Join Date: Aug 2008
Location: Edgewood, MD
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Bilge Pumping System Design
I'm redoing the bilge pump system for my 31'. C-31's don't have a lot of space between the sole and the hull, and the centerboard makes it an even tighter fit, so here's what I'm thinking:
Use a pump w/ both hose inlets and hose outlets (similar to the Gushers and sink pumps) and run a hose down into the bilge. That way, I have a very low intake point and a bilge pump that can be mounted where it's easy to service. So basically, it'd be roughly a 4 ft rise from bilge to pump, and then a 5 ft horizontal line to the stock transom thru-hull.
I plan on installing a Gusher to replace the original manual pump. Would there be any harm in having both pumps tie into a Y so that only one part of the Y accesses the thru-hull at a time? The goal, of course, is to minimize the number of thru-hulls in my boat.
My entire plan is to have three pumps:
Primary Pump: Something small (1200ish) w/ low float
Backup Pump: Something larger (3700ish) w/ higher float than primary
Manual Pump: Cockpit mounted Gusher
Right now, she has a 2" thru-hull for the bilge pump.
Would a manifold allow me to run this off one thru-hull, or would I be better off w/ more thru-hulls? Any advice would be appreciated.
1966 Columbia C-31
1977 Victoria 18
A copy of "Sailing For Dummies"