Scuba Diving BC what is a

i would like to no what it is and how 2 use it and what does it do plz

BC stands for "buoyancy compensator". It plays a few roles: - keep the diver afloat when at the surface - control buoyancy when underwater - supports the air tank it is actually an air bladder with a harness that is worn by divers. a hose connects the BC to the air tank so it can be inflated and deflated. you will learn how to use it if you go for an open water diver course.

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ok so recently i was helping my friend move and she is a trained licensed scuba diver or wait she in training rite now and we were talking about her scuba tanks and i was like hey those kinda look like to large paintball co2 tanks and she was like ya basically there just filled with co2 and i was like what that cant be right bc u cant really breathe carbon dioxide bc its an exhaust of your body converting oxygen to carbon dioxide basically when you breathe oxygen your body takes it and converts it to co2 when exhaled and i was thinking that it was probably kinda like the same as the atmosphere filled in them i think the atmosphere is like 72 percent nitrogen and 22 percent oxygen or somthing like that and the other stuff that in it and i researched it and basically thats what it was filled with and i told her u cant breath pure carbon dioxide and thats what causes sideaches when your running and not exhaling the co2 fast enough so basically what im saying is are her scuba takes filled with co2 or oxygen and nitrogen???

SCUBA tanks are filled with the same air you breath every day. The air is pulled from the surrounding environment and compressed by a compressor and runs through filters that clean it and dry it. Over the past 20 years, there has been more interest in Nitrox which is merely air with extra O2 added, but you need additional training to use this mix as O2 is toxic at the deeper depths and adding a higher concentration of o2 changes the partial pressure in the mix. There are also different decompression profiles that must be adhered to. It's main use is to decrease decompression time when doing deeper diving profiles. Profiles above the o2 toxicity depths. Less N2 in the mix means less buildup of the inert gas in your cells, therefore, less hang time required to off gas to safe levels before reaching the surface. When the diving gets really deep, one must go to tri-mix that use He to decrease N2 or Heliox that completely replaces N2.

I was just curious. My boyfriend is interested in diving and has been for years, but he does not own a BC and mentioned getting one. I was wandering what the best brand/make was. I know its different for every person. But I was hoping to get a good idea of what to go with. I hear the Mares Dragons are good and the Oceanic Probe. Anyone have any advice on any other BC's or comments on those?

To be honest, a BC is a super-personal thing - like buying a pair of jeans. My BF bought me a new BC for Xmas last year, it's not the kind I would have picked out but now I'm kinda stuck with it. It'll be fine, but, I wish he'd just given me a gift card. My recommendation: get a gift card, or talk to your dive center about their return policy. I don't want to not answer your question, so here are some factors to consider: Does your boyfriend dive in cold water or warm water? If he likes to dive on vacation only, go for a lightweight travel BC such as the Aqua Lung Zuma. Most major manufacturers have a travel-style BC, so ask your local dive shop what they carry. The lightweight BC is important because baggage fees are so expensive these days. For a cold water diver, you want something sturdier with more "lift." Lift is important because in cold water you wear a thicker wetsuit (or dry suit) and need more weight to compensate. A scrawny travel BC won't get the job done. For cold water diving: Aqua Lung's Balance BC is popular with many men, as is the Scubapro Knighthawk. Both of these BCs have been around for ages (with continued upgrades). They are like the F150 and Ford Ranger of BCs. The companies really have the design right and you see a lot of guys diving these (especially instructors - always a good sign because this means they last a long time and are comfortable). If your boyfriend does both types of diving, I'd go with the Balance or Knighthawk. Better to have a BC that does more than you need - just in case. As for the Oceanic Probe and Mares Dragon, looks like both are in the same category as the Balance or Knighthawk. The Probe has a lot of "D-Rings" which is handy if your BF has a lot of gadgets (light, camera, compass, etc). IMHO it's nice to have D-Rings for these items rather than trying to shove everything in a pocket. The Mares has its trim weight pockets in the lower part of the BC - near the butt. That's a little unusual, but something I would want to try out. If the diver has big thighs or a little junk in the trunk this could help maintain a more streamlined position in the water. Some things I look for in a BC: * Carrying handle - usually plastic, sometimes a strap, always found in the back neck area. * An "Air 2" (usually an extra cost but a must-have) allows the diver to have a back-up breathing source * At least one large pocket. Two small pockets are no substitute. * Weight pockets that are easy to remove and replace (snap or very strong velcro - you don't want them falling out but you don't want to spend 10 minutes rethreading them) There's one last thing... There are two main differences in BC design: jacket (the air inflates all around you) and back-inflate (a bladder on your back inflates with air). Neither one is better, but divers typically prefer one over the other. I like a jacket inflate because I'm a small person and the way the jacket "hugs" me compensates for a bad fit. Other people hate this feeling because they feel squeezed. In my experience, guys prefer a back-inflate BC, but that's, like six or seven out of ten guys. Not everyone loves them. At the surface, when you're floating upright, a back-inflate tends to push you forward a little onto your face. That air bubble on your back? It wants to be on top. You don't get this with a jacket because the air surrounds you evenly. If you're interested in other dive gift ideas for divers, click the links below: http://www.padiinstructorinfo.com/2010/12/water-resistant-mobile-phone-and-other.html http://www.padiinstructorinfo.com/2008/11/scuba-diving-with-ipod-my-dream-has.html

my boyfriend and i are taking a vacation in july and want to get certified as scuba divers. What are some good places? Please name as many as you can think of. Also, pinching pennies isnt a huge priority. Also, i stress we are going IN JULY bc i know a lot of good places may not be ideal in july bc of weather conditions that month.

You're actually better off to get certified at home before your vacation. 1/ There are dive shops everywhere. You don't need to be near an ocean to learn to dive. 2/ If your local conditions are "cooler" water, that's actually good. You'll be a better trained diver than the person on that "resort course". In my experience, the Instructors are also usually better at home than at a resort destination. They will see you again, a resort Instructor won't. 3/ Training at home means that when you jump off the plane at your resort, you can go diving. Learning at the resort and you'll blow at least 2 days of your vacation in class and not heading out to the reef. 4/ Your instructors at home are fluent in your language. Not sort of fluent...they are fluent. 5/ The money you spend on your course stays in your economy, not some other country. The price is usually the same as well. That all said, and money no object, three destinations come in mind for Open Water students. A: Cozumel, off the east coast of Mexico. It's the northern extension of the world's second largest barrier reef system and is in a tourist safe region. B: The east coasts of Honduras and Belize. Both are dotted with dive resorts and are the main part of the second largest barrier reef. C: Sharm el Sheikh, in Egypt. Also a dive resort destination with a reef system Those are the most popular, followed by Thailand's Phuket areas, Bonnaire, Curacao, Turks and Caicos and if money really isn't a factor Australia's barrier reef. I can't vouch for Australia's weather patterns in July, but you'll just beat Hurricane season in the Carib with Bonnaire and Curacao being the safest bets.