Maritime transport costs significantly impede international trade. The authors examine why these costs are so high in some countries, and, quantify the importance of two explanations: restrictive trade policies, and private anti-competitive practices. Both matter, they find, but private...

Recent research suggests that trade costs influence the pattern of specialization and trade, but there is limited empirical research on the determinants of trade costs. The existing literature identifies a range of barriers that separate nations, but then typically focuses only on transport...