Join Date: Jan 2003
Location: Maine Coast
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Originally Posted by maxmunger
Firsy of all, go to www.catalina30.com
to learn all about the C30. And Join the association too!
Specifically, no the hull is not cored at all. Most all Catalinas are all solid glass.
Bolts do not stretch!
The "smile" is almost always due to improper blocking while ashore. The keel bottom actually tapers downward from front to rear and has quite a "rake" to it. Blocking must be as far forward as possible and a "nose" stand is desirable. However, the weight of the boat should never be on the stands.
The smile can occur either in front or back and is simply cosmetic. The overlaid glass and filler covering the joint can be broken by excessive flexing of the hull (accident or blocking). Most owners recover the joint when ad if it appears.
Only the worst cases of grounding the keel would result in movement of the bolts causing any leaks.
With all due respect improper blocking is not always the case. All Catalina 30's through 1987 had plywood laminated into the keel stub to save $$$, time and the expense of making the keel stub a solid block of fiberglass like it should be. Catalina was not the only manufacturer to cut corners like this Pearson and many, many others did this too. The problem is that when the plywood gets wet it begins to flex and separate from the two skins. The keel bolt washers also sink into bilge as the plywood rots giving the false sense that the bolts are stretching. The bolts are not stretching but the keel stub is compressing and giving you the Catalina smile.
I have been on the receiving end of the yard bill to remove the plywood and re-laminate the keel stub per Catalina's instructions. It's not a cheap job and involves removal of the motor on the 30. I will never ever buy a boat with plywood in the keel stub again! This was a very frugal and short sided attempt to save money but cost owners big time. My plywood was so rotted and keel bolts so corroded, from crevice corrosion, my boat yard was surprised I had not lost my keel! I'm sure I may have had I hit something.
Sorry but I have to disagree that the Catalina smile is a non issue because I've seen how thick the outer and inner skins are once the plywood was removed. Call Catalina they will send you the instructions on how to remove the plywood and the lamination schedule for rebuilding the keel stub!!
-Maine Sail / CS-36T
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Last edited by Maine Sail; 02-19-2008 at 01:07 PM.