GPH - Gallons per hour
LPM - Litres per minute
Small - Medium Sized Power Vessels:
- Under 5.5m - 300-500gph pump
- 5.5-7m - 450-700gph pump
- 7-7.9m - 700-1100gph pump
Larger Power Boats:
- 7.9-9.1m - 800-1200gph pump
- 9.1-10.7m - 1000-1600gph pump
- 10.7-12.2m - 1600-2200gph pump
Fitting an oversized pump doesn’t hurt.
Always stick to the manufacturer’s recommendations regarding wire grading and thickness.
Bilge pumps should be secured and sealed with shrink wire to prevent corrosion.