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Senior Citizen
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Discussion Starter #1 (Edited)
When my 1977 24 was pulled last fall and set on the trailer I noticed a hairline crack at the hull/keel joint. The boat is slightly crooked on the trailer which seems to me may have put additional pressure on the keel. I don't know if the crack opened in the water or after it was set on the trailer. The keel was fair last spring.

1. What should I use to fill the crack before applying bottom paint?
2. Something flexible or hard?
3. Should I open it up (form a v-groove) before fairing?
4. Should I torque the keel bolts on the trailer or in the water?
I'd guess the crack could open again if I wait to torque in the water.
-CH
I have learned that keel bolts should be torqued on the hard.
Edit 6/21
Torqued keel bolts
Filled hairline crack at keel/hull joint with 5200
Rolled on VC 17m
I'll see how it looks in the fall.
-CH
Edit 11/2013
Haulout was 10/30.
Small crack at the aft end of the hull/keel joint.
Some of the VC-17 appeared wrinkled over the starboard side of the joint after pressure washing.
Apparently one of the PO's used silicone to seal the crack.
Next spring I'll scrape silicone torque keel bolts and apply 4200. (recommended by yard guys)
-CH
Edit 4/2016
More wrinkles under VC-17 at haulout, but less than last year.
Separation between hull and keel is minimal this spring.
Will clean out more silicone caulk and apply 4200.
I torque keel bolts each spring.
-CH
 

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Hello Chas -- I have the same condition on my Mirage 27'. If possible, please share the resolution to the issue you describe on this post.
Best,
Oliver
 

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One of None
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8,040 Posts
Boats that old really really need keel bolt and keel stub inspection meaning.. drop the keel. UNLESS you are very lucky and they can be removed inspected one at a time while in the boat. (not reccomended)
 

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Discussion Starter #4
Hello Chas -- I have the same condition on my Mirage 27'. If possible, please share the resolution to the issue you describe on this post.
Best,
Oliver
Oliver -
I was pleased to see that the crack was not as big last fall at haulout as it was the year before. I haven't torqued the keelbolts yet this spring as I have been concentrating on rebedding deck hardware, stanchion bases, etc. Launch on April 13 was cancelled due to decision to work on the hard instead of in the slip. (I had hoped I could do some sailing in April.) WI weather has not been cooperative either. My plan is to clean out the silicone caulk, fill the crack with 4200 and touch up with VC-17. I won't get back to work on my boat untill May. I have a 60 foot catamaran tour boat to buff topsides and polish before May 10.
denise030 may have the idea to get the job done right. I can only imagine the expense of having the yard drop a keel and rebed.
-CH
 

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Discussion Starter #5
Haulout 10/19/2016
A few wrinkles under VC-17 at haulout. Need to remove more silicone.
Any additional filling needed will be done with 4200.
No additional hull/keel separation. :grin
- CH
 

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Tartan 27' owner
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5,241 Posts
Without inspecting the hull/keel joint as Denise says you could still try to "blindly" tighten the keel bolts, if you can. It is pretty expensive to do "the right thing" here.

Mostly, stick to your plan and go sailing.

;-)
 

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Discussion Starter #7
I torque SS keel bolts (80 foot pounds) each spring before launch. They were not loose last spring.
- CH
 

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Tartan 27' owner
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5,241 Posts
Well Chas you are not the only boat owner to deal with the occasional "smile" that can appear at the hull/keel joint. There is a thing known as the "Catalina smile" which is what you describe but on Catalina boats, of which there are quite a few. Catalina is not the sole owner of the "smile" either as many other brands can suffer from the same maintenance issue.

At least you are checking the keel bolts which counts for a lot.
 

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One of None
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Yup, they ask questions and give they're own answers. Then become smart a$$es.
 

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Discussion Starter #12
Well, if the gap continued to get worse even after torquing the keel bolts and a season of sailing I would certainly take a deeper look. The gap has not increased (it is just a hairline crack) and I have learned a few things about the issue in the past few years. I am comfortable with my current maintenance plan.

One thing I wish I had done while it was still hanging from the travelift at haulout is inspect the keel.
- CH
 

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Discussion Starter #13
We sailed hard this season in some rough seas.
No cracks at hull/keel joint at haulout! I was pleasantly surprised.
I need to sand the joint next spring as VC-17 did not adhere to residual sillycone.
-CH
 
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