Part#22 Survival Fountain of Youth: building the 3rd boat/ship 

Just a hint-if you eat, drink, and take medicine BEFORE you sleep each day, you can get most-if not all of your health back. 👍😊 Of course, obviously, only living water will get rid of the red part of health bar.

You can disassemble all of the boats you are no longer going to use and get those materials back.