Ascent Speed

14.02.2017 by ricardo

When emerging, the ascent speed is particularly important. Because the correct decompression is ensured by it: If a diver emerges too quickly, the possibility of a barotraumas or other diving accidents exists. For this reason you should always make sure that your ascent speed is not too high.

This is measured in metres per minutes (m/min). A maximum speed of around 7 metres per minute is valid as a reference value. This speed though should only be reached in case of emergency, for example when the air is scarce. About 3 to 4 metres per minute is recommendable. Hence the decompression can take place slowly and in a controlled manner.

How can I measure my ascent speed when emerging?

Modern diving computers have a function to measure speed and warn you when you exceed the reference values. Even when it is not widely spread anymore: If you dive with decompression tables, you should make extra sure to comply exactly with the lower limits, in order not to take any risks.

Find the best Dive Professionals, Dive Centers and Liveaboards on

Search now 🙂