Hey - I’ve done this before - and before! I created new beam cleats out of ash and attached them with epoxy and a couple of screws. After curing, I removed the screws and added three 1/4” bolts to each cleat. I then added cosmetic fillets around the outside of each cleat. I also added a bigger fillet inside the cabin above each cleat at the hull/deck joint.

Glued and Screwed

Bolted

Inside Fillet