bodies. Perhaps an even greater risk. Not saying all cave divers are that "dedicated" to safety, but they should be.
I’ve done about a thousand dives, and I don’t mess with no caves. The only one I would do was near Wake Island. It was simply a large room, with one way in from the top. You had to remove your tank, slide through the hole, and your buddy would hand your tank to you through the hole. The thing was, the cave was FULL of lobster. When it was time for a beach party, head to the cave, fill up a bag or two, and feed twenty people a lobster dinner.
I thought that somebody who covered his women in flour so he could find the wet spot would have a better crack than that.
You get as many points for that as your old lady as teeth... (4).
If you follow all the rules, if you train properly, if you keep your equipment properly maintained and (most importantly) if you keep your ego/attitude in check at all times (i.e. don't do dives beyond your training/experience), you should be able to go home at EOD. It's that last part where which most "dead divers" have issues. I can cave dive as deep as 130ft and Open Water dive as deep as 150 ft, but no deeper for either unless/until I complete my mixed gas training. This is where you learn to dive with gas mixes that are less than 21% O2 (i.e. the % or "fraction of O2" (FO2) in the mix). And. mostly, you substitute that with Helium. So, the basic "Tri-mix" course trains you on 18% FO2, 35% Helium and the rest, compressed air. And that should get you down to about 218ft. There is also an "Advanced Tri-mix" course, where you use 10% FO2, 70% Helium and the rest as air. And that can get you closer to 300ft in depth, but only for a short time (like 9 min.). But you must also carry all the other mixes with you and change to/from a given mix as you descend and re-ascend. That 10-70 mix should be your main bottom mix. So, you have all these spare bottles with you. And, at certain depths, you switch to the next bottle and leave the one you were using at that depth for when you return to it on your "deco" schedule. But it all has to do with how your tissues absorb O2 and at what "partial pressure." Too much O2 at deeper depths can actually kill you as PP02 can be much greater than your tissues can absorb. You die from Oxygen Toxicity. Remember, as you dive deeper, the overall pressure on your body increases, thus increasing the PPO2 to your tissues. That's why 10% FO2 works at very deep depths but also why you should never breathe it unless you are at those depths. On the surface, you could get away with only 18% FO2 if you had to. Thankfully, it's more like 21% in regular air.
Trivia quiz: How deep can you go down on breathing pure 100% O2?
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Walter Tkaczuk's son/grandsons? Of course, Walter played for the NY Rangers when Eddie Giacomin was goalie.
I hold TDI and IANTD technical instructor certifications with all the specialties. All overhead environments present challenges, but there are plenty of very friendly caves and plenty of very deadly wrecks. There are seemly serene dives that are quite dangerous if you do not make the proper preparations. You can't blanket statement anything. You have to take into consideration tides, currents, entanglements and gear snags, seam squeezing, depth, visibility, temperatures, profiles, gas switches, all of it. Nothing is dangerous if you know what you are doing. Everything is, including a 20' reef dive in warm, clear water, if you don't. It's like anything else. Proper prior planning, emergency procedures, and keeping your cool.
Speaking only for myself, I'd rather dive an unmapped cave in Florida than many of the cold water, East Coast wrecks that are popular with the technical crowd like the Andrea Doria, The Oregon, and The San Diego. The Andrea Doria in particular is a mincer, and is dangerous as hell because of the depth (the good stuff is at the bottom), current, notoriously low visibility, and how many entanglements are lurking everywhere (including fishing nets and heavy commercial fishing lines from people fishing the wreck). I did it once, as a young man and don't care to do it as an old one.
Pure O2 is toxic below 3 meters. It's a brilliant shallow and still water deco gas, but scary to use and painful to breathe.
You might want to check your post - your Tri mixes, using air as a third gas, are a might O2 rich.
The usual approach is multiple mixes for serious depth or extended bottom time - travel, bottom and deco - in side-slung cylinders - or rebreather.
I have dove in the North Sea quite a bit. In addition to those concerns the sea state can change crazy fast and is less predictable than in many other places. I have gone out in a gentle swell, and come back hanging on for my life when the forecast did not call for it. You don't have the fast moving squall lines like we do, but that just means you have less heads up when a north wind decides it's going to triple in speed in an hour. That sort of diving is a young man's game for sure.
I’m sure many of these stories are true. I’m equally sure just as many are John Kerryish bullshit.
Go to a VFW or American legion, you'll see enough kerryish bullshit to make you not want to come back.
Between helicopter door gunners, lrrp, snipers and POWs, a liar doesn't have a chance in there.
I was there, and your statement is pretty accurate for a generality.
