>>985
また英語教室か

The ballasting of fuel tanks with sea water after the oil has been removed
is not considered to be in the category of taking on flooding water.

タンク洗浄なんかは、帰港してからゆっくりやること
当たり前すぎてマニュアルには書いてない

ここでのポイントは下記
作戦行動中の防御液層の維持
Rather, it is a case of replacing one liquid with another for the purpose
of maintaining the ship in its maximum condition of resistance to damage.