Colonial Tonnage Measurements: A Comment

Gary M. Walton

The Journal of Economic History, 1967, vol. 27, issue 3, 392-397

Abstract: Shipping tonnages have been frequently used as a basis for inquiries covering a wide and increasing range of topics in economic history. For example, industry studies, descriptions of shipping routes and trade flows, colonial balance of payments estimates, and an analysis of the sources of productivity change in shipping have all been based–at least in part–on tonnage figures. A major problem in using tonnages as a means of historical quantification is that the term “ton” (either a shipping ton or a commodity ton) has varied substantially over time. This is especially true for the Colonial Period, when it was defined differently depending on its usage or the agent or the country reporting it. Fortunately, several recent research efforts have greatly improved our understanding of the meaning and limitations of historical tonnages.

Date: 1967
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