rain water entering bilge thru mast. - Page 3 - SailNet Community
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post #21 of 46 Old 01-04-2013
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Re: rain water entering bilge thru mast.

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Originally Posted by zeehag View Post
is a good thing--i love my drier bilges...
Fully mitigated here. Best of both.


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post #22 of 46 Old 01-04-2013
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Re: rain water entering bilge thru mast.

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Originally Posted by Minnewaska View Post
Not sure the mast boot makes much difference with that 70 ft tall furling slot running the length of the stick.
Does the furling system end below the mast boot?

You could probably plug the furling slot at deck level?
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post #23 of 46 Old 01-04-2013
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Re: rain water entering bilge thru mast.

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Originally Posted by knuterikt View Post
Does the furling system end below the mast boot?

You could probably plug the furling slot at deck level?
It does. Frankly, it ends about 5 feet above the deck. However, you would have to stop the water from getting in the slot above and traveling down the interior of the mast. Plugging up the interior, particularly with the 5 halyards, topping lift and all the wiring, would seem impossible.


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post #24 of 46 Old 01-04-2013
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Re: rain water entering bilge thru mast.

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Originally Posted by Minnewaska View Post
It does. Frankly, it ends about 5 feet above the deck. However, you would have to stop the water from getting in the slot above and traveling down the interior of the mast. Plugging up the interior, particularly with the 5 halyards, topping lift and all the wiring, would seem impossible.
All these things exit the mast above the mast boot?

If you have cables exiting the mast at the keel - there are solutions to that also

Have you looked at the link i posted to the Selden documentation?

The trick is to plug the mast on the inside and the outside at deck level and have a drain hole at the top of the plug to let the water out of the mast above the mast boot.
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post #25 of 46 Old 01-04-2013
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Re: rain water entering bilge thru mast.

Good point about the lines exiting above. However, there are several cables that continue to the step (anemometer, nav lights, deck lights, radar, VHF antenna, TV antenna). I don't think plugging it up would be a good idea.


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post #26 of 46 Old 01-04-2013
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Re: rain water entering bilge thru mast.

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Originally Posted by Minnewaska View Post
Good point about the lines exiting above. However, there are several cables that continue to the step (anemometer, nav lights, deck lights, radar, VHF antenna, TV antenna). I don't think plugging it up would be a good idea.
As i said -there are solution for that also..

each cable get its own piece of electrical tubing matching the cable diameter (as close as you can - considering plugs on the ends

let these pipes extend 20cm (8 inches) above the internal plug in the mast.

Only the water running along the cables will enter the bilge, the rest drains out of the mast.

My mast had an internal plug like i described.
The PO made a hole in that plug to get the VHF cable down w/o sealing the hole.
When we had the mast down we
a) inserted a piece of electrical tubing for the VHF cable
b) Made a new hole with a tube for the new TV antenna cable

Not very difficult but need the mast down
The sealing compound has to be poured with the mast in place.
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post #27 of 46 Old 01-04-2013
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Re: rain water entering bilge thru mast.

Hmmmm. And this is easier than pulling a thru hull over the winter?


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post #28 of 46 Old 01-04-2013
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Re: rain water entering bilge thru mast.

To me, it sounds as if some are making a mountain out of a mole-hill. C'mon guys and gals, we're talking about a miniscule volume of water entering an opening that may measure 6 X 9 inches at best. Even during a monsoon or hurricane, that volume is next to nothing at best. If someone's bilge completely fills and the water then flows over the cabin sole, the water is coming from someplace other than the top of the mast.

If you've got some water in the bilge, which most boats do from time to time, and you're worried about damage from freezing, then merely dump a half-gallon of bio-degradable antifreeze in the bilge - problem solved. When spring arrives, pump the bilge out, then sponge it dry with a bilge sponge. This ain't rocket science.

Good Luck,

Gary
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Re: rain water entering bilge thru mast.

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Originally Posted by Minnewaska View Post
Hmmmm. And this is easier than pulling a thru hull over the winter?
Had the mast down for other work - so yes not much work.

I don't have a through hull at the lowest point of my bilge.

I have seen bilge water freeze with the boat in the water

It is not uncommon around here to keep the boat floating with "bubble hoses" to keep the ice off the hull - but when we get -20C for a longer period (not every winter) water inside the boat freezes.

So keeping water at a minimum level is good
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post #30 of 46 Old 01-04-2013
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Re: rain water entering bilge thru mast.

I store my 35 footer with the mast up. I pull the internal halyards and replace them with 1/8" braided messenger lines. My boot is watertight and other than the openings for the halyards, there are no other pathways for water in the mast.

Those 10 apertures for the halyards let in an incredible amount of water over the winter. I pump out my rather shallow bilge after every significant rain to stay ahead of freeze-ups. Over the course of a typical winter I will remove at least 30 gallons of water. I've been doing this for 16 years now. If I didn't live 10 minutes from the boatyard, I'd have the mast removed for the winter.
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