piim - laevakere talastiku põiktala, mis seob omavahel eri parraste kaari
the roundup or convexity of a ship's deck beams, the form of which is a segment of a circle or part of a parabola
the convexity of a deck line in a transverse section, normally 2 cm to each metre of breadth. It has purpose is to
assist drainage and provide strength.
