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Where is the best place to scuba diving? - Pool & Spa

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SOURCE: Prescription Scuba Mask

The inserts would be specifically for your eye prescription and are bonded to the lens. You can even get bifocals done for your mask and also correct for astigmatism. Your specific prescription can be fit into any dive mask that you choose so there is no need to buy a new mask. prescription scuba mask Manufacturers also offer scuba masks with lenses already premade and the same prescription in both eyes. You choose the prescription that fits your needs. Some divers find this adequate to use underwater. The premade prescription mask would obviously be cheaper than custom made scuba diving masks. Personally, I wear contact lenses when I dive and have had no problems (besides losing one after I surfaced and got hit by a wave). I wear the daily soft lenses and don't notice them when I dive. I've never dove with hard contact lenses so I do not know how they would respond to pressure. If you wear lenses, you should consult your eye doctor to see what they recommend in your case before you dive with lenses for the first time. Let them decide whether you would be better off with a prescription scuba mask or diving with contacts. One site I found which seems very professional is www.prescriptiondivemasks.com. They even have a testimonial from Cathy Church, the renowned underwater photographer, on their site so it can't be too shabby.

Posted on Dec 01, 2008

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SOURCE: How and why scuba gauges give a diver critical information while scuba diving?

Scuba gauges give a diver three very important pieces of information: 1. Time 2. Depth 3. Air Consumption This information enables a diver to stay within safe time and depth limits and avoid running out of air. There are many different devices on the market to help with this, from simple gauges to complex digital consoles. Time If a diver is not using a dive computer to monitor their nitrogen, they dive according to approved dive tables. To use dive tables properly, a diver needs to track their downtime. This can be done with a good dive watch. Two things make a good dive watch: water resistance and a rotating bezel. 1. Water Resistance. Good dive watches are rated to a depth in meters or feet (e.g. 200 feet) or a pressure rating in atmospheres (e.g. 4atm). Even though most divers probably won’t dive below 130 feet (the recreational dive limit), a good dive watch should be rated to 200 feet. Note: There is a difference between “water resistance” and “waterproof”. A “waterproof” watch is what you would wear in the shower, but would probably start leaking at 15-20 feet. 2. Rotating Bezel. A bezel is an adjustable ring on the face of the dive watch with a pointer indicator. At the beginning of a dive, the pointer on the bezel is aligned with the minute hand where it stays though out the dive. At the end of the dive, you compare the difference between the bezel and the minute hand to find out the length of the dive. The bezel should only move “counterclockwise”. It is possible to accidently move the bezel during a dive. Because of this, watchmakers make sure any accidental movement will turn the time in a conservative direction, making the dive longer rather than shorter. Depth Another important part of scuba gauges is a depth gauge. A depth gauge enables a diver to keep track of their depth even if they cannot see the water’s surface. Gauges can be either an analog (needle-and-dial) device or a digital device. Both work in the same way. They measure the surrounding water pressure and convert this into an accurate reading of your depth. Another feature of a good depth gauge is a maximum depth indicator. This tells a diver their maximum during a dive and must be reset after each dive. Air Consumption Another equally important part of scuba gauges is a submersible pressure gauge (SPG). This is connected to the first stage with a high-pressure hose and measures the pressure of the air in the tank. The SPG is much like the gas gauge on a car. At the beginning of a dive, a diver starts with a full tank. This should be about 3000 psi or 200 bars. As the diver breathes during the dive, the gauge will move slowly downwards. This allows the diver to have enough air left in the tank to: 1. Make a slow, safe ascent 2. Make any necessary decompression stops 3. Inflate their BCD once at the surface 4. Breath from the regulator if the surface conditions are rough A submersible pressure gauge also allows a diver to stop diving with air still in the tank. This keeps contaminants from entering the tank due to no air pressure. Wrist Depth Gauge Scuba gauges come in two basic styles. Stand alone gauges or gauge consoles. Stand alone gauges such as a wrist mounted depth gauge or a submersible pressure gauge attached to the first stage of a regulator are great backups when using digital gauges. Gauge consoles allow divers to have all their gauges in one place. Although less easy to read, analog gauges sometimes give slightly more accurate readings than digital gauges, particularly at shallow depth. Submersible Pressure Gauge Choosing Scuba Gauges When choosing scuba gauges, remember to look for: 1. Easy-to-read numbers 2. Luminescent dial or back lighting options 3. Rotating/swivel mounting 4. Easy disassembly for cleaning or replacing parts 5. Good warranty

Posted on Dec 01, 2008

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SOURCE: Why do scuba diving pressure gauges reach 5000 psi if a tank may only be filled to a max of around 3200?

Scuba tanks can be filled well past 3200psi. When they do a hydrostatic test it is well beyond any pressure that any dive shop will fill a tank to. The highest I've seen the pressure get in my tank is 4000 and that is when the filler at the dive shop forgot about it.

Posted on Dec 01, 2008

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SOURCE: Can you use US Divers ICON DX for SCUBA Diving?

Yes, it will be fine. All of the good stuff uses tempered glass.

Posted on Apr 08, 2009

  • 18 Answers

SOURCE: ear drops for scuba diving so my ears don't hurt

There are a few masks available on the market at the moment that are designed to help ease this problem Pro ear mask is just one of them but if if you continue to have ear pain then you wil need a medical report and mayeb have to consider not diving im afraid. Hope this helps and the mask works for you :)

Posted on Jul 27, 2009

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