Potter transom void
 

As I was removing the outdrive assembly I noticed a crack in the fiberglass at the edge of the keyhole. After removing the wood and started grinding I stuck a screwdriver in the crack to remove the bad glass and chased a void clear to the top and side of the boat.

Am I the only one?

It smelled like a blister does on the bottom of an in-water hull.

I had something just like that. It was almost half the transom. Then it looked like they tried pouring resin down the void to fill it up.

Ive seen smaller areas like that over the years but not one that large.


That's why I started sealing up the ply 100% prior to installing the core if using wood. Then I use Thickened epoxy to bond it to the old skin. I wouldn't do a new hull that way but the re-dos can get air trapped voids easily. It is important to lay the lower section in first and try to work the air out the top as it lays in. Also having enough resin/ resin soaked cloth there to fill the small voids.

Not in my transom, but, the coring in the port gunwale cap had a void that extended through about a third of it.