Holes were cut into the hulls to sink the vessels and they were then filled with sediment, mostly mud, to weigh them down and secure them.
FT Edit: Access on iOS and web。业内人士推荐WPS下载最新地址作为进阶阅读
。关于这个话题，WPS下载最新地址提供了深入分析
"lastReleaseNotesSeen": "",
This Tweet is currently unavailable. It might be loading or has been removed.，推荐阅读谷歌浏览器【最新下载地址】获取更多信息