An electric conversion for the BN-2 Islander was being developed for exactly this purpose; island-hopping around Scotland. It looks like they've switched to hyd

An electric conversion for the BN-2 Islander was being developed for exactly this purpose; island-hopping around Scotland. It looks like they've switched to hydrogen fuel cells now though - https://en.wikipedia.org/wiki/Project_Fresson https://en.wikipedia.org/wiki/Project_Fresson