A repetitive dive is a dive, which takes place between 10 minutes and 12 hours after your last dive took place. If you were less than 10 minutes at the surface the dive is considered to be interrupted. If you have been at the surface for more than 12 hours, then the decompression is completed and you can dive again without any danger.
Why is a repetitive dive different from a normal dive?
Since there is still nitrogen released in your body from the previous dive, you cannot stay as long under water during the following dive. Thus your no deco time is significantly reduces in part. Your diving computer can take over the calculation of the new no deco time for you.
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