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Old 19 January 2012, 07:50   #31
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The RN "one only" survival suits have ties around the legs to help prevent air ending up in the wrong place once you've abandoned ship.
Implemented after the Falklands War IIRC.
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Old 19 January 2012, 11:08   #32
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Good point, when wearing a PFD / BA it does fit very tightly round the chest so does stop excess air getting to the torso of the suit
No it won't. You'd have to crank the straps down to where you couldn't breathe to get the straps to stop airflow. The air will find its way through the smallest fold in the suit material, and flow through the fabric of your clothing. It won't have any problem getting through the restriction imposed by a PFD over the outside.

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Old 19 January 2012, 11:18   #33
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Attachment 64993

Look no adipose.

Holy God! I turn my back for three days and you're impersonating the young Keith Chegwin. What next?
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Old 19 January 2012, 11:51   #34
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Holy God! I turn my back for three days and you're impersonating the young Keith Chegwin. What next?
Now i thought that he was chubby
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Old 19 January 2012, 12:18   #35
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I see my photos got deleted
But on a serious note what effect will the new and old Gecko helmet have on a person in the water.
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Old 19 January 2012, 17:42   #36
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I see my photos got deleted
But on a serious note what effect will the new and old Gecko helmet have on a person in the water.
Old square shape large size weighs with visor 668 grams.
Mk 10 large size with visor , no inflation bladder 674 grams and seems to float just slightly better.

Think one big inversion risk is when you may get a young smaller person using a drysuit a few sizes too big perhaps and having no life jacket on ,
Inverted the legs could generate more buoyancy than the torso.

Also for those that use a membrane suit for swimming ashore or out to the boat say with no PDF just using the suits bouyancy if the latex neck seal tears your going to loose air and fill up quick.
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Old 20 January 2012, 09:58   #37
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"On this note, I am qualified "
as what exactly MrP ??
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Old 20 January 2012, 10:00   #38
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What are we saying then ?? that, when wearing a dry suit that has not been vented, it is a "myth" that you will end up inverting and possibly drown, or it's a "fact" that you will ??
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Old 20 January 2012, 10:07   #39
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Now i thought that he was chubby
He is, but he still looks better than you with no clothes on......allegedly
WARNING NOT FOR THE FAINT HEARTED OR WEAK OF STOMACH.

There's a joke in there somewhere about Kaiser Kerny & sausages, but for the life of me I can't dig it out
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Old 20 January 2012, 11:02   #40
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Quote:
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What are we saying then ?? that, when wearing a dry suit that has not been vented, it is a "myth" that you will end up inverting and possibly drown, or it's a "fact" that you will ??
Having owned a dive shop with two schools attached too it and been a commercial diver I think I can probably make a guess at the right answer.
Unless you're deformed you should float with shoulder and legs on the surface. If you shift or try to turn over the air can go to your arse so you can float face down. You will panic quick enough to lift your head and float upright.
The easiest thing to do as suggest is squat with your fingers in your neck seal. You don't want excess air in the suit if your wearing a life jacket
When you're diving air shift to legs can be a problem in the not so well trained and I've seen uncontrolled accents from depth and it ain't pretty.
Just get the air out to be on the safe side

sent from a remote device
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