6m 14sLength

14.4 ft Sea level curvature test 4.6 miles, platform "Gina" and "Aces High" oil rig vessel curvature drop (H) = 8 inches * d * d = 8 * 4.65 * 4.65 = 172.98 inches = 14.4 feet (4.4 meters) https://www.youtube.com/watch?v=G7WvFKFG7JA The 14.4 feet curvature drop for a distance of 4.65 miles can be confirmed by other two methods, whose mathematics has been presented and confirmed by John Le Bon in the video below: https://www.youtube.com/watch?v=rgAuy... H = r (1 - cos(x) ) Trigonometry method 1 H = r (1/cos(x) – 1) Trigonometry method 2