This doesn't look good. It is a bit difficult to do an assessment by photos only and I am not familiar with how Beneteau builds its boats, so take that into account when considering my comments.
Several things jumped out.
First, the new fiberglass appears to be laid over the top of finished plywood and not over raw plywood. I would think this will lead to poor adhesion between the resin and the bulkhead. If this is the case, then it will be weaker than it should be.
Second, the cloth looks like it is mat and not glass fabric. Mat is mostly used to build up thickness and it is not particularly strong. It also tends to be resin rich which will make the finished glass brittle.
Third, if indeed the glass is mat the proper resin is polyester or vinyl ester not epoxy. Polyester does not have great adhesive properties so it may not have bonded well to the bulkhead. If it is epoxy on mat it is resin rich and brittle. Mat is held together with a styrene based glue, polyester resin will dissolve the glue and saturate the cloth. Epoxy resin will not easily saturate the mat and does not dissolve the glue which leads to a heavy brittle layup.
Fourth, the top of the rudder tube looks like it is only partially bonded to the plywood at the top.
Finally, the overall quality of the repair looks to be poor. It is just not a neat job which makes me suspect about the overall repair.
I would certainly not be confident taking this boat to Hawai'i until I had it inspected by someone on site who I trusted. That may be hard to do in Panama.
You may find this video and the second part valuable as you assess your options. The video deals with risk management and sailing. The hour spent watching these two videos will be an hour well spent.
