# Newtons from Bouyancy underwater comparing helium, oxygen, and hydrogen

1. Apr 1, 2010

### blueshifter

I have an under water application where I need the maximum amount
of buoyancy with a limit to the volume i can use for a lifting device.
My question is how much more newtons would be exerted for helium instead of oxygen, or hydrogen instead of oxygen underwater?
What is the percentage increase ?