The Captain Hat is a craftable Hat Item Nautical Tab item in the Shipwrecked DLC. It is found in the Nautical Tab, requires a Science Machine to prototype, and a Straw Hat, Bone Shards and Seaweed to craft. It lasts 2 days, and a Sewing Kit will restore it to full Durability.
When worn, it causes Boats to lose their durability at half rate while sailing. It has no effect on the durability loss when the Boat hits Waves or is attacked. It also has no effect when player character is not driving a boat. In addition to being crafted, it can also be found in Steamer Trunks, Blue Whales and X Marks the Spot treasure chests.
Due to being a relative cheap item to craft, it may be practical to use it instead of entirely relying on Boat Repair Kits or crafting new Boats, especially in long expeditions where the player is away from or lacks the time to gather necessary supplies.