do desaturatiom time in scubapro extender mean no fly?
455507
If you have a question about the function of your dive computer, the BEST place to find an answer is the manual for that computer.\n\nAs far as I remember from the older UWATEC comp models, desat and no-fly time are displayed separately, one labelled "desat" and the other with a little aeroplane icon. But don't quote me!\n\nIf you're not sure (or the computer doesn't have a way to show no-fly time), the best is to err on the side of caution, and take desat time as your no-fly limit.\n\nMy SUUNTO computer only shows no-fly time on demand (usually around 12-16 hours after a couple of gentle recreational dives), but can take anything up to 48 hours to "desaturate" completely (which it doesn't tell me anything about).\n\nREMEMBER - your dive computer is only a tool, and doesn't actually measure anything that's going on in your body - it's making a "best guess", based on your dive profile(s) and its software.\n\nFYI: Industry standard guidelines for flying after diving:\n- after one dive in a day, wait 12 hrs minimum\n- after two dives in a day, wait 18 hrs minimum\n- after multiple dives in a day, wait 24 hrs minimum\n- after two or more days of diving, wait 24 hrs minimum\n\n- after you've done something extreme (accidentally or deliberately!), waiting significantly more than 24 hrs would be a VERY good idea
251634
Background: Although decompression sickness (DCS), a complex resulting from changed barometric pressure, includes high-altitude–related and aerospace-related events, this article focuses on decompression associated with the sudden decrease in pressures during underwater ascent, usually occurring during free or assisted dives. People involved with tunneling projects and those in submarines during emergencies may also experience the physiologic effects of decreased pressure brought on by such ascents. \n\nSince 4500 BCE, humans have engaged in free (breath-hold) diving to obtain food and substances from shallow ocean floors at depths of 100 or more feet. The 1994 record-setting breath-hold dive of Ferreras-Rodriguez to 417 feet attests to this human feat. Humans began experimenting with crude diving bells as early as 330 BCE. These bells were submerged containing only air. In 1690, the first diving bell with a replenishing air supply was tested. The first crude underwater suit dates back to 1837, and helium was first used in place of nitrogen in 1939. \n\nAll these early diving methods required a physical connection to a support platform or boat. The Aqua-Lung, developed by Cousteau and Gagnon, and the submarine escape appliances, developed by Momsen and Davis in the 1930s, were forerunners of the Self Contained Underwater Breathing Apparatus (SCUBA), which frees divers from the limitations of tethering. \n\nThe increasing popularity of scuba diving and the growth of commercial diving have increased the frequency of deep-pressure injuries. Even in regions far from coasts, individuals are diving in quarries, lakes, rivers, and caves. In addition, the ability to travel rapidly between areas of disparate altitudes in a matter of hours (including the exacerbation caused by decreased pressures in flight) increases the chance of experiencing decompression injuries. Emergency physicians worldwide should know the physiologic effects and management of decompression sickness.\n\n\nPathophysiology: Changes in pressure affect only compressible substances in the body. The human body is made primarily of water, which is noncompressible; however, the gases of hollow spaces and viscous organs and those dissolved in the blood are subject to pressure changes. Physical characteristics of gases are described by the following 4 gas laws, which quantify the physics and problems involved in descending under water.
1185855
well its free so it prolly gonna suk a lil\nand 6 hours holy might be yer puter  is it slow?\ni use ImTOO and ImTOO mov converter\nfree on torrent sites
77685
I did a Yahoo Search for airspeed of a swallow and found a whole bunch of stuff on this.  Seems that all of the titles say "unladen".\n\nIncluded are quintessential articles such as:\n"Estimating the Airspeed Velocity of an Unladen Swallow"\nhttp://www.style.org/unladenswallow
188594
I'm also amazed at the answers including the preceding one. It's true it's all about bouyancy. But is bouyancy affected significantly by the dissolved oxygen in the tissues? According to the ref., bouyancy is just about lung capacity, bone, fat and muscle ratios. And of course the salinity of the water. Also, panic-induced body tension can reduce lung capacity and muscle performance.  \nAnyway, a change in tissue oxygen level would happen slowly; it's a diffusive process. Second, the density difference of water with and without dissolved oxygen has to be minute since oxygen is only sparingly soluble.
412358
You could skip the Nitrogen Oxide and use Nitrous Oxide.   :o)
530371
No, any air put into her lungs at any depth would cause an Aretial Gas Embolism. An air bubble would go straight into her bloodstream and spell certain doom. So for your own personal referrance never ever take a breath off a scuba regulator if you are freedivng (holding your breath from the surface). The difference in pressure even 6 ft cold be fatal.
48981
SCUBA stands for self contained underwater breathing\napparatus. It uses a tank of compressed air that the divers inhale just like as if they were out of the water. A one way valve then allows them to exhale through the mask. The oxygen levels in the tanks is determined by the depths to which they are diving.
313719
First off, I'm assuming you mean breathing through a scuba regulator or snorkel.  Otherwise, I'm impressed. ;)\n\nWater, because the molecules are more dense than air, can transmit the compression wave of sound better, which would be why you can hear all sounds better.
8909
No, because the pressure at the surface will be less than 1 atm (or 1013 hPa). Pressure drops with altitude at a 100 hPa / 850 m ratio. Hence, if you dive at 1000 mt above sea level, pressure would be 778 hPa, = 0,77 atm at surface instead of 1 atm. Most diving computers have specific settings to calculate bottom times when diving at high altitudes. Check out a diving manual.
299063
Please.  Your lungs can not be down as much as 3 feet I believe, or the air would be forced out of your lungs.  Now if you snorkel at normal depth, you can hold your breath and go down as far as you can make it.  But you can't breath continuously unless the air is being pumped.  Your head will not collapse, it's filled with liquid which doesn't compress.
970721
No, no sky diving this weekend. And sorry, but if I do, I will not be driving down to PA. We have it 5 minutes away were I live. Thanks anyway for the invite.
113154
don't dive with scuba without training - it could possibly kill you - it is not pure oxygen. The air mixture of the normal surface air becomes deadly if you go too deep, and lots of other problems can happen also, like it you come up too fast from very deep, your body could literally explode. once you are trained, you will learn to deal with the ear thing very easily\nthe first answer is from a schmuck that heard about scuba but never learned it
1078421
Don't add any more.  In 3 days it will reduce itself.  Take the floating chlorinator out of the pool.
689078
Yes, commercial oilfield divers regularly work at that depth and deeper. It has become fashionable for amatuer scuba divers to exceed 300' also, though the equipment and minimal back-up they have make this a risky enterprise.\n\nRight now, as you read this there will be an oilfield diver working offshore Brazil in 1,400... yes 1,400 feet of water!
528197
is this for holding your breath?? \n\nThe technique used by the record deep divers is to bring their heart rate down to 10 beats per min, by meditating and relaxing all their muscles\n\nHow you do it? it takes a looot of practice.. I have done relaxation exercises and have gotten my heart rate to under 30.. but those guys are crazy
1090027
At 26 my personal best was just over 4 min.  I was free diving 5 or 6 days a week and that is not an average time.  While I was practicing with other people who were new to it I would say the average 25 y/o would start looking uncomfortable at 45 sec. to 1 min. but could hold on till about 1:15 to 1:45.  Over 2 min is good, over 2:30 is very  good and over 3 min is awesome.