Abstract
Chart No. 6011 "Symbols and Abbreviatins used on Japanese Nautical chart" was published in 1957 according to the Standard List of Symbols and Abbreviations based on the Repertory of Technical Resolutions issued by the International Hydrographic Bureau (I.H.B.). Since then, as the Repertory was revised and its contents have been renewed, our chart 6011 had to be revised accordingly. Thus, we are now working to revise it. The principle of this revision is to adopt I.H.B. symbols as possible as we can. The author here shows the type, arrangement, contents and index of the sheet, together with some actual examples of the new symbols adopted.
