Hi, Is there a list of the sizes of through wholes on the C30? I am looking to buy wooden plugs for all the through wholes. Are they a different size on the inside of the bottom than on the outside of the bottom? I might need a diver to plug one whole while cleaning the bottom so I can replace a valve. I would also just like plugs incase.
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Gaspare
West Marine....
West Marine sells a package of wooden plugs of various sizes for this purpose. There are about 5 or 6 in the package and they range in diameter. I keep the package close to the thru holes near the motor compartment. Check it out, they should suite your needs.
West Marine sells a package of wooden plugs of various sizes for this purpose. There are about 5 or 6 in the package and they range in diameter. I keep the package close to the thru holes near the motor compartment. Check it out, they should suite your needs.
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Doug
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Steve-b
Through hull plugs
You may want to consider the cost of a diver to plug the fitting, standby while you do the job, compared to a lift out and stay in the slings while you do it. A point to bear in mind is that if the stub that is moulded into the hull shears, you are going to require a haul out in a hurry anyway. I replaced the original gate valves while hauled out. The engine sea water intake through hull fitting came off in my hand. Play on the safe side.
You may want to consider the cost of a diver to plug the fitting, standby while you do the job, compared to a lift out and stay in the slings while you do it. A point to bear in mind is that if the stub that is moulded into the hull shears, you are going to require a haul out in a hurry anyway. I replaced the original gate valves while hauled out. The engine sea water intake through hull fitting came off in my hand. Play on the safe side.
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Chip Willis
Diver put one plug in but
could not put one in the head direct out through hull hole. He said it was splined so the wood plug would not go in. I have definitely one bad valve, the one from the sink to the ocean that one is broken in the closed position. That one he was able to plug. The other one from the head to the ocean, the direct out put, he said it had ridges in it so the wood plug would not fit. He could come back and hold a plunger over it while I changed out the valve but what if something goes wrong? Does anyone know of a better way to plug the whole? This seems to be getting complicated. Should I consider a pull out just to fix two valves? If the sink valve breaks off when I try to get it off then it has a plug in it and or I could plug it from the inside if need be and then pull it out or whatever to fix it. I will try to replace that this Saturday afternoon. Then I will deal with the other one. But how can I plug the head one? -CW
could not put one in the head direct out through hull hole. He said it was splined so the wood plug would not go in. I have definitely one bad valve, the one from the sink to the ocean that one is broken in the closed position. That one he was able to plug. The other one from the head to the ocean, the direct out put, he said it had ridges in it so the wood plug would not fit. He could come back and hold a plunger over it while I changed out the valve but what if something goes wrong? Does anyone know of a better way to plug the whole? This seems to be getting complicated. Should I consider a pull out just to fix two valves? If the sink valve breaks off when I try to get it off then it has a plug in it and or I could plug it from the inside if need be and then pull it out or whatever to fix it. I will try to replace that this Saturday afternoon. Then I will deal with the other one. But how can I plug the head one? -CW
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Peter
Maybe a collision mat?
It would be kind of expensive just to change a thru hull valve, but you might think about getting a collision mat. I paid about $150 at WM a few years ago for one. It's a triangle of plastic about 6-7 ft on each side with nylon lines in each corner. It's supposed to allow you to slide it along the underside of the hull on the outside to cover a hole that may occur in the hull if you collide with something. (The traditional name is "fothering".) The pressure of the water on the plastic causes the mat to be partially sucked into the hole, plugging it (or at least dramatically reducing the inflow to a trickle). Might allow you time to replace the valve if you don't have to make a run to WM in the middle of the job. Then afterwards, you've got a valuable piece of emergency gear aboard. Even at $150 (or whatever they are now), it's cheaper than a haul. Good luck!
It would be kind of expensive just to change a thru hull valve, but you might think about getting a collision mat. I paid about $150 at WM a few years ago for one. It's a triangle of plastic about 6-7 ft on each side with nylon lines in each corner. It's supposed to allow you to slide it along the underside of the hull on the outside to cover a hole that may occur in the hull if you collide with something. (The traditional name is "fothering".) The pressure of the water on the plastic causes the mat to be partially sucked into the hole, plugging it (or at least dramatically reducing the inflow to a trickle). Might allow you time to replace the valve if you don't have to make a run to WM in the middle of the job. Then afterwards, you've got a valuable piece of emergency gear aboard. Even at $150 (or whatever they are now), it's cheaper than a haul. Good luck!
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Tom Soko
A piece of Plywood?
Chip, If you are only trying to hold back the ocean for a few minutes, I would think just about anything would do. How about a 6"x6" piece of plywood, with a bunch of silicone smeared on it in the shape an size of the thru-hull? The diver could easily hold that up to the thru hull while you change the valve on the inside of the boat. It would probably stick to the outside while you do your work, and then easily come off when work completed. A rag can get the remnants of the silicone off. Just a thought.
Chip, If you are only trying to hold back the ocean for a few minutes, I would think just about anything would do. How about a 6"x6" piece of plywood, with a bunch of silicone smeared on it in the shape an size of the thru-hull? The diver could easily hold that up to the thru hull while you change the valve on the inside of the boat. It would probably stick to the outside while you do your work, and then easily come off when work completed. A rag can get the remnants of the silicone off. Just a thought.
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Pat McCartin
Chip, on your way to the boat...
Stop at an auto parts store. they should have an expanding rupper plug you could use for awile. The draw back it shere are made with metal washers on both sides so corrosion might set in if left to long. I'd guess on 1.5" for the head output. Pat
Stop at an auto parts store. they should have an expanding rupper plug you could use for awile. The draw back it shere are made with metal washers on both sides so corrosion might set in if left to long. I'd guess on 1.5" for the head output. Pat
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Chip Willis
The diver if in the area might come
by for free so he said when he was cleaning the bottom and putting in the wooden plug for the sink through hole valve and hold a plunger over the wast through hole so I can change out the valve. It is not causing a problem however the surveyer (when I bought the boat) wrote that it was broken so my insurance company wants it fixed. I tried to fix the sink one today but bought two wrong size valves. I went back and bought two more smaller ones and will try again soon. It has a wooden plug in it. It just broke a week ago. The boat does not need to be hauled out or I would and then replace them all. I am going to try the diver and if that does not work out mabe then the canvas Idea. Thanks CW
by for free so he said when he was cleaning the bottom and putting in the wooden plug for the sink through hole valve and hold a plunger over the wast through hole so I can change out the valve. It is not causing a problem however the surveyer (when I bought the boat) wrote that it was broken so my insurance company wants it fixed. I tried to fix the sink one today but bought two wrong size valves. I went back and bought two more smaller ones and will try again soon. It has a wooden plug in it. It just broke a week ago. The boat does not need to be hauled out or I would and then replace them all. I am going to try the diver and if that does not work out mabe then the canvas Idea. Thanks CW
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