Core replacement?

It sure looks like it. It looks like they repaired the rear hull-deck joint as well. I’m curious how that went, because once you cut away the shape, it’s not easy to rebuild it without a mold. Perhaps they didn’t cut, but just baffled the gunwale part.

This is a photo of our boat - I’m not sure why Ron reposted it.
Yes, I’ve been replacing the core extensively on the deck and now the hull. I changed the layout at the transom as well - it was too cluttered. Mark, I rebuilt it without a mold and it’s looking good. Once it’s done I will post some pics. For now I’m focused on the core replacement in the hull.