Crack in Starboard Bulkhead Or Edge Joint?

Apr 6, 2013
166
Catalina 310 Annapolis
I was looking at the starboard forward bulkhead of my 2002 Catalina 310 yesterday and noticed what appears to be a hairline crack on the aft face of my starboard bulkhead. However, the crack, if that is what it is, doesn't carry through to the front of the bulkhead. It is positioned about halfway between the hull and the chainplate lower which is attached to the bulkhead to the left of the crack. I showed the attached photos to a friend and he wondered if, perhaps, it is not a crack but an edge joint. The port bulkhead does not have a visible separation like an edge joint. Does anyone have any knowledge of this or have you experienced something similar? If it is a crack, I am going to repair it with Gflex epoxy and a teak doubler. The wood is not wet at all and the chainplates all appear tight and leak proof.
 

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Sep 24, 2018
4,627
Catalina 30 MKIII Chicago
It's cheaper to do this bulkhead in two pieces rather than one 5'+ wide piece of wood. This definitely seems like something Catalina would do
 
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Jan 11, 2014
14,089
Sabre 362 113 Fair Haven, NY
Looks like 2 different pieces of wood. The grain patterns on either side of the crack don't match. If it was a failure crack the grain would match and the crack would not be as straight.

Look for a similar crack on the forward side of the bulkhead. If, as @Project_Mayhem suggests it is 2 pieces of plywood, the bulkhead may be 2 thinner pieces joined together to make a thicker panel. If that is the case it would make sense to offset the vertical joints in the glued up panel.
 
Jun 21, 2004
3,176
Beneteau 343 Slidell, LA
That’s two separate pieces; joint is straight as an arrow.. Doesn’t require any repair.
 
Jan 7, 2011
5,961
Oday 322 East Chicago, IN
I don’t think that is hairline crack, way too straight and too thick.

I wouldn’t worry about it.

Greg