Cockpit drains not draining... - SailNet Community
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post #1 of 12 Old 02-22-2012 Thread Starter
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Cockpit drains not draining...

Our sink drains into the cockpit drain thru hull. There are two cockpit drain thru hulls, both are just fiberglass tubes leading to the bottom of the boat with no seacocks. I have no idea if there is some kind of valve in there or what. I stuck a metal rod into both drains and VERY, VERY lightly tapped it. When I tapped it, it was hard. The bottom has some growth and barnacles from sitting for a while, I just bought it. Am I tapping barnacles clogging the drains? Can it be plunged? Any suggestions? The boat is a Pearson 26 and I checked the normal Pearson 26 sites with no luck.
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post #2 of 12 Old 02-22-2012
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dive the boat

Clear the blockage from the water. Have two correctly sized plugs standing by and a mallet.



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post #3 of 12 Old 02-22-2012
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I would imagine it IS barnacles etc....I recently bought my boat in St. Pete and it had been sitting in the water for a while. It had an incredibly thick coating of marine life on it. They were up in the swing keel trunk and in all the thru hulls. If no valves, there shouldn't be anything impeding the water flow, so a thin probe will probably be able to knock them loose.
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post #4 of 12 Old 02-23-2012
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It most likely is barnacles which are best cleared from the bottom. I would take a slim blade such as a paint scraper / putty knife or screw driver and dive under the boat to scrape off the growth. Wear rubber gloves to protect your hands from getting cut by the sharp shells.

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post #5 of 12 Old 02-23-2012
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Injecting some bleach from the bottom can be helpful. This will kill most of the living organisms inside and it will be easier to clean them mechanically after the bleach.
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post #6 of 12 Old 02-23-2012
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...and T-ing your sink drain into your cockpit drain is a bad idea...

1981 Tartan 33 #168
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post #7 of 12 Old 02-23-2012
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Quote:
Originally Posted by BubbleheadMd View Post
...and T-ing your sink drain into your cockpit drain is a bad idea...
And no sea cocks is even worse.
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post #8 of 12 Old 02-23-2012 Thread Starter
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Quote:
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...and T-ing your sink drain into your cockpit drain is a bad idea...
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Originally Posted by Flybyknight View Post
And no sea cocks is even worse.

Yeah, not my doing and both are on the list of things to change at the haulout in 2 1/2 months.

Thanks for all of the suggestions, I will try them out and post what worked for me. You guys are awesome.
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post #9 of 12 Old 02-23-2012
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Since you seem to know you have a bottom-growth problem that's the most likely cause now.. does your sink drain? You mention the cockpit won't drain, but if the blockage is below the sink drain tie-in then the sink won't drain either..

Straight through tubes are not ideal, as mentioned above.. I wonder if that was factory or if someone 'improved' things... One of your first chores on haulout should attend to these, after reading our MaineSail's excellent article on installing proper through hull valves.

Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
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post #10 of 12 Old 02-23-2012 Thread Starter
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Quote:
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Since you seem to know you have a bottom-growth problem that's the most likely cause now.. does your sink drain? You mention the cockpit won't drain, but if the blockage is below the sink drain tie-in then the sink won't drain either..

Straight through tubes are not ideal, as mentioned above.. I wonder if that was factory or if someone 'improved' things... One of your first chores on haulout should attend to these, after reading our MaineSail's excellent article on installing proper through hull valves.
Yeah, the sink drains but when it does it backs up into the cockpit. When that started I stopped using the sink but I am sure that if I continued using the sink the sink would back up too.
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