To dewater a compartment, which option is used?

• A. Portable eductors
• B. Sump pump
• C. Installed watering equipment
• D. Hand bilge pump

Answer: (C)

Dewatering a compartment relies on devices that create entrainment to move water out of the space. Portable eductors do this by using motive water (from a firemain or pump) to generate a jet that entrains surrounding water and lifts it overboard. They’re ideal for rapid, effective removal in tight, flooded spaces because they don’t depend on electrical power in the space and can draw water from low spots through hoses. Sump pumps and hand bilge pumps can remove water but are slower or require manual effort or a pre-drained sump, making them less versatile for quick dewatering across a compartment. Installed watering equipment is meant to supply water and isn’t a dewatering device, so it wouldn’t be used to remove water.