I am designing a subsea equipment, which will be using a foam block to make the equipment neutrally buoyant. While we can calculate the buoyant force needed to make the equipment neutrally buoyant in seawater, I have another question.
Suppose the equipment is neutrally buoyant in water at a depth or 100m. But when the equipment goes to a depth of 3000 m, there will be pressure of 3000m of the sea above acting on the equipment. What calculations do I have to confirm that I measure the correct volume of Foam Block for that kind of depth? Thanks in advance.