(a) Explain why centrifugal pumps cannot handle air or vapors to affect priming yet turbo-blowers operating on the same principle can (6)

(b) If a vessel is fully laden, how may it be ascertained that fire pump priming arrangements would operate satisfactorily in the ballast condition. (6)

(c) Explain a method of priming suitable for a centrifugal pump. (4)