How did boats made of wood cross the oceans?

Question

Why didn’t the wood rot or eventually absorb water and allow water to enter the boat?

In: 9

Answer 1

The same way you make a barrell that holds wine. When wood gets wet it expands, so when you build a ship together with all the seams already tight, when the wood gets wet, it has no where to expand to except it’s neighboring piece of wood. that creates a dam effect. once all the joints are sealed, it will be waterproof.