Vessel Length
Minimum Capacity per Pump
Below 20 m (65 ft)
5.5 m3/hr (25 gpm) (hand pump 5 gpm, 1.13 m3/hr)
20 m (65 ft) or greater but below 30.5 m (100 ft)
11.36 m3/hr (50 gpm)
30.5 m (100 ft) or greater but below 45.7 m (150 ft)
14.33 m3/hr (66.6 gpm)
45.7 m (150 ft) and greater
Q = 5.66d2/103 m3/hr Q = 16.1d2 gpm