Wiktionary
counterflood
vb. (context transitive English) To flood (one side of a vessel) deliberately in order to counterbalance the other side when already flooded, and so prevent capsize.
Usage examples of "counterflood".
He quickly granted permission to counterflood as necessary to take the list off the ship and frowned at news of the heavy casualties in Repair Two.
CIC ordering counterflooding, or my own dear convert Daisy Mae doing it on her own.