Mast and bilge pump

It’s been too cold lately to varnish in the garage, so I set up the mast in the spare bedroom. I put on five coats of Helmsman spar urethane, probably not as good as real spar varnish but I’ll give it a try this season. I can’t imagine it’ll be a problem for a garage kept boat. The fiberglassed section is a little noticeable, but not too bad.

A few times I’ve buried the rail while trying to bail out water in a blow, so I thought a diaphragm pump might be a more sedate way of keeping my feet dry. I’m thinking I’ll have a pipe go to each side of the boat where the water collects, a diverter valve in the middle so I can select which side to pump, and a check valve on the ends of the tubes to keep water from draining back in. Pumping the water into the centerboard case seems like a tidy way to do it. I’d like the pump to be centrally located so I can work it on either tack, but this option looks like it’ll take up too much floor space and the plumbing might be awkward.

Back here on the sternsheets looks pretty convenient, although the handle would need to be lowered to accommodate the sleeping platform. Looks like there’d be a lot of awkward plumbing for this option too.

Underneath the main thwart with the handle just sticking through is high on the list. It’ll be mostly tucked away and the plumbing runs will be short.

I think I’m leaning towards something like this. The handle should be a little easier to work and it’s still out of the way. Next I need to figure out what plumbing parts I need. The threads on the pump aren’t NPT and I have no idea what standard they are other than 1-7/16″ – 6, so I might see if I can 3d print some custom adapters. Failing that I could machine some.

Now that I’ve typed all that out about the bilge pump, I’m wondering if a single flexible hose and check valve would be better. Since I’d need to lean down to work the diverter valve I might as well just clip a hose onto the frame where the water collects.

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