How Oil Rigs Survive 100-FOOT Waves

Added: 2026-05-22

[00:00:00]This is what happens when a 100-ft wave hits an oil rig. Most people think these massive structures are standing on giant concrete columns reaching straight to the ocean floor, but in ultra-deep waters, that's impossible. So, engineers did something insane. They made the entire platform float. It's called a semi-submersible. Beneath the surface, massive pontoons are filled with thousands of tons of ballast water. This pushes the center of gravity deep underwater, where wave forces are almost zero. The result is something incredible. The platform doesn't fight the ocean. It moves with it. When a 100-ft wave passes through, the rig barely shifts at all. Holding this thousand-ton beast in place, massive steel chains and anchors that literally bite into the ocean floor. Some go down nearly 3 km. A floating city in the middle of nowhere, built to survive forces that would crush anything else.