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Old 05-29-2017, 09:25 PM   #1
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Water in bilge

I have water getting in my bilge and can't find the source. All hose's are good. All thru hulls look good. Everything is dry except the main center bilge.
I drained fresh water tanks, pumped out holding tanks so it has to be a leak someplace. I had a diver clean the bottom and check for any sign of damage but he said all looked good.
I guess the next move is to haul it out and take a look.
Any idea's?
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Old 05-29-2017, 09:40 PM   #2
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Do you have any conduct that lead to your bilge from anywhere else? I had some water in bilge that was puzzling me, found out it was a small leak from my water heater that was going all the way along a conduct to my ER. 1 drop every 10 seconds, at the end of the day it is 1 gallon in the bilge.

You may use some dye in the water to find out. Like a bit of red in your fresh water, a bit of green in your cooling water etc. When you see a color in your bilge you will know the source.

L.
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Old 05-29-2017, 09:58 PM   #3
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When you find the general area that you think the water is coming into, you can line it with paper towels and see where it gets them wet. Once they have been wet even if they dry out before you check them they will still show where they were wet.
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Old 05-29-2017, 09:59 PM   #4
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Salt or fresh?
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Old 05-29-2017, 10:11 PM   #5
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This ^. Salt or fresh. Eliminate either outside origin or inside origin. Has it been raining where you keep your boat? Might check an entry source from decks, window frames, etc.
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Old 05-29-2017, 10:15 PM   #6
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When you find the general area that you think the water is coming into, you can line it with paper towels and see where it gets them wet. Once they have been wet even if they dry out before you check them they will still show where they were wet.
I can see it seeping in the bottom of the bilge. Center low spot of the bilge. It will have 1" in about an hour. The pump takes care of it but it's now starting to smell damp and muskey. It looks like it's coming from a crack in fiberglass.
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Old 05-29-2017, 10:16 PM   #7
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This ^. Salt or fresh. Eliminate either outside origin or inside origin. Has it been raining where you keep your boat? Might check an entry source from decks, window frames, etc.
No rain. It appears to be salt water.
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Old 05-29-2017, 10:19 PM   #8
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Do you have any conduct that lead to your bilge from anywhere else? I had some water in bilge that was puzzling me, found out it was a small leak from my water heater that was going all the way along a conduct to my ER. 1 drop every 10 seconds, at the end of the day it is 1 gallon in the bilge.

You may use some dye in the water to find out. Like a bit of red in your fresh water, a bit of green in your cooling water etc. When you see a color in your bilge you will know the source.

L.
Everything looks dry. All hose's and connections look good and dry.
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Old 05-29-2017, 10:20 PM   #9
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Where does most A/C drain?
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Old 05-29-2017, 10:20 PM   #10
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Assuming it's salt water (about 9 pound per gallon for salt -vs- 8.3 pounds per gallon for fresh), do you have stuffing boxes on your drive shafts or drippless? Typical stuffing boxes will drop slowly by design.
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Old 05-29-2017, 10:21 PM   #11
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Can you seperate your bilge into multiple area using something like plumbers putty to make temporary dams so you can narrow down where the water is coming in from?
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Old 05-29-2017, 10:23 PM   #12
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Hopefully your A/Cs drain into a sump and get discharged overboard. If they drain into the bilge and it is humid they could be the source of your water.
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Old 05-29-2017, 10:26 PM   #13
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Assuming it's salt water (about 9 pound per gallon for salt -vs- 8.3 pounds per gallon for fresh), do you have stuffing boxes on your drive shafts or drippless? Typical stuffing boxes will drop slowly by design.
Drippless and they are new and look great.
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Old 05-29-2017, 10:29 PM   #14
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Hopefully your A/Cs drain into a sump and get discharged overboard. If they drain into the bilge and it is humid they could be the source of your water.
I can't find a sump for them. Also haven't traced them to see if they do dump into the bilge someplace.
I did have the a/c off all day but water still came in. I will chase that down in the morning to see where it goes.
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Old 05-29-2017, 10:30 PM   #15
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I can't find a sump for them. Also haven't traced them to see if they do dump into the bilge someplace.
I did have the a/c off all day but water still came in. I will chase that down in the morning to see where it goes.
Being in Florida it's hot and humid. I'm sure the a/c units pull a lot of moister out of the air.
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Old 05-29-2017, 11:21 PM   #16
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In cold water the copper salt water supply line to my watermaker condenses moisture and drips. Could it be condensation from somewhere?
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Old 05-29-2017, 11:35 PM   #17
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In cold water the copper salt water supply line to my watermaker condenses moisture and drips. Could it be condensation from somewhere?
I don't have a watermaker but it could be from a/c.
Checking the a/c to find out.
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Old 05-29-2017, 11:58 PM   #18
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Hi,


have you watched the hot water tank pressure valve.


I always leak water from this water heather tank. when I start driving on the engine and I have not remember to level the pressure in the system or shut off the pump. When the engine warms up it raises the heat of the water in the charger and at the same time the pressure that opens the pressure valve and drains water into the bilge. 1-2 dl Every time the time warms up my cummins
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Old 05-30-2017, 05:47 AM   #19
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I am assuming you have a keel. If the water coming in smells bad then it may be seeping in from there. Some of the far eastern built hulls have the keel sump glassed over so water could be getting in there then oozing through the glass covering over the sump. It collects a bad odor on its way through.

Water could also be leaking in somewhere you have not found yet. It could be entering a stringer at one end of the boat and coming out at the other.

I checked a boat for an owner who had water in his forward lower cabin bilge. It turned out to be a leaking shower valve near the transom!

Quote:
Originally Posted by fishpcb View Post
I can see it seeping in the bottom of the bilge. Center low spot of the bilge. It will have 1" in about an hour. The pump takes care of it but it's now starting to smell damp and muskey. It looks like it's coming from a crack in fiberglass.
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Old 05-30-2017, 07:46 AM   #20
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I am assuming you have a keel. If the water coming in smells bad then it may be seeping in from there. Some of the far eastern built hulls have the keel sump glassed over so water could be getting in there then oozing through the glass covering over the sump. It collects a bad odor on its way through.

Water could also be leaking in somewhere you have not found yet. It could be entering a stringer at one end of the boat and coming out at the other.

I checked a boat for an owner who had water in his forward lower cabin bilge. It turned out to be a leaking shower valve near the transom!
It is a bad odor. I changed to head hoses thinking that was the source of smell. That was not the source of smell. I do have a keel and think that may be where the problem is coming from.
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