Looks like potentially three issues going on. 1) Cracked and separating bulkhead 2) Longitudinal stringer (black) separating from the hull. 3) Longitudinal crack about 1/3 up from the bottom of the hull.
Possibly something impacted the side of the hull, over-flexing it, and causing the damage.
All of this looks repairable with epoxy resin and some biaxial fiberglass cloth, especially considering you have internal access to the hull.
But it seems like something that would best be done before sailing again, since you don’t want the sidewall of the hull to collapse.
sm
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