I'd take the responses so far with a grain of
salt.
The damage visible around the missing port is indeed not such a big deal.
The damage from just forward of your left foot aft is more of a question. How far back does it go? Am I correct in assuming the rub rail is covering the actual hull to
deck joint?
If so the rub rail has to be removed to ascertain the extent of the damage.
It is repairable, but the
work to do the job correctly is likely to be a bit more involved than is evident in the picture.. In all probability adjoining sections of both the deck and hull will have to be ground out entirely and rebuilt and then pried apart, rebedded and refastened. To achieve the proper hull thickness/scarf ratio will probably require almost the entire vertical surface of the deck, and about 8 to 10 inches of hull.
Far from being the hardest job imaginable, but certainly not the easiest. Probably well worth the effort though...done properly complete structural integrity can be restored.