Bilge pumps in Dubai cover automatic submersible pumps, float and electronic switches, diaphragm and manual pumps, high-capacity emergency pumps, smooth-bore hose, strainers and bilge alarms. Rated flow figures are measured at zero head, so real output through hose and a check valve is materially lower — size accordingly.
At least two on most yachts: a small automatic pump low in the bilge for nuisance water, and a larger emergency pump mounted higher. Add a manual pump reachable from the helm or cockpit as a final backup.
Usually a blocked strainer, an air lock, a collapsed or kinked hose, or a discharge loop siphoning water back. Check the strainer and hose run before condemning the pump.
The automatic circuit should stay live even when the main switch is off, but it must be fused close to the battery and use marine-grade tinned cable. That way the pump still works when the boat is unattended at the berth.
Yes. A pump that runs constantly without an alarm hides a leak until the battery dies. A simple high-water alarm, ideally with a run counter, tells you a problem exists before it becomes a sinking.
Smooth-bore, reinforced bilge hose of the correct diameter. Corrugated hose reduces flow significantly, and undersized hose can halve the pump's real output.
Monthly at minimum, and before every trip in the season. Lift the float manually, confirm water actually discharges overboard, and check the switch is not fouled by debris or oil film in the bilge.