Original 11-dotted line map published by Republic of China in 1947. In 1950s People’s Republic of China removed 2 dotted lines in the area of Gulf of Tonkin after it reached an agreement with Vietnam. Since then map is referred to as 9-dotted/9-dash/U-shaped line.
Map attached to Chinese note verbale to UN in protest against joint Malaysia-Vietnam submission to Committee on the Limits of Continental Shelf (May 2009)
Taiwan in Perspective 
[…] Islands (held by Taiwan) and Macclesfield Bank. Chinese/Taiwanese claim is delimited by so called “9-dash line” or “U-shaped line”. However, the nature of the claim remains to be disputed, some arguing that it covers both sea and […]
[…] after WWII and in 1947 and 1948 so called 11-dotted/U-shaped line maps were produced (see Map of South China Sea claims), the publication of the map in 1948 by the ROC Ministry of Interior was the first time that dotted […]
Notice how indiscrimate and inconsistent that U-shaped line is.
[…] the least visible one despite the status of the Republic of China government as the creator of the original 11-dash map. Taiwan has a habit of occasionally letting itself heard to raise its profile among other […]
[…] the least visible one despite the status of the Republic of China government as the creator of the original 11-dash map. Taiwan has a habit of occasionally letting itself heard to raise its profile among other […]