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Old 30-03-2024, 03:16   #91
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Re: Thru hull counts

Lol, true that !

But my point was more along the lines of 40 years of boating, in and around multiple marinas, blah blah blah, and I have never seen a boat that sank because of a "failed" thru-hull.

I have seen extensive damage and a few near sinkings from clogged cockpit drains, leaking hatches, failed bilge pumps from dead batteries and such.

Hell, we had a fun experience ourselves when I forgot to put the transom drain plug back in my Bayliner cuddy. Left the boat ramp and got about 100 yards away before I realized the mistake. A quick return and got it back on the trailer faster than I ever had. But other than some wet carpet that turned out ok.

Again, not saying it doesn't happen. Just rare. Like "keel falling off" rare.

Is that better than the UFO ?

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Old 30-03-2024, 03:46   #92
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Re: Thru hull counts

Yes - the number of through hull openings can be reduced, through the use of Manifolds.

According to Groco:

Supply Manifolds:
Quote:
“We do not recommend the practice of supplying raw or filtered water to multiple “consumers” from a single inlet source (ie: toilets, wash-down pumps, air conditioners, generators, etc.) but we do recognize that it is common practice to do so, particularly when one or more of the consumers operates intermittently. GROCO's patented RWM Raw Water Manifold requires that you use the proper pipe or hose sizes, thus reducing the possibility of dangerous flow restrictions to consumers ...”
Drain Manifolds
Quote:
”To reduce the number of above waterline hull openings in your boat we offer a simple way to plumb multiple 1/2" or 3/4" ID low pressure lines (sinks and showers for example) to a single above waterline overboard drain fitting ...”
Supply Manifolds ➥ https://www.groco.net/products/fitti...water-manifold

Drain Manifolds ➥ https://www.groco.net/products/fittings/manifolds
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Old 30-03-2024, 04:50   #93
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Re: Thru hull counts

Quote:
Originally Posted by OldManMirage View Post
Lol, true that !

But my point was more along the lines of 40 years of boating, in and around multiple marinas, blah blah blah, and I have never seen a boat that sank because of a "failed" thru-hull.

I have seen extensive damage and a few near sinkings from clogged cockpit drains, leaking hatches, failed bilge pumps from dead batteries and such.

Hell, we had a fun experience ourselves when I forgot to put the transom drain plug back in my Bayliner cuddy. Left the boat ramp and got about 100 yards away before I realized the mistake. A quick return and got it back on the trailer faster than I ever had. But other than some wet carpet that turned out ok.

Again, not saying it doesn't happen. Just rare. Like "keel falling off" rare.

Is that better than the UFO ?

You are missing the point.

It’s not about thruhulls failing it’s about what you need to do to respond to an unknown source of water intrusion. I have been in the terrible positions of boarding a boat, sliding open the companionway, and finding the floorboards awash. Good news, it was at the dock, and it was not my boat (but in a fleet I was responsible for). More good news it was a Catalina 36, so quite a simple plumbing system. Even reaching underwater, I was able to close the seacocks.

The key here is every hose, every clamp, every piece of gear connected to any thruhull can fail, and in many cases you have no idea where that water is combing from.

If this happens offshore, you have two options, close all the seacocks, or launch the life raft. If you have 20 seacock to shut, your time will be better spent prepping for abandoning ship. On my boat, the two of us can isolate all the watertight compartments, and close all seacock in less than 3 minutes. I know this because it’s a drill we do.
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Old 30-03-2024, 04:51   #94
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Re: Thru hull counts

Quote:
Originally Posted by OldManMirage View Post
Lol, true that !

But my point was more along the lines of 40 years of boating, in and around multiple marinas, blah blah blah, and I have never seen a boat that sank because of a "failed" thru-hull.

I have seen extensive damage and a few near sinkings from clogged cockpit drains, leaking hatches, failed bilge pumps from dead batteries and such.

Hell, we had a fun experience ourselves when I forgot to put the transom drain plug back in my Bayliner cuddy. Left the boat ramp and got about 100 yards away before I realized the mistake. A quick return and got it back on the trailer faster than I ever had. But other than some wet carpet that turned out ok.

Again, not saying it doesn't happen. Just rare. Like "keel falling off" rare.

Is that better than the UFO ?

Better than UFO That aside if we presume "keel falling of" rare as 1/1 with a seacocks it still makes a huge difference if you have 20 thru hulls against 2.. Besides that the amount of maintenance/inspection is significant not to mention operating them when leaving the boat and returning as they (most of them anyways) should be closed during absense of crew..
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