I am installing an automatic bilge pump in my 1974 Oday 27. Where would be the best location to install the water discharge though hull?
Bilge pump through hull placement
- Thread starter Craig Warren
- Start date
- Status
- Jan 22, 2008
- 519
discharge location
When I installed mine I picked a spot behind the aft cabin bulkhead reachable through an inspection port, and as high as possible under the gunwale so that waves would not allow water in when underway and heeled. The length of tubing ran under the cabin sole, so everything was out of sight.
When I installed mine I picked a spot behind the aft cabin bulkhead reachable through an inspection port, and as high as possible under the gunwale so that waves would not allow water in when underway and heeled. The length of tubing ran under the cabin sole, so everything was out of sight.
next to the head sink thru hull
I placed mine in the head about 2 inches away from the sink thru hull. It's just above the boot stripe (looking at it from the outside)
I placed mine in the head about 2 inches away from the sink thru hull. It's just above the boot stripe (looking at it from the outside)
Bilge Pump outlet
I have my bilge pump outlet on my stern. I don't have an automatic pump though. I have a manual pump similar to the Whale Pump, on the inside of the Port cockpit side. There's a cover inside the cockpit above the soul, and I only have to take it off and place the pump handle on the pump, and pump it by hand while sitting in the cockpit. The intake hose with screen, is sitting under the cockpit in the bilge. I've never had to use the pump since I've installed it, thank the Good Lord for small favors. Maybe I'll put a little water in it this year and see if it still works. I've noticed that what little water has ever gotten in my bilge, has always collected in the area where I have the intake hose.
I have my bilge pump outlet on my stern. I don't have an automatic pump though. I have a manual pump similar to the Whale Pump, on the inside of the Port cockpit side. There's a cover inside the cockpit above the soul, and I only have to take it off and place the pump handle on the pump, and pump it by hand while sitting in the cockpit. The intake hose with screen, is sitting under the cockpit in the bilge. I've never had to use the pump since I've installed it, thank the Good Lord for small favors. Maybe I'll put a little water in it this year and see if it still works. I've noticed that what little water has ever gotten in my bilge, has always collected in the area where I have the intake hose.
Thru-hull location
Craig-I've a '78 O27 & the outlets (thru-hulls) for the auto & manual pumps are both located on the stbd side just below the rub rail and abt. a foot fwd of the transom. The manual pump , a diaphragm type, is located in the stbd cockpit locker & the electric is of course in the bilge. The outlets should be as far above the waterline as possible : having them near the cockpit allows you to visually confirm pump operation from the helm. You should use a bronze, stainless or fiber-reinforced plastic(Marelon) for the fitting and stay away from the cheap plastic thru-hulls that can & do crack easily and create a potential source of leakage. If your boat is, like mine, equipped with the cheap plastic thru-hull fittings for the sinks in the galley & head,( the original fittings) you should think abt. replacing them too, with a ball-valve sea-cock type fitting. The original plastic gets brittle with age: the strains caused by replacing a hose etc is enuf to cause a crack and the sink drain thru-hulls are close enuf to the waterline to be submerged when the boat is heeled, so a cracked fitting has the potential to allow a lot of water to enter the boat.
Craig-I've a '78 O27 & the outlets (thru-hulls) for the auto & manual pumps are both located on the stbd side just below the rub rail and abt. a foot fwd of the transom. The manual pump , a diaphragm type, is located in the stbd cockpit locker & the electric is of course in the bilge. The outlets should be as far above the waterline as possible : having them near the cockpit allows you to visually confirm pump operation from the helm. You should use a bronze, stainless or fiber-reinforced plastic(Marelon) for the fitting and stay away from the cheap plastic thru-hulls that can & do crack easily and create a potential source of leakage. If your boat is, like mine, equipped with the cheap plastic thru-hull fittings for the sinks in the galley & head,( the original fittings) you should think abt. replacing them too, with a ball-valve sea-cock type fitting. The original plastic gets brittle with age: the strains caused by replacing a hose etc is enuf to cause a crack and the sink drain thru-hulls are close enuf to the waterline to be submerged when the boat is heeled, so a cracked fitting has the potential to allow a lot of water to enter the boat.
I agree
I agree w/ TT. Inspect your thru-hulls. When I first bought my boat I was checking the hoses and when I grabbed the hose under the sink in the head to check it, the thru-hull snapped off. That would have been bad if we were under sail.
I agree w/ TT. Inspect your thru-hulls. When I first bought my boat I was checking the hoses and when I grabbed the hose under the sink in the head to check it, the thru-hull snapped off. That would have been bad if we were under sail.
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