Technical note

How do you choose a bilge pump?

Illustration: technician inspecting a bilge pump and float switch under an open hatch with a flashlight.
Illustrative image.

Pump selection weighs compartment volume, mounting position, hose size, discharge head and the electrical system together. The rated flow on the label is not enough on its own; real-world capacity is lower.

Considered together

  • Compartment volume and mounting
  • Hose size and discharge head
  • Electrical system (12 / 24 V)
  • Automatic + backup pump + alarm

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