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1 Introduction In the shipping world, the present era may bevery well characterized as an integration age. This isthe good example for applying the comparative advan-tage theory which refers to the high flowing of thefactors of production in the world scale in order toobtain the best combination of the various resources allover the world. The recent features include the ex-
1 Introduction In the shipping world, the present era may be good example for applying the comparative advan-tage theory which refers to the high flowing of thefactors of production in the world scale in order toobtain the best combination of the various resources allover the world. The recent features include the ex-