[cal40john]

Originally Posted by GordMay

Fluid* dynamics can get pretty complicated, and though I don’t know how, the forces (kinetic energy content) could certainly be resolved mathematically.

*Wind is moving air & currents are moving water - both are fluids, though air is compressible & water is not. The energy content of a moving fluid varies as the square of it's velocity - so we appear (to me) to be shooting at a moving target. I think the ratio will be different at differing base-line velocities.

The equation would have to include the relative densities (854:1) of water (±1025 kilogram per cubic metre) & air (±1.2 kg/m3), the effective projected areas (above & below water), the square of their respective velocities, some factor for compressibility/not ...

Where’s all of our scientists, mathemeticians, & engineers?

You're also going to need the co-efficient of drag for each.

John