Counter-flooding is the pumping of sea water into the high side or end of a ship to correct for off-center weight that had resulted in a list or adverse trim angle.

Counter-flooding is pumping water out of a flooded compartment to counter the effects of flooding.

Counter-flooding is the transfer of fluids from the low side or end of ship to the high side or end.

Counter-flooding is any action taken to counter the effects of flooding.