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Catalina/Capri 25/250 Sailor's Forums

Catalina 250 Specific Forum

Seacocks on sink drains

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TakeFive
Master Marine Consultant

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2272 Posts

Initially Posted - 02/29/2012 : 13:25:54

How many C250 owners have seacocks on their sink drains? The through-hulls are well above the waterline when the boat is at rest, but I found this [url="http://www.sailingmates.com/seacock%20thru%20hull.htm"]little bit of internet "folklore"[/url] a few minutes ago:
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"> 2. The American Boat and Yacht Council (ABYC) regulations require that all thru-hulls that exit below the waterline be fitted with a seacock. For a sailboat the definition of the waterline is the heeled waterline when the rail is in the water - so most of your thru-hulls should be fitted with a seacock. <hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
For those of you who have not added seacocks, why not?

For those of you who have them, did they come from the Catalina factory that way?
What kind of seacock did you use? Marelon or bronze?
Did you do anything to enhance ease of access?
Did you replace the through-hulls, or add on to the existing ones?
What tricks did you do to bolt on the flange (plywood epoxied to the hull interior, perhaps)?

FYI, my boat has a head intake on the centerline behind the companionway ladder. It is a bronze ball valve type, with bronze through-hull fitting, and flange screwed into plywood that's glued to the hull (probably with 5200). I keep it closed all the time, because when we use the head we always pump fresh water from the galley sink and dump that into the toilet. We don't want seawater in our holding tank.

This is in partial response to [url="http://catalina-capri-25s.org/forum/topic.asp?whichpage=1&TOPIC_ID=24625"]this related thread[/url], but I moved to the C250 forum due to the specific issues with installing these in our boats.

Rick S., Swarthmore, PA
PO of Take Five, 1998 Catalina 250WK #348 (relocated to Baltimore's Inner Harbor)
New owner of 2001 Catalina 34MkII #1535 Breakin' Away (at Rock Hall Landing Marina)

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TakeFive
Master Marine Consultant

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2272 Posts

Response Posted - 03/05/2012 : 10:40:49

From the deafening silence on this topic, should I assume that everyone has factory installed seacocks on their sink drains?

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Tradewind
Admiral

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USA
531 Posts

Response Posted - 03/05/2012 : 19:03:10

No factory installed seacocks on mine. Both are above the water line and the drain hose is not designed to be below the waterline, IMO no reason to install seacocks on the sink drains. Head intake seacock and thru hull are Marelon but I've never used it, probably should exercise it more often.

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britinusa
Web Editor

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USA
5404 Posts

Response Posted - 03/05/2012 : 19:54:01

Rick, am I right think that the thru hulls on JD include:
.. Head sink drain
.. Galley sink drain
.. AC outflow (port side)
.. AC inflow (below water line)
.. Manual Bilge outflow
.. Electric Bilge outflow
.. Anchor locker drain

only the AC Inflow has a sea cock.

Paul

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delliottg
Former Mainsheet C250 Tech Editor

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USA
4479 Posts

Response Posted - 03/05/2012 : 23:54:07

Rick,
SL has no seacocks on any of the through hulls (two bilge, and both sinks). I don't think I'd want to be out in enough wind to bury the rails on our boats. Long since time to reef of you're heeled over that far.

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zebra50
Captain

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USA
408 Posts

Response Posted - 03/06/2012 : 11:14:37

I agree with David. No way I would be out in a bury the rail weather. My first mate would have me in long vefore that. Our 250 has no sea cocks on any of the drains, two sinks, bilge, and the anchor locker.

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TakeFive
Master Marine Consultant

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2272 Posts

Response Posted - 03/06/2012 : 20:34:56

Are any of you familiar enough with AYBC standards to state that the above quote is an overly cautious interpretation of AYBC?

I agree that burying the rails is a severe worst-case scenario (especially since the rails are so high on a C250

), but some of these standards might be designed to protect against such extreme situations. I can't imagine a seacock on the bilge outlet - in fact, that would be a very dangerous scenario.

But I have had a few drops of water gurgle up into the sink on one occasion, so the sink drains are not that far above the waterline. But IIRC (haven't looked on the boat lately), access to those drains is a real problem which would make a seacock very difficult to operate.

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djbano
1st Mate

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67 Posts

Response Posted - 03/07/2012 : 12:24:07

Your boat would be sinking in order for water to enter the cabin through the sinks. Picturing the boat knocked down the sinks would still be higher than sea level. I do not know what the volume of the anchor locker is but it seems pretty shallow and shouldn't hold enough water to affect the safety of the vessel.

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The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.