Yes, it right at the bottom bend where it goes from vertical to Horizontal. Why do you say no big deal if it needs to be carefully inspected? I would like to draw it back together, (i.e.original post), to repair / strengthen it. Checking for other less conspicuous damage is good advise.
Sorry, other things in between.
In the point / area where it goes from vertical to horizontal, there should not be much force. Many boatbuilders doesn't fasten the bulkhead in that area on purpose - the hull should be able to flex, around a corner it is easy to get point stress.
That is why the crack in itself is no big deal.
- it is probably difficult to draw it back again. As it is not coming back by itself, there is probably some stress in the area, from when the boat was built.
- do not make it stronger ... if you really want to do this, you have to be extremely careful. Making it stronger in one point would change the stress balance. What you have now may be an improvement from stress point of veiw.
The careful inspection should be in all places where the hull could have been distorted. Other ersponses have covered some of this. Sometimes one is suprices how a grounding has affected areas far from the point of impact.
Did I say one should inspect inside and outside? Remove some of the paint, aft of the keel and really inspect. As well as propellor shaft installation (when grounding, usually the engine moves around a bit - usually possible to see in spider cracks around the engine. )