Bulkhead issues

[Samoerai]

The collision bulkhead on my B34 from 1999 looks like it has seen too much water.
I suspect a leaking cleat, or maybe the anchor locker or maybe the hatch?

As I'm unable to remove the shells, how could I repair this?

[Happysailor]

Ok, First of all you will need to find the leak what caused the wateringress to start the degradation.

I would propose to remove all damaged and soft wood. See what is left, but by the looks of it not a lot and it must be smelly too.

I think the best option would be to make the bulkhead out of one piece and tilt it in place, position top and slide bottom into place. Due to triangle waffle sizing and shape this could work and could be the best option as it would be out of 1 piece to give the best strength. Laminate the sides to connect the bulkhead with the hull again.

If this cannot work you will need to make a split or make a less tight fit.
Make a new bulkhead in two parts, a PS and SB side part/ top and bottom part. Position them, laminate and close the seam bij doubling and screwing with a strip with sufficient overlap.
Last least elegant solution would be to build a webframe and laminate this to the hull, take sufficient thickness as next you will need to mount a complete bulkhead to it, with tolerances just enough to get it in, using sealant and screws to hold it. It needs to become really rigid so there will need to be sufficient screws and not only in the corners as it will need to take the strenght again..

I would first really try to make a new bulkhead out of 1 piece and get it in.

Any other thoughts?