German valves are the best!

Tirpitz: Your sea valve is too loose，my dear sister. Don't worry, I'll help you.
Bismarck: Don't do that....please let me go....ouch!

提尔比茨：姐姐，你的通海阀松了哦~我来帮你弄好。
俾斯麦：不……求求你……不要这样……啊♀~