Large area hull deformation - Is this concerning?

Loops

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Jul 23, 2026
1
Catalina 22 Boomaroo Sydney
Hello all I have just purchased a C22 with a swing keel on a trailer. As far as I'm aware it has been on a trailer for a very long time and I need some help identifying the cause and risk of this hull deformation.

It is an area roughly 600x600mm wide, most predominant on the starboard side with most of the area being forward of the seacock.

Looking and tapping on both the inside and outside of the hull it the sound is the same, very dry thud, no squishy or flex whatsoever when pressed, and it seems there is even a rib/oem reinforcement running from the centerline to the aforementioned area.

I don't personally feel it is a sail-ending thing as there is NO cracking anywhere on the hull and the entire structure feels rock solid.

I'm just hoping for some experienced/knowledgeable shipwrights or surveyors opinions to ease my mind as I can't put this on the water without a little more peace of mind.

Thank you all for your time
 

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May 1, 2011
5,475
Pearson 37 Lusby MD
I believe you have a case of "canning" from being on the trailer for such a long time. My understanding is that it usually corrects itself once back in the water.

Welcome to the forum! :beer:
 
Sep 24, 2018
4,529
Catalina 30 MKIII Chicago
98% of the time the hull will return to normal if left in the water or on a trailer with proper bunks. There isn't much more to say that hasn't already been said. Go sailing and have some fun!