What was the purpose of copper sheating?

Copper sheathing was primarily used in shipbuilding to protect wooden hulls from marine organisms, such as barnacles and shipworm, which could damage the wood and affect a ship's performance. Additionally, copper has antifouling properties, helping to maintain speed and maneuverability. The sheathing also provided some corrosion resistance and durability, extending the lifespan of vessels. Overall, it contributed significantly to the efficiency and longevity of maritime vessels.