Abstract: A marine flooring plate designed for use as walking base in a boat is disclosed. The marine flooring plates is constructed of a High Pressure Laminate (HPL) having a body of kraft paper (P) impregnated with thermo setting binding agent, an upper layer in the form of a decorating paper (D) imprinted with wood structure and impregnated with resin and a wear resistant top layer in the form of a transparent paper (O) impregnated with resin. The body of the high pressure laminate has a through inked black or brown core. The wear resistant top layer and the upper layer having wood structure décor is machined in the depth (d) and into the black/brown body of the high pressure laminate by means of a milling tool. Thus seams (3, 4) are formed in the flooring plate in a predetermined pattern in order to imitate a marine flooring of natural wood.