Cost saving is an important driving force to deploy bigger and
bigger ships.Scale economies of ship size have been quantified so
as to assess the viability of large ships. Gilman (1980,1983)
provide cost estimation of several ship sizes in correspondence
with different operating speeds and handling rates.The model
takes account of capital cost,operating cost and fuel cost. Veldman
(1993) incorporate shippers' cost into shipping cost to evaluate
optimum ship size. Lim (1994) investigates efficiency of large ships
not only in terms of cost but also in terms of income. Drewry
(1996) compares total cost of a Super post-panamaxs hip(6000
TEUs) and that of an optimised panamax one(4000TEUs)with
21%saving of the former over the latter.