My current project boat (Helms 25) only has one through-hull. The through-hull is plumbed to two separate drains in the cockpit. My plan is to add a through-hull or two for a couple of bilge
pumps I plan to install. Frankly, I'm surprised that the boat didn't come from the factory with a through-hull for a bilge
pump.
My question is: How do I determine the proper location in the bilge to mount the
pumps? I would assume that at least one should be in or very near the lowest part of the bilge. My initial thought is that the back-up bilge
pump should be mount a bit higher in the bilge.