Why emergency bilge suction is bellmouthed?

Emergency bilge suction is bellmouthed to facilitate the efficient collection of water and debris from the bilge. The bellmouth shape allows for a smoother flow of water into the suction pipe, reducing the risk of clogging and ensuring maximum water intake during emergencies. Additionally, this design minimizes turbulence and pressure drop, optimizing the performance of the bilge pumping system. Overall, the bellmouthed configuration enhances the reliability and effectiveness of emergency bilge operations.