Imagine your ship was wrecked and you were the only one who managed to remain alive. But now you are in the middle of the sea with only a small raft. Will you be able to survive? If you are strong and industrious, you will manage it. Craft a rod to get some fish and start collecting various items floating in the water. Thus, step by step, you will have resources for rebuilding your vehicle and making it more powerful. Then you can create various weapons to protect from sharks and other necessary items to speed up your trip. Good luck!