Your ship has an OWS and reciprocating bilge pump of capacity 2.0 m3 /hr. It takes about 12 hours to pump out the complete bilge tank through OWS. The ship is going to dry-dock and Chief Engineer is recommending company to install a centrifugal pump of 10 m3 capacity which will take the same space and can pump out the bilge tank only in 2.5 hrs. The company should:

A. Accept the proposal as a centrifugal pump has several advantages over a reciprocating pump
B. There is no question of accepting a centrifugal pump as a Engine room bilge pump
C. Propose to fix a Gear pump instead of a centrifugal pump
D. Pipelines and pumps once designed cannot be changed as they are class approved

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