> The theory is that each dive reduced the integrity of the ship and eventually it would fail. Could be 10 or it could be 10,000 drops. It is already of high v

> The theory is that each dive reduced the integrity of the ship and eventually it would fail. Could be 10 or it could be 10,000 drops. It is already of high value to know whether the number is more like 10 or 10,000. > And that number would be different if you built a second ship. That is why you build the second ship either as similar as possible to the first one or in a way for which there exists evidence that it will have an improved integrity over the first.