Remember Sunday! East Coast, Force 3 southerly, Just collected my new aquisition - a Hunter 26.5 from Levington - en route to Burnham where I'm based, so long tack way out passed the Medusa, lovely sail - boat going like a dream, start on the reciprocal tack (heading about 270 degrees ) When we espied a yacht under sail with a helicopter (yellow) swooping in and hovering, was it a rescue? has the entire crew contracted foot and mouth? is there a yellow duster flown?, - no just the helicopter keeping station for something like 15 mins, and all the time I'm closing!! The chopper decides to do a couple of circuits and the yacht takes its sails down, and moves away to my port under power, mean while my crew and I settle down now that the exercise is over to discuss the excitement of the past half hour. The next thing we notice is that the helicopter is still buzzing about the yacht, which my crew member has identified as a sail training vessel, and the yacht is now unde power and heading straight for our port beam and by this time 400 yards away! (we are sailing at around 5 Knots still on a port tack) The Helicopter is again keeping station with the sail trainer on his starboard quarter at 50ft. altitude, and the water underneath him is in a turmoil from his downdraft, This sail trainer now within 50yds and closing fast , whats more seems determined to ram me! If I turn to port I'll hit him so I swung to starboard, jibed and now faced an ever changing vortex of downdraft from the chopper, well I let the main sheet loose, and was in a maestrom of wind and spray, which seemed to take 5hrs but was I suppose 5 secs. in passing, the question is, was my craft and crew in real danger from the down draft from the helicopter? and as this was an obvious training excercise I would not expect them to involve any outside craft. Whats your views!!! PS I did have my radio on, on Ch 16. but heard no calls to me during the whole excercise advising or instructing me of their intentions, The radio was in the cabin however and inaudible over the noise of the helicopter.