Hi David, Thanks for the link. It doesn't work in China but I managed to download it in Hong Kong.
John
John, try:
https://archive.org/details/mastandsailineu00smytgoog/page/n9
It's available in various formats, including PDF:
https://ia902607.us.archive.org/21/items/ mastandsailineu00smytgoog/ mastandsailineu00smytgoog.pdf
There is in depth technical description of Chinese junks in this book written in 1906. Can anyone tell me where can I find a downloadable PDF version?
John Kwong