Loading the player... Covariance is a measure of the degree to which returns on two risky assets move in tandem. A positive covariance means that asset returns move together, while a negative covariance means returns move inversely.
1. Rotterdam (the Netherlands) This Dutch harbor was the largest in the world, until Shanghai and Singapore grew even larger in 1986. This satellite photo gives an indication of the size of the Port of Rotterdam. (Image via Mannlines) About an hour and a half to the south of Rotterdam is Antwerp, the largest port in Belgium.
It kept that title for more than two decades and accommodated the worldâs biggest cruise ships of all famous cruise lines. Port Miami lost the tittle in the late 2000 to Port Everglades. The port is situated in the Biscayne Bay, Miami, FL on the Dodge Island.