Platform: 27 m for men, 21 m for women (vs World Aquatics High Diving's permanent 20m platforms); Platforms positioned over deep open water (minimum 5-7 m depth required); Platform width: 1.5-2 m typical
Why people argue about this
People often assume that the exact dimensions of 27m for men and 21m for women are chosen arbitrarily, but actually these measurements are based on safety considerations ensuring there's enough room for a safe landing while also providing an appropriate challenge level for each gender.