Exploding Science on Instagram: "Ocean oil rigs do not float away because they are anchored or fixed to the seabed using several engineering methods. Fixed platforms are supported by steel or concrete legs embedded into the ocean floor. Semi-submersible rigs and drillships use dynamic positioning systems with thrusters controlled by GPS to stay in place or are moored using heavy chains and anchors. Tension-leg platforms use vertical tendons anchored to the seabed, providing stability while allow