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[其他] 一個中國穆斯林的海上瞭望(一) 寶船

Common...... what you mention about were not "sea boats"
they were used in lakes and rivers.
besides what you said......"另外補充一點資料, 史上記載鄭和從福建-五虎門(今天的福州港)出發, 我找了一下福州港水深資料,這是福州港引航站的網頁:http://www.fzpilot.com/yewu12.htm......"
did you know that that was almost six hundred years ago stuff?

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