Dive time
As a dive time of the period is referred to a person or a vehicle can spend under the water surface.
The most important reason why people limit their diving time is the amount of breathing gas they carry with them. Apnea divers who use the air stored in their own lungs can only dive for a few minutes. Scuba divers can depending on the source of breathing gas (eg. B. with a rebreather ) for several hours dive long. Another limiting factor is the degree of saturation with dissolved inert gases (mostly nitrogen or helium ) in the body tissue . If too much nitrogen is dissolved in the body, life-threatening nitrogen anesthesia threatens during the dive . If a diver ascends too quickly, i. H. without adequate desaturation during the ascent, gas bubbles can bubble out inside the body. This can trigger life-threatening decompression sickness . Therefore divers must ascend slowly and, if necessary, make certain decompression stops . The time required for this in turn shortens the so-called bottom time .
In the case of submarines , the time that the boat needs from initiating the diving process to reaching the underwater position (boat completely covered by the water) is called the dive time.
Individual evidence
- ↑ Thomas Kromp , Hans J. Roggenbach , Peter Bredebusch : Practice of diving . 3. Edition. Delius Klasing Verlag, Bielefeld 2008, ISBN 978-3-7688-1816-2 , p. 252 .
- ↑ a b Divers FAQ. How long is a dive? dive.steha.ch, accessed on March 7, 2017 : “During a dive, nitrogen dissolves in the diver's body tissue. If the nitrogen saturation becomes too high, there is a risk of deep intoxication and finally nitrogen anesthesia, which can mean death underwater. "
- ^ August Macke: Atomic drive vs diesel engine. Atom-U-Boote.de, accessed on March 7, 2017 .