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02-12-2017, 10:40
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#1
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Registered User
Join Date: Dec 2013
Location: St. Louis
Boat: 1983 oday 22'
Posts: 714
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Bilge...Why Is There Water?
I've always wanted to ask this question. I've often been walking through marinas, and see water being pumped out of the boat through the bilge discharge, even though the weather has been beautiful, and no rain. In October, we were in Annapolis, and I noticed that many of the brand new boats at the show, also had water being pumped out of them. Brand new boats! There was no rain, so no water leaking into the boat from there. There were grey water tanks, presumably well sealed... black water tanks, also presumably sealed. I'm guessing the fresh water tanks were also well sealed, being that they were brand new boats. So, where would that water actually be coming from?
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02-12-2017, 10:42
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#2
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Registered User
Join Date: Feb 2011
Posts: 174
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Re: Bilge...Why Is There Water?
Are you sure it wasn't water from the A/C unit?
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02-12-2017, 10:55
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#3
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Moderator

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,973
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Re: Bilge...Why Is There Water?
Shaft seal
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02-12-2017, 10:59
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#4
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Registered User
Join Date: Oct 2011
Location: miami,fl
Boat: EggHarbor,Sportfish,35
Posts: 121
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Re: Bilge...Why Is There Water?
Not the bilge. As 1000 said, AC pump.
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02-12-2017, 11:01
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#5
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Marine service provider

Join Date: Sep 2014
Location: puget sound washington
Boat: 1968 Islander bahama 24 hull 182, 1963 columbia 29 defender. hull # 60
Posts: 4,690
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Re: Bilge...Why Is There Water?
New boats I would have to second the AC being the culprit.
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Non illigitamus carborundum
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02-12-2017, 12:50
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#6
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Moderator

Join Date: Aug 2009
Location: Solent, England
Boat: Moody 31
Posts: 9,392
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Re: Bilge...Why Is There Water?
Not all boats leak, some have dusty bilges and have to be polished to keep them clean.
Pete
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02-12-2017, 13:54
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#7
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cruiser
Join Date: Jan 2012
Location: Somewhere in the Adriatic Sea
Boat: Oyster 53 Cutter
Posts: 8,595
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Re: Bilge...Why Is There Water?
The water you see being pumped out is either from the ac unit or refrigeration unit... not the bilge.
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02-12-2017, 14:00
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#8
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Registered User
Join Date: Sep 2012
Posts: 5,452
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Re: Bilge...Why Is There Water?
Quote:
Originally Posted by Pete7
Not all boats leak, some have dusty bilges and have to be polished to keep them clean.
Pete
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Pete,
It's good your bilge is dry because unless the picture is not clear it doesn't look like you have a bilge...must be a newish boat.
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02-12-2017, 14:25
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#9
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Moderator

Join Date: Aug 2009
Location: Solent, England
Boat: Moody 31
Posts: 9,392
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Re: Bilge...Why Is There Water?
Quote:
Originally Posted by robert sailor
Pete,
It's good your bilge is dry because unless the picture is not clear it doesn't look like you have a bilge...must be a newish boat.
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The bilge is 5 inches at the deepest. The yacht hull is a canoe shape with twin keels. The fin version has a deeper keel stub to mount the bolt on keel. However, for the bilge keeled boats they drop a different shape into the mould with recesses for the two keels to bolt into.
Pete
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02-12-2017, 14:37
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#10
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Registered User
Join Date: Sep 2012
Posts: 5,452
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Re: Bilge...Why Is There Water?
Quote:
Originally Posted by Pete7
The bilge is 5 inches at the deepest. The yacht hull is a canoe shape with twin keels. The fin version has a deeper keel stub to mount the bolt on keel. However, for the bilge keeled boats they drop a different shape into the mould with recesses for the two keels to bolt into.
Pete
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How interesting is that, thanks for the comeback...almost looks like a Moody, if so, nice boat.
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02-12-2017, 14:50
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#11
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Registered User
Join Date: Mar 2014
Location: Caribbean
Boat: Lagoon 450
Posts: 497
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Re: Bilge...Why Is There Water?
Lots of boats in marinas attached to shore power run their air conditioning continuously to keep the boat cool and dry even if no one is on board, reduces mold etc.
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02-12-2017, 14:54
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#12
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Moderator

Join Date: Aug 2009
Location: Solent, England
Boat: Moody 31
Posts: 9,392
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Re: Bilge...Why Is There Water?
Thank you. There was a leak from a shroud plate when we first go her but easily sorted. Another mild panic whilst at sea a couple of years later turned out to be the freshwater pump leaking
However, the boat does smell much better with clean dry bilges.
Pete
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02-12-2017, 16:24
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#13
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Registered User
Join Date: Dec 2013
Location: St. Louis
Boat: 1983 oday 22'
Posts: 714
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Re: Bilge...Why Is There Water?
Quote:
Originally Posted by 1000 islands
Are you sure it wasn't water from the A/C unit?
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does an A/C unit put out gallons and gallons of water?
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02-12-2017, 16:26
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#14
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Registered User
Join Date: Dec 2013
Location: St. Louis
Boat: 1983 oday 22'
Posts: 714
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Re: Bilge...Why Is There Water?
Quote:
Originally Posted by a64pilot
Shaft seal
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Would a shaft seal be leaking on new boats?
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02-12-2017, 16:27
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#15
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Certifiable Refitter/Senior Wannbe

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: Van DeStat Super Dogger 31'
Posts: 7,648
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Re: Bilge...Why Is There Water?
Quote:
Originally Posted by scarlet
does an A/C unit put out gallons and gallons of water?
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It is the cooling water from the condenser side of the A/C system; similar to the cooling water from an engine.
Anytime the A/C is running, there will be cooling water discharged.
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All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
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