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post #51 of 83 Old 05-10-2012
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Re: Closing seacocks

I leave almost all my seacocks closed all the time unless I am actively using them, with the exception being the cockpit drains. Bilge pump drains are above the waterline (not at the waterline), and do not have seacocks.

Turn the engine on? open the seacock! Turn the engine off? close the seacock!

Need to use the head? open the seacock! Done flushing? close the seacock!

Washing the dishes? open the seacock! Putting clean dishes away? close the seacock!

One key is making the seacocks easily accessible. The second is to just make it a habit.

Peterson 34 GREYHAWK, West Boothbay Harbor, Maine

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post #52 of 83 Old 05-10-2012
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Re: Closing seacocks

One of our old boats SANK under her new ownership. They had replaced the head intake hose about 5 years after we sold it to them and then proceeded to leave the thru-hull open, actually all thru-hulls, all the time. This, after I specifically went over the in-depth modifications I had made to the boat, in terms of seacock access, to make CLOSING them a 45 second job....

The intake "barb" on the Raritan PH heads has NO BARBS. GREAT HEAD, STUPID, STUPID, STUPID DESIGN FLAW!!!!!!!!!!

The new owners used a typical CHEAP perforated hose clamp and only ONE fits well on that inlet barb due to it's short length. The hose HAD a nice non-perforated AWAB clamp on it but they clearly threw it away in favor of a crap quality "new one"....

We then had a Nor' Easter and it was decided during the insurance investigation that the wave action, and resulting hydraulic pressure, from the boat slamming down off waves, over many hours, forced the hose off the barb-less male adapter on the head. The 3/4" line then fell to the floor and began filling the boat.

When they re-floated her they found the open seacock and the hose with clamp still around it.

Insurance company initially tried to deny coverage due to only one hose clamp in use and the sea valve not sufficiently "secured". They fought it based on the fact that you can't effectively fit two clamps on that barb and that in the "static" position the head inlet was "technically" very slightly above the waterline. They argued "unforeseen circumstances" and the insurance company begrudgingly paid but later dropped them as a client.....

That taught me a good lesson that if your boat sinks, and the seacock was involved, the insurance company may try to deny coverage and they may actually be successful or at the least drop you. Stuff happens....

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-Maine Sail / CS-36T


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Last edited by Maine Sail; 05-10-2012 at 08:30 AM.
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post #53 of 83 Old 05-10-2012
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Re: Closing seacocks

I closed all primary seacocks only when I leave the sailboat for a few days or so. (Engine intake, head, sinks, etc..). I am not concern with the seacock as much as a hose or clamp. My bilge pumps wouldn't have chance.
Early last year the Marina moved our previous sailboat, Pearson 35 and never open the engine seacock, and burned up the impeller. They indicated that everyone in the slips leaves their engine intake seacocks open. They made me think that I was paranoid... but I still closed them.

Patrick

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Kinsale, Va
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post #54 of 83 Old 05-10-2012
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Re: Closing seacocks

Can anyone explain why the cockpit drains need to exit the boat below water line. Seems these could route either out the side of the hull or through the stern and exit just above the water line. That would eliminate two big seacocks. Maybe sailing they would be below water but at anchor/dock they would be above.
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post #55 of 83 Old 05-10-2012
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Re: Closing seacocks

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Originally Posted by casey1999 View Post
Can anyone explain why the cockpit drains need to exit the boat below water line. Seems these could route either out the side of the hull or through the stern and exit just above the water line. That would eliminate two big seacocks. Maybe sailing they would be below water but at anchor/dock they would be above.
Huh? Mine are above the waterline. Not much, but they are.

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post #56 of 83 Old 05-10-2012 Thread Starter
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Re: Closing seacocks

Quote:
Originally Posted by patrscoe View Post
I closed all primary seacocks only when I leave the sailboat for a few days or so. (Engine intake, head, sinks, etc..). I am not concern with the seacock as much as a hose or clamp. My bilge pumps wouldn't have chance.
Early last year the Marina moved our previous sailboat, Pearson 35 and never open the engine seacock, and burned up the impeller. They indicated that everyone in the slips leaves their engine intake seacocks open. They made me think that I was paranoid... but I still closed them.
Same story from my marina, which is why I decided to ask this question. Although, they've tried to claim that the unique approach is why they would be so aware of it. While I'm admittedly surprised by how many leave their seacocks open, it certainly isn't everyone here or at all statistically possible that is the case in either of our marinas.

What I've further considered since starting this whole analysis, is their story itself. I've begun thinking that I've only had them work on my engine exactly ONCE, while in the water, and that was a year earlier. Everything else has been done over winters on the hard.

Their story stinks. They ran my motor with the seacock closed. I'm becoming more and more convinced every day.


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post #57 of 83 Old 05-10-2012
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Re: Closing seacocks

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Huh? Mine are above the waterline. Not much, but they are.
I believe many cockpit drain seacocks are well below the waterline. Mine are and would like to route to above waterline.
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Re: Closing seacocks

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Can anyone explain why the cockpit drains need to exit the boat below water line.....
So they can make that gurgling noise as they are just exposed to a slight heel and make you believe you have an enormous hull breach. Keeps you awake.
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post #59 of 83 Old 05-10-2012
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Re: Closing seacocks

Quote:
Originally Posted by patrscoe View Post
I closed all primary seacocks only when I leave the sailboat for a few days or so. (Engine intake, head, sinks, etc..). I am not concern with the seacock as much as a hose or clamp. My bilge pumps wouldn't have chance.
Early last year the Marina moved our previous sailboat, Pearson 35 and never open the engine seacock, and burned up the impeller. They indicated that everyone in the slips leaves their engine intake seacocks open. They made me think that I was paranoid... but I still closed them.
My Marina, will not start engines on vessels unless they have been issued a work order to commission the engine. They gondolier boats to and from the slip otherwise. They are quite good at it.

I imagine that they've heard the, " It was working fine when I left it" line enough times that they have taken this approach.

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Morgan, NJ

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post #60 of 83 Old 05-10-2012
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Re: Closing seacocks

Quote:
Originally Posted by patrscoe View Post
I closed all primary seacocks only when I leave the sailboat for a few days or so. (Engine intake, head, sinks, etc..). I am not concern with the seacock as much as a hose or clamp. My bilge pumps wouldn't have chance.
Early last year the Marina moved our previous sailboat, Pearson 35 and never open the engine seacock, and burned up the impeller. They indicated that everyone in the slips leaves their engine intake seacocks open. They made me think that I was paranoid... but I still closed them.
I would have told them to go screw themselves. THat's insane. That may be the largest intake in your boat! If that blows, I seriously doubt any cmobination of bilge pumps would keep up.

The simple habit and rule (to tell you marina) is to put the kys to start the engine on the Thull for the engine intake. No excuses then. Seems to me the extra couple minutes to find and open the THULL is a lot cheaper and less involved than raising a sunken boat. Course, maybe they don't make as much money that way??

I have been in more marinas than I can count and I have never in my life had one tell me to keep my Thull open. Wow.

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