The level of port pricing has been subject to change due to not only development in technology, increased competition by ports, and changes in the organization of the ocean transport industry, but also the goal of port.
Traditionally, ports are regarded as public sector and usually owned by governments the maximize welfare and the profit.
As shown in this study, it is clear that the use of marginal costs in pricing is adaptable to the port as public sector, and the use of a competitive pricing strategy is more appropriate to a private port. Finally, A direction for strengthening the competitive of private terminal in Korea are suggested. thus the cost of these large investments is part of government development programs. But Now, The remarkable worldwide simultaneous move towards privatization has been increased in order to strengthen the competitive power of the port. So, the design of port pricing should be compatible with a port's goal.
This study therefore deals with the difference and the level of port pricing, using KKT-conditions with two aspects of port's goals