A diver can always stay as long as they want if they have enough gas to breath and do any required decompression. But if you are asking what the time limit is on air without having any required decompression time, the answer would be about 5 minutes which includes your descent time or about 3 minutes on the bottom.
It depends on how deep the diver goes, and what air blend the diver is breathing. There are dive tables that state how long a diver can stay at a certain depth before requiring decompression. The basic recreational diver typically breathes either air or Nitrox. There are separate dives tables for air and Nitrox.
Without breathing, the world record is 22min With air bottles (scuba diver) or in a submarine you can of course stay longer. In a submarine when you have enough supplies, you can stay virtually forever under water.
A diver is underwater in the area. Stay at least 100 ft away.
15 minutes
It seems like you know the answer, but it is 34 minutes (from 18 meters).
we use a chart for that. which helps us calculate how long we can stay in a certain depth. dive planning
Scuba stands for Self Contained Underwater Breathing Apparatus. It uses two regulators, one on the bottle which takes the volume of compressed air to a manageable rate, then the second regulator takes the air to a breathable rate so the diver can breath the air comfortable. The other part of diving is a divers buoyancy. This is controlled by using a hose which comes from the first stage regulator into a vest called a B.C. (Buoyancy Compensator). The goal of this device is to get you, the diver as close as possible to becoming neutrally buoyant (you don't go up or down, you just stay in the middle). However once neutral buoyancy is achieved it can still be affected through your breathing rate. Gregory L. Las Vegas, NV (D.I.T.)
A float with a red flag with a diagonal white stripe is the symbol for "Divers Down"; Scuba divers are underwater in this area. Be cautious in the area of the float, because the divers will surface nearby.
It depends on many variables, such as the time the diver stays at a particular depth, the temperature, level of diver exertion, diver's physiology, etc, etc. Dive tables or a dive computer is used to calculate how long it is safe for the diver to stay submerged. The primary limitation on dive duration/depth during a day is how much Nitrogen the diver has absorbed into his or her tissues. Exceeding the safe limits can cause decompression illness. These limits are only rough guidelines however, as some people are at higher/lower risk for decompression illness based on their physiology, level of heath and fitness, and other factors.
100'
A diver is underwater in the area. Stay at least 100 ft away.