Leak OUT of the boat! - SailNet Community
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post #1 of 13 Old 01-10-2011 Thread Starter
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Leak OUT of the boat!

Our Gulfstar 44 has been on the hard at our DIY marina for over 2 months. We have a constant leak in the bow midships, starboard of the forward head, under the floor in the walk way to v-birth.....drip-drip-drip, fresh water, OUT of the boat on to the ground. We thought it was from some of the pumps in the heads so we changed them and all hoses.......no leaks. We added bleach to both water tanks (one at a time with all hoses, pumps shut-off). No bleach water is coming out. The boat has had water intrusion for some time through the ports/hatches and down the mast. If the water is not coming from the tanks could it be leakage from the saturation over the years? Remember this drip has been going on for over two months. We are stumped! HELP!

Last edited by FirstLightVeroBeach; 01-10-2011 at 07:26 AM. Reason: spelling
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post #2 of 13 Old 01-10-2011
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You can try salt in your freshwater tanks as a tracer. Bleach is a poor tracer because it degrades very quickly into trace amounts of hydrochloric acid. Get a sample of the dripping water and send it to a water lab to see how much salt is in this water before adding any tracer. You may as well have them run all the non organic minerals required for a domestic water. You could also run a test for detergents, a common test for wastewater if there is any possibility of water from the sink, washing machine or dishwasher as the source. Talk to a chemist at the lab and see what is recommended as they might thing of something I missed.

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post #3 of 13 Old 01-10-2011
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why not add some food coloring to tank water and see if drip changes color? (I know, dumb idea - but it's cheap)
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post #4 of 13 Old 01-10-2011
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is it coming from/ at a thru hull or just out of the hull? if around thru hull and there is no water at that point inside the boat then you have saturation there. check your ground stud for your high water alarm is it the same as the 37 it should be to stbd and back from the main mast. G.S. used a steel stud screwed into the ballast. these over time rot away and let water into the ballast cavity. we had a small amount of water seepage. i replaced stud with s.s. and dabbed polysulfite around it. i would be very supprised if you had saturation as the hulls are solid glass, but then it is a G.S.
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post #5 of 13 Old 01-10-2011
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I don't get it, how is it getting through the hull? You can hear it dripping inside the boat but it's dripping outside? It's not from your anchor/chain locker is it?

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post #6 of 13 Old 01-10-2011 Thread Starter
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Thanks Mike I'll look into that. The leak is through a transducer.
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post #7 of 13 Old 01-10-2011
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A swimming pool pH test kit can be useful to help identify or eliminate water sources.
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post #8 of 13 Old 01-12-2011
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I would pull the transducer and make sure it is structurally sound as it might come loose and flood the boat
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post #9 of 13 Old 01-12-2011
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"The leak is through a transducer."
Like the geezer said, PULL THE TRANSDUCER.
Either it is leaking and it will need replacing, or water is leaking out of the hull where the trnsducer penetrates it. And you can't confirm that without pulling the transducer anyhow.
You might want to borrow a moisture meter or use a tap hammer to see if the hull is cored & saturated in the area around that hole and above it.
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post #10 of 13 Old 01-12-2011
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Quote:
Originally Posted by FirstLightVeroBeach View Post
Thanks Mike I'll look into that. The leak is through a transducer.
It could also be that the hull is cored and that the hull core is leaking out through a badly installed transducer, which may have been how the water got into the hull's core in the first place. I really hope this isn't the case, cause this can be a really expensive repair.

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