Cracking paint where keel meets hull

[TheMadchef]

I have an '87 mirage 29 that I bought last season and the paint in the area where the keel is attatched to the hull started flaking towards the end of the summer. The layers of paint are 1/4 to 1/2 inch thick, and the area of flaking is at least 10" by 2" on 2 parts of the joint. As I began to grind down the flaked area i noticed it had been repaired previously. I've filled it with epoxy and re- caulked the keel joint before painting with vc17.
Is this a common problem, have many others experienced this? I'm wondering if it's a normal problem or if perhaps there are other explanations...

[sailingdog]

If you've got 1/4" of paint, you have a problem. I'd guess that the 1/4-1/2" is fairing compound and paint.

When was the last time you inspected the keel bolts and the keel stub? If you haven't done that, it might be time to do so. On many older boats, the keel stub support had plywood glassed in, and if the plywood is rotting, then the keel can start to sag. This is called the Catalina smile on the older Catalina boats. This does need to be checked, as do the keel bolts, especially if they are original.