I&#x27;d estimate building anything that floats in the ocean is about 100x as expensive than a regular building, as the environment is very hostile. The sea is constantly moving, trying to pull your structure apart. There&#x27;s storms and salt spray. In case of a problem, like a a fire, you can&#x27;t escape it by just stepping outside.<p>This is why ships are more and more tightly regulated and certified nowadays.<p>Anyway, if this is going to be deployed in a wide scale, there&#x27;s another issue. You&#x27;re going to shade the ocean so they will start blocking large amounts of light, and it could be a problem, as they would be limiting primary plankton production. You&#x27;d have to place them far away in &quot;the deserts of the sea&quot;.