While you won't be able to obtain Chester in Don't Starve: Shipwrecked, you will be able to be accompanied by Packim Baggims, a fish-munching flying backpack. You can upgrade Packim Baggims by feeding it enough fish to increase its hunger level to over 120 and grant Packim Baggims three additional inventory slots. Packim Baggims can also be upgraded to Fire Packim Baggims by placing Obsidian in each inventory slot, turning him into a fire-belching defender and portable oven to cook food!