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Idle Banter For non SV and non bike related chat (and the odd bit of humour - but if any post isn't suitable it'll get deleted real quick). There's also a "U" rating so please respect this. Newbies can also say "hello" here too. |
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11-02-15, 09:59 AM
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#111 | |
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Noisy Git
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Join Date: Apr 2007
Location: Halifax/Leeds
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Re: Any qualified scuba divers out there?
Quote:
 (probably more than you need to know for open water course, but nobody ever died of too much information) Work it through in stages. Pressure at depth in bar is (metres of water/10) + 1 = ? Multiply by Surface Air Consumption = litres per minute at depth Gives how many litres total? (maths is much easier if you find anyone talking about feet of water, psi or lbs then punch them square on the nose cos this isn't 1957)
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11-02-15, 06:42 PM
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#112 |
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Join Date: Feb 2011
Location: Ipswich, Suffolk
Posts: 818
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Re: Any qualified scuba divers out there?
54 litres per minute at 20m?
(20/10)+1=3 3x18=54
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Flickr https://www.flickr.com/photos/39887875@N06/ Last edited by Kenzie; 11-02-15 at 06:43 PM. |
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11-02-15, 06:56 PM
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#113 |
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Member
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Join Date: Feb 2009
Location: Ruislip
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Re: Any qualified scuba divers out there?
If you've got a 15l tank, then 1 bar from the tank provides you with 15 litres of air. So divide your air consumption by the tank capacity to work out how many bar you consume per minute from the tank.
Once you've got the hang of this calculation you can do it for every part of the dive to work out whether you have enough air in the tank for your planned dive. |
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06-04-15, 11:55 AM
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#114 |
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Member
Join Date: Feb 2011
Location: Ipswich, Suffolk
Posts: 818
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Re: Any qualified scuba divers out there?
Does anyone know what the rules on dive knives are? As I understand it you are not allowed to carry a knife without good reason. I'm talking about the pry tip type. The other option is shears or a z-knife.
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06-04-15, 01:49 PM
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#115 |
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Member
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Join Date: Jul 2003
Location: South London
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Re: Any qualified scuba divers out there?
I can't remember exactly, but it's something like sub-3 inch folding blade for UK legal carry, however owning and using of any knife is still legal, it just has to be carried in such a way that access isn't easy , so packet away, in a locked bag or something along those lines when on the way to or from a dive site, but if in doubt ask at your local old bill shop.
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Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming, 'Wow! What a Ride! |
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19-04-15, 04:49 PM
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#116 |
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Member
Join Date: Feb 2011
Location: Ipswich, Suffolk
Posts: 818
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Re: Any qualified scuba divers out there?
Just completed module 3 of the training. Just the second dvd to go then we can book our confined water course.
Sent from my Kindle Fire
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11-05-15, 12:59 PM
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#117 | |
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Noisy Git
Mega Poster
Join Date: Apr 2007
Location: Halifax/Leeds
Posts: 26,645
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Re: Any qualified scuba divers out there?
Quote:
More knives and cutters the better... knifes are useless for monofilament...
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Currently Ex Biker
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11-05-15, 01:50 PM
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#118 |
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Member
Join Date: Feb 2011
Location: Ipswich, Suffolk
Posts: 818
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Re: Any qualified scuba divers out there?
I wish. Got to have an op of my upper jaw which involves the sinus cavity. It will be six months to a year before it fully heals.
Sent from my Xperia T
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12-05-15, 08:32 AM
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#119 | |
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Join Date: Feb 2009
Location: Ruislip
Posts: 1,131
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Re: Any qualified scuba divers out there?
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12-05-15, 05:48 PM
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#120 | |
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Noisy Git
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Join Date: Apr 2007
Location: Halifax/Leeds
Posts: 26,645
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Re: Any qualified scuba divers out there?
Quote:
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