Someone who successfully ran an organization that successfully delivered 70 4,000-tonne ships is probably more qualified to be put in charge of building an airc

Someone who successfully ran an organization that successfully delivered 70 4,000-tonne ships is probably more qualified to be put in charge of building an aircraft carrier, than someone who delivered 70 4,000-lb boats. When it comes to material goods that dramatically vary in size (ships, planes, bombs), tonnage is usually a good first metric.