Tuesday, April 23, 2019
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depth range and neutral buoyancy?


New Member
Oct 2, 2018
there are some posts which already described how to pick the wieghts for buoyancy, such as this article and this one.

but my questions are:
  1. is it valid to set neutral buoyancy at deeper level (such as 15m, 20m or even 30m and even deeper) if a freediver wants to pass the exam in the AIDA courses?
  2. as mentioned above, what about the official AIDA competition of CWT, can a diver use only a few weights to set the neutrl buoyancy at a very deep level? is such situation match the definition of "constant weight"?

Nathan Vinski

Well-Known Member
Apr 19, 2015
1: For the purpose of the exam(s), you should set the weight according to the information in the course. I.e: Minimum neutral @ 10m, or 1/3 of your max depth. So for 60m you set neutral at 20m.
2: In CWT/FIM/CNF, there are no rules about where you need to have your neutral buoyancy. It is completely up to you, within reason.. (Dont set neutral at 2m kinda thing.) Theres a great article on the effect of buoyancy on how much energy you spend on a dive. https://www.freedivewire.com/freediving-buoyancy/

My experience is that for recreational diving I like to use the maximum amount of weight 'allowed' (neutral 10m or 1/3 max depth), and for deep CWT diving I like to set my neutral at around 1/2 max depth..