Tiger Force, 68/69.
Trust me... as a cave diver myself (refer to my Avatar), that would never happen. Not for me, at least. When we do cave dives, we ensure that the cave is well scoped out in advance and lined properly. One of the very basic rules of cave diving is "Always keep a continuous line to open water This, so you can find your way back when it's time to turn back. We would already know where "Devil's U-Turn" is and how it works long before we entered it. And it it was way too tricky, we'd bypass it for a much safer route. Believe it or not, there is actually, a training cave (where newbie cave divers go to train) here in FL called "Devil's Den." Open water divers can also dive there as the entrance is big enough for them as well. But there are portions of it that are gated off with the infamous "grim reaper" sign attached to encourage you to stay out.
We would never (or should never) impose that kind of risk on ourselves and our families... if for no other reason than it also imposes the same risk to the rescue divers that have to come in behind us and recover the bodies. Perhaps an even greater risk. Not saying all cave divers are that "dedicated" to safety, but they should be.
I've done a lot of cave dives and also some really deep trimix wreck dives. For those properly trained, cave diving is relatively easy as the risks and their solutions have been documented extensively. With maybe one exception I can think of (Parker Turner at Indian Spring), people don't die following the 5 basic cave diving rules.It's that simple for the trained.
Diving deep in the ocean is a different deal. Your path home is often not the same as the one that got you there, so you can't reliably stage extra gas. There are a lot of other variables that are not easily planned for. I decided that these dives were too risky and stopped doing them. My buddies went to rebreathers, which presented other risks I didn't accept. I had insane thrills on these dives and saw stuff that very few will ever see, but realized that sooner or later I'd either fuck up or run into a situation I couldn't deal with.
I'll cave dive until I can't strap on a set of doubles and have the cognitive ability to understand my gauges, instictively remember my training, and understand the line markers. I was trained by decent instructors, but later matured diving with some of the best in the world. I'm not in their class, but I've learned a lot, especially knowing when to turn the dive and try again tomorrow.
In the ocean, I've come to like single tank diving on pretty reefs in warm water. If you go out to the ledges near where you are IIRC, there are huge lobsters. On an overnight spearfishing trip, I remember getting one that weighed 8 lbs and having a feast on the boat that night. We'd go out from Little River but land our catch in Southport because of rules. Thinking of Southport, is Wayne Strickland still around? He was an avid wreck diver. Is his museum still there?
When I was 16, I played in the Metropolitan Ice Hockey Association for the West NY Vics Juniors. Kevin Flynn and I were the youngest (and smallest) members of the team. Most of the team members were from Hell's Kitchen and a pretty tough bunch. We had the opportunity to play a game in the Garden one Sunday before the Ranger game. Our locker room was next to the Rangers and after our game we were invited to their locker room and meet them. They were putting their pads on and I couldn't believe how big these guys were. They were really cool and shook hands with several of them including Tkaczuk and Rod Gilbert.
Speaking of Rod Gilbert, one day at practice one of my teammates whom I will not mention shows up completely decked out in Gilbert's No. 7 uniform. Evidently, when the Rangers were loading their gear bags on the bus for the airport, this unnamed individual seized the opportunity to avail himself to Gilbert's bag. Created quite a stir and a scramble to get new gear.
Let’s see, no defensible space, trees/bushes right up to/overhanging the building, looks like some of the trees are/were eucalyptus (oily torches), no roof top sprinklers or water tank, and the list goes on. Note the house in the upper left has a lawn (defensible space), tile roof and probably stucco walls and is still standing.
Yet I’ve also seen houses with the recommended precautions burn too. The fire, fuel, terrain, and wind ALL have a hand in it.
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The standard I used was whatever you need for the bottom, 50% nitrox or a trimix with 50% O2 at 70 ft and then O2 at 20 ft. You break to bottom gas regularly to keep from too much time at the 1.6 atm partial pressure. I run my bottom mix at 1.0-1.2 max pp, as I'm more afraid of O2 than of a few more minutes of deco.
"Oxygen is addictive and deadly, everyone who breathes it will eventually die." - Dr Bill Hamilton
Due to the risk of oxygen toxicity, a diver can only safely scuba dive to a very shallow depth when breathing 100% oxygen, typically around 13 feet (3.9 meters), as exceeding this depth can lead to seizures from central nervous system oxygen toxicity.
I work at a hospital, between that and 5 years in Afghanistan as a very low speed civilian I think I must have met every SEAL, delta Force and Recon guy to have ever done the job. It's weird how no one was ever a truck driver or cook..
3 meters - 10 feet
20 feet - 6 meters......
