Laruaville 5

A couple of ghosts, feeling the call of the sea, decided to go on adventure. Unfortunately, a violent storm tore their ship apart and sunk it. Luckily, nobody got hurt, but they were cast ashore on an uninhabited island. The mainland is within visible distance, but how will they get back? Can they build a new ship? Building ships is not an easy task; it requires a lot of materials, knowledge and energy... Will you be able to help them out in such a hard task?