A Boat starts with 200 health, represented by the icon . It takes damage by colliding with certain objects in the water such as Sea Stacks or Salt Formations, coasts, or the border of the world. Taking damage can create a leak in the boat that does constant damage (up to -1 /s per leak) until a Boat Patch is used on the leak. Boats can be repaired by using wood material. Boards repair 25 , Living Log repairs 18.75 , Twigs repair 13 , and Logs and Driftwood Piece repair 6.25 .
When reaches 0 the boat sinks. It leaves 4 Boards and half of the materials used to create all the structures on the boat. All Players drown and reappear on the nearest coast. They lose 25% of their max health, -25 Hunger, -25 Sanity, gain 100% Wetness and drop half of their inventory slots into the water. WX-78 loses 40% of its max health and -50 sanity. Woodie loses -50 hunger in normal form and -100 Beaverness in Werebeaver form. Each Boat has one plank, which can be used to abandon ship with the same effects as drowning.
Being made of wood, the boat itself is flammable and can catch fire (either from placing an open campfire on it, or having the fire spread to other onboard flammable items), causing heavy damage to the boat depending on how many current segments are currently in flames. (there are 5 segments total, the center, and 4 on each side.) Contained fires, such as a Firepit or Scaled Furnace can be safely placed and used on the boat.
A lowered Mast increases the maximum velocity of a Boat by 1.5 and a raised Winged Sail increases the speed by 3. Each other successive mast is 70% less effective than the previous (Winged Sail effects apply first). The final maximum speed is bounded between 1 (without mast) and 5. The following table gives some examples: