hard to tell unless you zoom in and its dirty. but that bottom part is beat to crap
Yes itís hard to see the extent of the damage. From the factory this area would just be gelcoat. Looks like someone installed a keelguard like material. If so and itís beat up remove it repair any expose fiberglass and install a new keelguard.
Can't tell from the pic, but as stated, there is no 'protective' piece installed on the keel from the factory. beaching a boat will grind away gel coat. A keel guard can be installed to prevent such damage when beaching.