Abstract: The invention relates to a structural element for ships' decks, ships' bulkheads, ships' loading ramps, shore-mounted loading ramps, ships' elevators, ships' doors, loading hatches or the like. The element comprises a frame structure and at least one support plane. The invention is particularly characterized by said support plane being constituted by a plurality of plate-like sandwich elements which are connected with said frame structure in such a way that they integrally contribute to the overall strength of the structural element. Said sandwich elements serve as flanges for beams with conventional webs which are included in the structural element. In a preferred embodiment of the invention, the sandwich element comprises a core consisting of a pyramidal framework structure, said core being positioned between two covering plates.