By hanging the plumb's line right in front of the keel you now have a good way to gauge the perpendicularity of the keel to the deck line.

由挂铅垂的路线是正确的前面的龙骨，您现在有一个很好的方法来衡量垂直的龙骨到甲板上线。

youdao

By hanging the plumb's line right in front of the keel you now have a good way to gauge the perpendicularity of the keel to the deck line.

由挂铅垂的路线是正确的前面的龙骨，您现在有一个很好的方法来衡量垂直的龙骨到甲板上线。

youdao