Minecraft wiki entry for Island_survival, associated text: If you are playing in Minecraft after Update Aquatic, there is a chance that you might find a shipwreck or buried treasure chest near or on the island you are on. If this happens, you can consider yourself quite lucky indeed as a shipwreck effectively solves all of the above three points (Crafting, Food and Shelter): the hull can be broken up and dismantled for wood, the ship often contains chests that oftentimes have food in them and the ship itself can be converted into an impromptu improvised house for surviving the initial nights. The shipwreck is also likely to contain a map that shows the path to a Buried Treasure Chest.