Maximum Bottom Time Calculator

Formula

The formula to calculate the Maximum Bottom Time is:

\[ MBT = NDL - (AT + SST) \]

Where:

\(MBT\) is the maximum bottom time
\(NDL\) is the no-decompression limit
\(AT\) is the ascent time
\(SST\) is the safety stop time

What is Maximum Bottom Time?

Maximum bottom time refers to the maximum amount of time a diver can spend at a certain depth without needing to perform decompression stops during ascent. This time is determined by the no-decompression limit, which is the maximum time a diver can stay at a given depth without having to stop for decompression. The maximum bottom time is calculated by subtracting the ascent time and safety stop time from the no-decompression limit. This ensures that the diver can safely ascend to the surface without exceeding safe nitrogen levels in their body.

Example Calculation

Let's assume the following values:

No-Decompression Limit (NDL) = 60 minutes
Ascent Time (AT) = 10 minutes
Safety Stop Time (SST) = 5 minutes

Using the formula to calculate the Maximum Bottom Time:

\[ MBT = 60 - (10 + 5) = 45 \text{ minutes} \]

The Maximum Bottom Time (MBT) is 45 minutes.