Desperate leaking
- Thread starter Halvern
- Start date
Go to the forum on your phone and start a post in this thread. Click the little image icon just above the text box. Click where it says to “drop an image or click here”. Choose your photo library and you should be able to select the pictures to upload. At least that’s how it works on iPhone. Android is probably pretty similar.
He said he has other pics. I can’t see this kind of damage due to rig tension. My guess is the boat was dropped
jssailem
SBO Weather and Forecasting Forum Jim & John
- Oct 22, 2014
- 23,342
It does not look to me like a stress crack, more like dragged across or along underwater rocks like a jetty.
Where on the boat bottom is this?
the crack is linear. Perhaps the boat came down hard. But I would expect the damage to be on and near the keel.
Perhaps the boat was on her side as in a grounding and the hull was folded by wave action. The linear shape is interesting.
Tension of shrouds does not feel likely. You would see damage in the areas of the chain plates more likely than on the hull.
This damage would concern me as not just surface but possible structural. I’d be inspecting the interior. You may need to add ways (bulkhead/brace/beam) to strengthen the interior in the area.
Some hulls lack stiffness and flex or oil can. This action, if excessive, can crack the hull. Usually the cure is to design frames to stiffen the hull.
This may be much more than a couple of fiberglass patches.
Pictures further back to show more of the hull. A professional survey of the damage is with in reason.
Where on the boat bottom is this?
the crack is linear. Perhaps the boat came down hard. But I would expect the damage to be on and near the keel.
Perhaps the boat was on her side as in a grounding and the hull was folded by wave action. The linear shape is interesting.
Tension of shrouds does not feel likely. You would see damage in the areas of the chain plates more likely than on the hull.
This damage would concern me as not just surface but possible structural. I’d be inspecting the interior. You may need to add ways (bulkhead/brace/beam) to strengthen the interior in the area.
Some hulls lack stiffness and flex or oil can. This action, if excessive, can crack the hull. Usually the cure is to design frames to stiffen the hull.
This may be much more than a couple of fiberglass patches.
Pictures further back to show more of the hull. A professional survey of the damage is with in reason.
I'm going with that, too. We may never know.
OP needs an insurance appraiser and a good marine surveyor to make a determination. Then the fun begins with the boat yard....
Just guessing ....
It looks like the connection between his encapsulated keel and Fiberglass Hull.
It maybe age of boat related.
If it was a compression crack from Rigging Tension, why not both sides?
Jim...
It looks like the connection between his encapsulated keel and Fiberglass Hull.
It maybe age of boat related.
If it was a compression crack from Rigging Tension, why not both sides?
Jim...
Why would it have to crack on both sides? Once one side cracks a lot of the tension is released.
Gentlemen, crack within half an inch is dead center. I spoke with Chief Rigger @ KKMI in Richmond CA. Back in ‘07 they had boat in to have the six chai plates removed and inspected for rot and re-beaded. He stated that shrouds were removed and replaced without any change being made to tension (?). I’m not an engineer but logic says you have to relieve the tension before you can remove the turnbuckle and shroud.
It is what it is, now to figure how to fix it, take off tension first?
It is what it is, now to figure how to fix it, take off tension first?
In the picture Mark loaded for me, to the right of the tape you can see the beginning of the leading edge of the keel. The center of the mast is about six inches to the left of the right tape.. according to previous owner the was slight damage to bow from striking pier about 12” above waterline. Looks about 6” in dia.
jssailem
SBO Weather and Forecasting Forum Jim & John
- Oct 22, 2014
- 23,342
I’d love to help you, but I don’t have enough info.
I shared suspicion, but they are just logical guesses based on the damaged boats I have seen. When you are on the boat looking at all the areas both inside and out it is possible to understand the extent of the damage and develop a strategy. I was onsite when the marina rolled a 40 ft sailboat boat upside down to repair the keel and strengthen the hull.
When you say the keel is unaffected but there it a several foot crack behind the keel that is an anomaly in my experience.
I’ll be following your project. It looks to be challenging.
I shared suspicion, but they are just logical guesses based on the damaged boats I have seen. When you are on the boat looking at all the areas both inside and out it is possible to understand the extent of the damage and develop a strategy. I was onsite when the marina rolled a 40 ft sailboat boat upside down to repair the keel and strengthen the hull.
When you say the keel is unaffected but there it a several foot crack behind the keel that is an anomaly in my experience.
I’ll be following your project. It looks to be challenging.
If by “removed and replaced the shrouds” he means removed and reinstalled the same shrouds, then my assumption would be that they counted turnbuckle threads when removing, and restored the same settings when reinstalling. If they actually replaced the wire with new then they best they could’ve done is estimated the tension beforehand and tried to reset to the same when tuning the new shrouds.
That does not look like a crack in a place from overtightened shrouds to me either. To crack the exterior of the hull there would take a lot more flex than I think you could get with the shrouds, at least before something else broke first. Pushing up hard on the keel, like you might get with bouncing, seems possible. I don’t see any scrape marks so I’m guessing not a direct impact to that spot.
to upload a photo, click on the "attach files" that is below the emoji's and select the jpg file.
I seriously think you need a reputable marine professional to look at it and repair it. No offense meant to anybody here but asking people on a sailing forum what to do about damage like that is, in my opinion, a form of Russian Roulette. No one can see the extent of the damage from a couple of photos.
Feankly, I think Russian Roulette is more predictable. This has to be looked at at the boat from both inside and outside and a thorough exam needs to be performed. This one cannot be properly diagnosed through photos here.
dj
Also....
Who in the world knows what has happened in the last 15 years since the work was completed.
Who in the world knows what has happened in the last 15 years since the work was completed.
How long have you owned this boat? You mentioned the previous owner a couple of times. If you did not cause this damage then it was likely inherited from the PO. Damage as egregious as this would not occur unnoticed. If you recently acquired the boat, did you get a survey? You may have some recourse from the previous owner or the surveyor.