Minecraft wiki entry for Boat, associated text: Master-level fisherman villagers always offer to buy a boat for an emerald. The type of boat depends on the biome outfit type of the villager; plains villagers offer to buy oak boats, taiga and snowy villagers offer to buy spruce boats, savanna villagers offer to buy acacia boats, desert and jungle villagers offer to buy jungle boats, and swamp villagers offer to buy dark oak boats.