The platform (1) has hollow structural elements (2, 23, 24), and a cooling system (3) for cooling a platform component (11) e.g. transformer. The cooling system has a cooling circuit (3.2) in which a cooling medium (39) i.e. fresh water, is guided. A section of the cooling circuit is formed by the structural elements for guiding the cooling medium. An intermediate cooling circuit (3.1) is thermally arranged between the cooling circuit and the platform component and thermally coupled to the cooling circuit over a heat exchanger (31), where the structural elements are designed as steel pipes. The intermediate cooling circuit is designed as a primary cooling circuit, and the cooling circuit is designed as a secondary cooling circuit.
