It is far from simplistic, that is why they have engaged Tensa....

It is far from simplistic, that is why they have engaged Tensa.

As for the buoys being out of the water, really?

I don't know what a 20 metre diameter buoy would weigh, (mostly filled with water) but lifting it out of the water would be impossible. Someone might like to calculate how much that would be?

I would think about as much chance as a small iceberg doing the same thing and they are not anchored.

If anyone wants to have a try, the formula for calculating the volume of a sphere is V = ⁴⁄₃πr³.

A cubic metre of water is 1 tonne.

At a guess, I would say the weight of a half filled buoy would be approximately double the weight of the last ship I served on. Remember, the buoy has only minimal positive buoyancy.