Your ship crashed off the coast of a small island. Apparently it is uninhabited, so there is nowhere to wait for help from. You have to rebuild the caravel in Regresso and you need to start immediately. Send people deep into the island to collect food, without regular food, the survivors will die. Then you can do the logging of wood, it will be needed to repair the ship. New features will gradually appear and appear on the bottom of the screen. When sending people to this or that job, remember that they are well-fed and rested. Finish building the caravel and you can return home.