硬殼船（Encrusted Boat） is a Boat that can be crafted from the Nautical Tab in the Shipwrecked DLC. It requires 6 Boards, 3 Ropes and 4 Limestones to craft and an Alchemy Engine to prototype. It begins with 800 health, which will deplete over time as it is used or if damaged. It can be repaired with a Boat Repair Kit or by sailing close to a Sea Yard. In addition to being able to equip boat attachments, it allows the player an extra 2 slots of storage.
While moving, it loses durability at a rate of 1 per 5 seconds, lasting a total of 5 days.
- The Encrusted Boat was added to the Shipwrecked DLC more than a year after its official completion in the Home Sea Home update, after being tested in a beta branch for several months.