NSDS diving course is among the hardest to pass in the DF, they are very fit and very well trained
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Originally posted by expat01 View PostIndependent reporting divers are limited to 9 minutes on the wreck and other sources say it's at 40 meters.
Which makes sense as 9 minutes is the no deco limit at 40m on air. For civilians.
No in-water decompression in those swells makes sense, but no nitrox, or no chamber on board....dammit we need to up our game.
10min max dives, diving in pairs.Last edited by sofa; 25 March 2017, 21:58.
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Which means they are either using air, or working to quite conservative limits with nitrox.
That might make sense. If there is a strong current and swell getting to, keeping on station and working outside the wreck would be hard.
After that productivity depends on how many pairs, each having a total dive time of around 16-17 minutes and requiring 3 hours off between dives. You'd need 20 divers to enable you to work for three hours before the first pair go back in the water, but I doubt they have a big window of weather and daylight
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I don't think daylight is an issue affecting dives at present. At that depth surface lighting conditions will mean nothing on the seabed anyway. ROV can provide all the seabed light you need.Dives are being carried out by a combination of naval and garda divers. Not sure if Gardai work with Nitrox. Seems that NS are doing the recovery while Garda continue the area search. Is it too deep for diving with surface supply?
The recent book on the NS diving unit did reveal their limitations at depth.For now, everything hangs on implementation of the CoDF report.
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Interesting, I must look for that book on NS diving.
I don't want to second-guess these guys. I haven't dived past 60 myself and I'm more comfortable at a limit of 40 because I'm not trimix qualified. Some of my mates were assisting on a series of sub-100 metre trimix dives to film coelacanths a few years ago and it almost started to look routine...if you accept death at any time as part of your routine. Two of them died during a 60 metre dive - one of literally hundreds they'd done - just a year later.
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Originally posted by expat01 View PostInteresting, I must look for that book on NS diving.
I don't want to second-guess these guys. I haven't dived past 60 myself and I'm more comfortable at a limit of 40 because I'm not trimix qualified. Some of my mates were assisting on a series of sub-100 metre trimix dives to film coelacanths a few years ago and it almost started to look routine...if you accept death at any time as part of your routine. Two of them died during a 60 metre dive - one of literally hundreds they'd done - just a year later.
For now, everything hangs on implementation of the CoDF report.
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RIP'He died who loved to live,' they'll say,
'Unselfishly so we might have today!'
Like hell! He fought because he had to fight;
He died that's all. It was his unlucky night.
http://www.salamanderoasis.org/poems...nnis/luck.html
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RIP"He is an enemy officer taken in battle and entitled to fair treatment."
"No, sir. He's a sergeant, and they don't deserve no respect at all, sir. I should know. They're cunning and artful, if they're any good. I wouldn't mind if he was an officer, sir. But sergeants are clever."
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