We were sailing on Starboard tack. Other boat was clearly visible and sailing on Port tack. We hailed her repeatedly expecting her to tack or duck, but she responded too late, trying to duck behind us. I was on the helm and tried to avoid her but she struck us on the rear portside quarter, about 2 feet back from the stern, probably doing about 6 knots. Etchells have a pointly bow and she took out the stern rail post, pushing it into the deck and pulling the life lines is such away that they bent and split the bow pulpit.
Greenwich                     