Don't forget it's not just the welds on the outside, but also the welds on all decks and walls on the inside. The resilience of modern vessels mainly comes from

Don't forget it's not just the welds on the outside, but also the welds on all decks and walls on the inside. The resilience of modern vessels mainly comes from the internal structure rather than the hull. The hull is just the skin and needs to be strong enough to withstand the impact of water and tugboats etc but it's not responsible for holding the ship together.