The impact of ship size on ports' nautical costs

摘要

Much is known about transport costs at sea and costs made at terminals in ports. About costs, made by ports to provide nautical facilities (incl. infrastructure) and services, not much research is done yet. This paper estimates the impact of increasing ship sizes on costs made by the Port Authority of Amsterdam when providing nautical facilities and services by using hedonic pricing techniques. We have rather unique data on ship's sizes and harbour dues paid per ship for over 25 years for ships that visited the Port of Amsterdam. Harbour dues paid are used as a proxy for the costs of nautical facilities and services. We have found nearly constant returns to scale, when volume is used as a measure of a ships' size. An increase in average ship size with 1,000 tonnes deadweight will result in approximately euro2 million additional yearly costs (an increase of the average ship size of six percent results in an increase of nautical costs with nearly the same percentage). Our results can be used by Port Authorities and port operators (in case of landlord ports) to estimate costs to be made for providing nautical facilities and services in the near future.