Jeff wrote:
.... If the wind and the current is the same
speed and direction, then the boat (and all other boats in the vicinity)
feel no wind - it will effectively be flat calm, and the alleged
collision could not happen.


Are you saying that if the wind and current are from the
same direction at the same speed, then boats could not
sail?!??!!

Think it over Jeff, a guy who is familiar with applying
Maxwell's equations... much less one with your experience...
ought to know the answer.

Fresh Breezes (and currents)- Doug King