Maximum Bottom Time Calculator

Calculate Maximum Bottom Time (MBT)





Formula

The formula to calculate the Maximum Bottom Time is:

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

Where:

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:

Using the formula to calculate the Maximum Bottom Time:

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

The Maximum Bottom Time (MBT) is 45 minutes.