So police was just here to take a record of the robbery. When I got off the boat to meet the police at the harbor entrance, I suddenly noticed my IKEA shopping bag laying on deck. When I arrived back with the police it turns out this bag contains my iPad and the binoculars. So the robber dropped them just before he left the boat.
So now l only need to wind down from been woken up by a total stranger this morning in my cabin.