Reply To: 3. Sail window size proposal wording Home › Forums › IDNIYRA Technical Committee Discussion › 3. Sail window size proposal wording › Reply To: 3. Sail window size proposal wording September 26, 2020 at 8:21 am #299 Peter Hamrak Sorry I did not want to write diameter, but radius. So the Insertion would be like: The windows shall reach a point at least 20 cm from the luff or 40 cm in a radius of the sail’s tack. Thanks!