Reminds me of a time(39 yrs) when we used to dabble the nose-wheels of our trusty Whirlwinds(S-55) in the surf at 90 kts on the long beaches in Borneo. The crewman in the door would usually get wet.......As you got lower , there was a reflected swishing noise from the rotors, which would increase in pitch the closer you flew to the surface.....probably Doppler frequency shift....but it allowed you to judge contact very precisely!!!!
And then, we did it at night.................!!, until we came back with a fishermans` mist net wrapped around the wheels.......!!!
However,that was then, this is now ,and I would never condone 20yr old helo pilots doing such a thing!!!!
