Abstract: An anchorable, floating platform intended to be used for extraction of oil and gas from the bottom of the sea and comprising an upper portion over the water surface, a lower portion under the water surface, and a column which connects the upper portion with the lower portion and which is designed to allow transportation of persons between the two portions. The lower portion is surrounded by a ring of ballast tanks which extend below the lower portion, so that a bowlshaped space is formed between the ballast tanks and the lower portion, and anchor wires are arranged to pass the ring of ballast tanks for holding the platform.