Why do sailors call the area of action of the winds of the western transfer the roaring forties?

ROARING FORTY, the name given during the sailing days and still preserved, is an area between 40 ° and 50 ° South latitude in the southern hemisphere, which is characterized by the presence of constantly blowing strong winds. They are caused by the constant movement from west to east of a number of RELIEF AREAS; as a result, it does not get too hot here, but the humidity is high and it is always windy. The strength and stability of the winds are due to the fact that in this area there are no significant land masses that could impede their movement.