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IMO Tonnage Information

Please note: Some of the Web sites listed below are not federal government Web sites, and may not necessarily operate under the same laws, regulations and policies as federal Web sites.


This website provides information on the International Convention on Tonnage Measurement of Ships, 1969 (TM Convention), and its interpretations. The website is intended primarily for the use of Tonnage Correspondence Groups, Working Groups, and other bodies sanctioned by the International Maritime Organization's (IMO's) Sub-Committee on Stability and Load Lines and on Fishing Vessels Safety (SLF), to exchange and disseminate information in conjunction with the work of this Sub-Committee. Questions about this website should be forwarded to the site's webmaster, Mr. Peter Eareckson.

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Last Modified 1/12/2016