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"Oxygen tank" complicates this answer. Oxygen breathed at depth can have some very unpleasant symptoms. Think of the O2 as the paramedics do. Oxygen is a drug, and you can overdose by taking a lot at once or a little for long periods of time. The deeper you go, the higher the partial pressure of oxygen, the greater the dose your body takes on.
Depending on how long you stay, you can dive to 20 - 50 feet of sea water. However, you won't have but a few short minutes at 50 fsw, before you suffer from CNS Oxygen Toxicity.
However, if you were asking about an "average" Scuba diver, breathing compressed AIR... The recreational limit is typically 130 fsw. This limit is in place due to the effects of nitrogen narcosis (AKA "rapture of the deep") and once again, partial pressure (of NITROGEN this time) is to blame.
Navy Deep Sea Divers are qualified to 190 fsw, but these depths are usually considered "exceptional exposure" dives. They are most often performed while wearing a hard hat diving rig, with surface supplied air, and a support staff tending topside.
What else can I help you with?
What are the similarities between swimming and diving?
swimming you have to go in a pool where as diving you dive into water from a height
What water sport is the most dangerous Out of swimming water skiing surfing scuba diving snorkeling kayaking or canoeing?
I would say scuba diving. You can get the bends, or nitrogen narcosis. There is also the factor of running out oxygen during a dive.
What makes a person come out of water within no time after he makes a dive from a high diving board into a swimming pool?
the air inside you
To go into water head first?
To jump headfirst in to water is to dive.
What is the board called when you dive into the water?
The board is called a diving board.
Why do scuba divers not get crushed by the weight of water when they are diving?
They do not dive deep enough.
What is a back dive?
when you dive into the water going forward. usually touching your toes and then diving in.
Why is it that when diving in a lake the deeper the dive the cooler the water?
Its farther from the surface where the sun reflects.
What would you need for cold water diving?
A wet suit that has been designed for the temperature of the water you plan to dive in.
Can a human being dive to 400 feet with oxygen tanks?
Yes, it is possible for a human being to dive to 400 feet with the use of specialized equipment such as mixed gases and technical diving techniques. However, diving to such depths requires extensive training, experience, and equipment to manage the associated risks of deep diving, such as nitrogen narcosis and decompression sickness.
What kind of dive is the fastest?
Crawl diving.
What can be purchased at a dive shop?
A dive shop sells all the required components for one to go underwater diving. They sell wetsuits, oxygen tanks, masks, fins, snorkels and accessories.
