Rescued From The North Sea -- An airman is put aboard the Broughty Ferry lifeboat after being picked up, from the sea by the helicopter. Eleven men were rescued from drifting dinghies in the bleak waters of the North Sea recently. The rescued men were not however genuine but human guinea-pigs in a helicopter rescue demonstration, 15 miles off tayport. The exercise was performed by members of 275 search ***** because squadron, one of the only two ***** in Great Britain, and based *****. December