Which is NOT a countermeasure for bilging?

Increasing vessel speed to outrun water is not an effective countermeasure for bilging because, in situations where water is entering the vessel, simply accelerating does not address the root issue of water accumulating inside the hull. The vessel's integrity and safety are compromised, and increasing speed can exacerbate stability issues and lead to further problems, such as reduced maneuverability or control.

In contrast, closing watertight doors is an essential step in preventing the spread of water throughout the ship, creating barriers within the vessel. Utilizing pumps to remove floodwater directly tackles the problem of flooding, helping to maintain stability and safety. Flooding the opposite side may be employed as a temporary measure to counterbalance a list caused by water on one side, though such an approach has its limitations and risks.

Understanding the most effective countermeasures helps in managing emergencies on board a vessel, where rapid response and adherence to safety protocols are critical to ensure the crew's and vessel's safety.