This invention relates to a roller chain (10) for a circulating rolling module (20) for offshore applications. The roller chain (10) includes a plurality of rollers (11), each mounted on a shaft (12). The rollers (11) are free to rotate relative to their associated shafts (12). The cylindrical inner surface (112) of the rollers (11) and the outer surface (121) of the shafts (12) define sealed cavities (15) filled with lubricating fluid. Each shaft (12) is rotatably locked together with at least one associated link (13) by a rotational locking device (16).