What is bottom time in scuba diving?
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What is bottom time in scuba diving?
Recorded in most dive logs, bottom time refers to the total length of time a diver stays underwater. The Professional Association of Diving Instructors (PADI) defines the term “bottom time” as being the total elapsed time from descent to ascent.
What is actual bottom time?
actual bottom time (ABT) A term used in common dive tables to represent the amount of time a diver spent underwater. This time begins upon descent and ends upon the beginning of the ascent.
Why does nitrox increase bottom time?
As stated, when you dive using nitrox you can take advantage of increasing your maximum allowable bottom time. This happens because the extra oxygen added to your breathing gas when it was filled has displaced nitrogen.
How long can you scuba dive at 60 feet?
What is the No Decompression Limit for 60 feet? The NDL or No-Stop time for 60 feet / 18 meters is 56 minutes according to the Recreational Dive Planner table. On a Suunto dive computer using their algorithm, the NDL is 51 minutes for your first dive.
How much does nitrox increase bottom time?
If, for example, at 105 feet with EANx32 has an EAD of 90 feet, so you’re absorbing nitrogen as if you were 15 feet shallower. Therefore, the diver’s ordinary no-decompression limit of 15 minutes extends to 25 minutes — that’s a 66 percent increase in bottom time.
Can you dive deeper with nitrox?
You can simply reduce the risks by doing the same dive profile but on Nitrox. Though, you can’t dive deeper with Nitrox! Even if many people may think so. Nitrox is actually inappropriate for deep dives!
What is the no decompression time?
The “no-decompression limit” (NDL) or “no-stop limit” , is the time interval that a diver may theoretically spend at a given depth without having to perform any decompression stops while surfacing.
Can you scuba dive every day?
A lot of us might wonder, how often can you actually go scuba diving? Yes, you can scuba dive every day. As long as you remain with the dive table safety limits or use a dive computer. You have to monitor all your prior dives depth and bottom time, but 18-24 hours is plenty of time to recover between dives.
