I have minor damage above water line.

我船水线以上有轻微的损坏。

youdao

I have major damage above water line.

我船水线以上有严重的损坏。

youdao

This area is particularly vulnerable because it is often prone to mechanical damage but derives no protection from an anode system being above the water line.

此区域特别易受损因为容易产生机械损伤，但是却无法得到吃水线以上的阳极系统的保护。

youdao

The Ben-my-Chree suffered damage approximately four metres above its water line but no passengers were injured.

BBC: Isle of Man ferry collision: Ben-my-Chree back in service