The Way to Scuba Dive
Scuba Diving Adventuring
How To Buy Scuba Gear
Diving questions please help thanks.?
Hello everyone i went diving in Tenerife in the summer and i loved it so much. I love diving i love when you go down and see all the fish and sea creatures. I have a few questions which i would be very happy if answered.
1.) Dry suits do you stay warm in them.
2.) Why do divers use nitrous oxide in some dives can you please explain this.
3.) Is there anywhere on the internet where i can find lots of information on diving.
4.) Is it safe to buy second hand Scuba Gear.
5.) How do they measure a dry suit as i am very skinny etc and wondering would it be safe to buy a second hand one as i don’t know how to measure them.
I will pick best answer thanks.
First off, are you actually a qualified diver yet? You don’t sound like one. That aside, in answer to your questions…
(1) Drysuits insulate using a layer of air, as opposed to wetsuits, which trap a layer of warm water against the skin. Air is a better insulator than water, so using a drysuit means you will not get chilled as fast as you would with a wetsuit in the same water temperature–note that you will still chill though, unless you have some means of heating the drysuit.
(2) Divers don’t use nitrous oxide, they use ‘nitrox’ which is a breathing mixture of nitrogen and oxygen which has a higher percentage of oxygen (and hence less nitrogen) than normal air (which is approx. 21% oxygen and 79% nitrogen). This gives the diver more potential ‘no-stop’ time at a given depth than they would have with air, but restricts the maximum depth to which they can dive safely, according to the oxygen content (more oxygen => less depth).
(3) There are literally hundreds of websites with diving information–but as with everything online, some sites are more reliable and less biased than others. Most sites are run by dive centres as advertisements for their services, but there are also many blogs and discussion forums. Wikipedia’s factual info is generally reliable, and www.divernet.com is a (relatively) non-partisan website run by the publishers of the UK magazine DIVER.
(4) Buying second-hand gear is relatively safe if you know what you’re doing and trust the seller, but otherwise I wouldn’t advise it. Also, for essential life-support equipment (e.g. tanks, regulators, Bcds) I would only buy second-hand gear from a seller who could provide a detailed service history, e.g. a dive store selling off its old rental gear. And by the way, anyone willing to sell life-support Dive Gear to an uncertified diver is NOT trustworthy–no conscientious seller would do this.
(5) Drysuits count as life-support equipment, since they will be connected to your regulator and cylinder, and require training (and/or experience) to use safely, so point (4) applies. Buying new means that you can be (reasonably) sure that your Drysuit will work properly from the start.
NB drysuits don’t need to fit as snugly as Wetsuits, so an off-the-peg version may be fine, so long as the length is OK. Neoprene suits can be easily tailored for width. If finding a well-fitting suit is a real problem, there are several companies in the UK which build drysuits to order–a Google search will find them–and the company will specify which measurements they need from you.
If you have any further questions, feel free to mail me through Y!A
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