Improved winch drum and a winch with such a winch drum

A winch drum for rotation about a rotation axis and comprising:

• a line receiving outer surface with a number of protrusions or ribs;
• extending substantially from an upper end of the winch drum line receiving outer surface towards a lower end of the winch drum line receiving outer surface;
• the ribs or protrusions are asymmetrically distributed;
• the ribs or protrusions being disposed around the winch drum at radially spaced apart varying intervals;
• and
• the intervals, or distances between ribs or protrusions varying in a non- repetitive manner, at least within respective groups comprising at least three protrusions or ribs or between consecutive groups of at least three ribs or protrusions.