Abstract: A floating structure which comprises (a) a plurality of floats, each having a flat, polygonal or irregularly polygonal shape, with the upper and lower half parts staggered horizontally a given distance relative to each other, at least one edge forming an overhanging upper extension and the opposite edge a steplike lower extension, said upper and lower extensions being formed with connecting holes which, when the float is arranged to overlap with floats of the same construction in a mutually complementary manner, come in alignment with connecting holes of the lower and upper extensions of the neighboring floats so that said connecting pins are inserted through the aligned holes, and (b) connecting pins adapted to be fitted into the connecting holes formed in the floats.