In his AF-117, Partin states that he “turned onto the base leg one mile South of the light and was above it” (4). If statute miles, this would change the diameter to: 1.6. 1609 / 60 = 43 m (141 feet). If nautical miles it would change the diameter to: 1.6. 1852 / 60 = 49 m (160 feet).