Repairing gelcoat at the entrance

Slavko Despotovic

I have a lot of broken small parts of finish on the area near to entrance of the boat. It was there when I bough Bonne Anse. As I am not an expert in this kind of work I need some advice how to do it, or maybe I should take her in to Amel service center for repairs. I have attached photos.
SM 2000
#279 Bonne Anse in Umag, Croatia