Scuba

There is no legal weight restriction for SCUBA diving. You do however have to be in shape enough to pass the physical parts of the exam, which typically include a 200m swim in roughly 10 minutes, and a much longer swim over a longer period of time. Also, if you wear a wetsuit or a drysuit, you'll need more weight to achieve neutral bouyancy, which in turn wears you down some. Finally, fat absorbs more nitrogen than most other tissues, so deeper dives need to be approached more conservatively. Physical problems that do preclude diving are serious cardiovascular ailments (see your cardiologist about these), respiratory obstructions (COPD and the like), extreme clostrophobia (you can get over this but it's hard), badly damamged eustacian tubes or eardrums, any ailment that causes you to lose consciousness, and a few others. After all this grim stuff, I want to say don't lose heart -- I worked with an instructor who weighed about 400lbs and, while at the high end of the scale, performed excellently. [[User:Cjonb|Cjonb]] 22:35, 2 Jun 2008 (UTC)

If you are out on a boat when a storm approaches it is advised to get under it's cabin, and head to shore ASAP. If no cabin is available, it is recommended that you dive deep under water for the duration of the storm.

It is called a regulator. To be specific, the part of the regulator that goes in your mouth is called the second stage of the regulator.

The use of an oxygen analyzer would be advised. Most nitrox and technical divers have one.

Nitrogen

The dive flag(s) that alert surface traffic that there are divers below (also sometimes the "code alpha") can be one or two flags. The First flag you would always see (if a flag is flown at all) is the square, red flag with a diagonal white stripe down the center. One you may see accompany the red/ white flag is a blue and white striped pendant.

4.3 feet per minute

-20 - -63 = 43

43/10 = 4.3

Claustrophobia is the fear of small spaces or enclosed spaces. The sufferer is afraid they will be trapped somewhere and not able to get out safely.

The question is based on an incorrect assumption. The correct question is "Will a person become less buoyant as he swims deeper? Why or why not?" The answer is "it depends." If the person is freediving - yes. His lungs will compress and his volume will decrease while his weight remains constant. If the person is on SCUBA and assuming no exposure suit and correct weighting, no. On SCUBA, a person's lungs will not compress. His volume will remain the same. As he uses air, the weight of his system will decrease and he and his SCUBA unit will become more (not less) buoyant. If the person on SCUBA is wearing an exposure suit and/or is overweighted (requiring air in the BC), the suit and/or BC will compress and make the person less buoyant. Andy's answer is correct within the limits of the situation he describes. Because ambient pressure will increase with depth, decreasing the volume (and thus your bouyancy) of any air pockets present, whether in your BC or your wet suit Assuming the same volume of air in your BC at 50 feet and at the surface, at 50 feet that air will be compressed into a smaller volume, thus your bouyancy will be less than at the surface. If you ascend from 50 feet, that air will start to expand, increasing your bouyancy (and thus possibly leading to a runaway ascent) If you descend from 50 feet, that air will start to compress, decreasing your bouyancy (and thus possibly leading to a runaway descent) Buoyant force is the upward force on an object. I allows objects to float.

There are not any courses that would train you to dive this deep. Recreational divers are trained at depths up to 130 feet, over 5,000 feet short of your 1 mile mark. Tech divers are trained to dive deeper, however, the pressure of the water at the depth that you asked about would most likely cause severe bodily harm. In diving u shuld be comservative. If i can do or see what i can do or see at 15 metres, why go to 30?

No, but "scuba-diving" is a verb.

Sharm EL Sheik.

There boats cover a large section of the Red Sea including the Wreck of the Thistelgorm and the Ras Mohammed Marine park.

Hurgada is another possibility.

diver's short name or code for your 'average' dive trip on a dive boat - 2 dives, each separated by an approximate 1 hour SIT (Surface Interval Time), usually on 2 different dive spots.

"Bubbles, tiny bubbles". Not good for you and they can travel around before they reabsorb doing damage that is irreversible. This can be a bladder dysfunction, sexual dysfunction or muscular weakness. There may be permanent damage to the spinal cord.

Untreated joint pains that subside are believed to cause small areas of bone damage called osteonecrosis. There may be enough damage to cause the bone to become brittle or for joints to collapse or become arthritic.

12

If you get the bends you will get bubbles in your skin that are very painful and you may die from it. You will have to go into a special chamber for a good while to get your body used to the surface.

Divers (and others) call the compressed air cylinders used by divers tank(s) or SCUBA tank(s).

Characteristics of a good swimmer (Like meh) are

Prepared

Dedicated

Puts effort into training

Improves

*Here is a tip - If your swim team pool has cameras built in to record you swimming from under water - then use them to moniter what you need to fix--- if your pool dosent have someone stand over you with a camera and follow you as you swim a lap. Later look at the tape and see what needs improvment

The deepest free-dive on record with AIDA International is 88 metres, which was obtained by William Trubridge in 2009 in 3 minutes, 30 seconds.

3 miles.

pearl divers are people who were trained to swim in deep oceans and also they were mostly Chinese , Indian and white ... <3 :)

Not sure that there is a single definite "inventor". Dive masks of some description have been used since ancient times using polished tortoise shells over the eyes (ie. without enclosing the nose).

When scuba diving became popular in the 1950s, most people simply made their own masks using a lense and either vulcanised rubber or neoprene. Modern masks only really started to develop when manufacturers stepped forward to make masks with finger pockets to pinch the nose to equalise.

I am not aware that anyone has ever held a patent in any country for "inventing" the dive mask.

no

Depth doesn't really make any difference, but scuba tanks need to be made of strong materials because they are going to be filled with gases which are compressed to 200 times atmospheric pressure or greater. Unless they are strong, they would explode.