If you have not repaired this yet, I use Gorilla glue. it comes in several formulas, so read the label. One type will expand while curing. I do not use this type.I use the CA gel from Gorilla and the white waterproof glue .

Certainly contact the seller, it looks like it is a one piece moulding with the hull, a worry would be if it broke in transit it is a weak point and maybe you need to beef up that area.

When you contact seller, send photos of the packing as well as the damaged hull

Mark

I would contact the carriers and also so the seller, was it adequately packed? its not your fault its broken, its the seller or carrier at fault.